Updated on 2024/12/21

写真a

 
SAKAI, Motomu
 
Affiliation
Faculty of Science and Engineering, School of Advanced Science and Engineering
Job title
Assistant Professor(non-tenure-track)
Degree
Doctor of Engineering ( 2022.02 Waseda University )

Research Experience

  • 2023.04
    -
    Now

    Waseda University   Faculty of Science and Engineering, Department of Applied Chemistry

Committee Memberships

  • 2021.04
    -
    2024.04

    公益社団法人石油学会  石油学会誌”ペトロテック”編集委員

Professional Memberships

  • 　
    　
    　

    The Japan Society on Adsorption

  • 　
    　
    　

    THE JAPAN PETROLEUM INSTITUTE

  • 　
    　
    　

    THE SOCIETY OF CHEMICAL ENGINEERS, JAPAN

  • 　
    　
    　

    Japan Association of Zeolite

  • 　
    　
    　

    THE MEMBRANE SOCIETY OF JAPAN

Research Areas

  • Inorganic compounds and inorganic materials chemistry   zeolite

Research Interests

  • 吸着

  • Metal Organic Frameworks

  • Zeolite

  • Membrane separation

Awards

  • Young Scientist Award of The Membrane Society of Japan

    2023.04   The Membrane Society of Japan  

    Winner： Motomu SAKAI

  • Best poster award

    2021.07   Federation of European Zeolite Associations   Flow membrane reactor for the esterification of acetic acid using MOR-type zeolite membrane

    Winner： Motomu SAKAI

  • Encouragement Award

    2020.03  

    Winner： Motomu SAKAI

  • GSCポスター賞

    2013.03   公益社団法人 新化学技術推進協会   silicalite-1膜を用いたC6炭化水素蒸気透過分離

    Winner： 酒井 求

  • JXエネルギー優秀研究賞

    2013.03   JX日鉱日石エネルギー株式会社   ゼオライト膜を用いた炭化水素分離

    Winner： 酒井 求

 

Papers

  • Rejection of heavy metal ions in water by zeolite forward osmosis membrane

    Motomu Sakai, Eri Negishi, Masahiko Matsukata

    Separation and Purification Technology   357  2025.05  [Refereed]

    Authorship：Lead author, Corresponding author

    　View Summary

    Water treatment of heavy metals using zeolite membranes in forward osmosis was demonstrated. A continuous Na-ZSM-5, aluminosilicate zeolite, crystal layer was synthesized on the outer surface of a porous tubular α-alumina support and used as the forward osmosis membrane. The rejection performances and fouling resistances of Na-ZSM-5 membrane were studied. Na-ZSM-5 membrane exhibited a high rejection performance of 99 % for various metal species (As(III), As(V), Se(IV), Se(VI), Cr(VI)). This superior rejection performance was achieved by combining the molecular sieving effect and electrostatic repulsion between the anions and the anionic framework of the zeolite. Na-ZSM-5 membrane exhibited a stable water flux in the presence of model foulants such as sodium alginate, humic acid, bovine serum albumin, and silica particles, suggesting that the membrane had excellent antifouling properties against both organic and inorganic foulants.

    DOI

    Scopus

  • Recent Trends in Synthesis and Applications of Zeolite Membranes+1

    Motomu Sakai

    Materials Transactions   65 ( 10 ) 1218 - 1223  2024.10  [Refereed]

    Authorship：Lead author, Last author, Corresponding author

    　View Summary

    Zeolites have been used as a separation membrane material by taking advantages of their unique adsorption properties and molecular sieving properties based on the micropores. Zeolite membranes are widely used in practical applications, mainly for dehydration of organic solvents. Furthermore, the research and development continue toward large-scale implementation in the energy and carbon neutral field. The high heat and chemical resistance of zeolite membranes are also expected to be utilized as membrane reactors. Zeolite membrane and membrane separation will contribute to the fulfillment of a carbon-neutral society through energy saving in separation, reaction, and CO2 recovery. In this review, the basic structure, the synthesis methods and the applications of zeolite membranes are introduced. The recent research trends of zeolite membrane in the research and applications are also explained.

    DOI

    Scopus

  • Tailoring Nanochannel in ZSM-5 Membranes via Al Distribution Control

    Motomu Sakai, Saki Moriya, Rina Matsumoto, Takumi Kondo, Masahiko Matsukata

    ACS Applied Nano Materials    2024  [Refereed]

    Authorship：Lead author, Corresponding author

    　View Summary

    The effects of Al distribution on the permeation and separation properties of the ZSM-5 membranes were investigated. Two types of ZSM-5 membranes with different Al distributions were prepared via secondary growth methods using pentaerythritol (PET) or tetrapropylammonium cation (TPA+) as organic structure-directing agents. The results of 27Al-NMR and UV-vis-DRS suggested that the distribution of Al in ZSM-5 membranes can be largely controlled in the channels or intersections using PET or TPA+. Membrane properties were evaluated by conducting hydrocarbon vapor permeation tests in unary systems and a separation test for the methanol/H2 binary mixture. Significant differences were observed in the permeation behavior of the n-alkane hydrocarbons through the two Na-ZSM-5 membranes. The activation energies for the permeation of n-hexane through ZSM-5 membranes in which Al was mainly located in the channels and intersections were 46.8 and 18.7 kJ mol-1, respectively, indicating that Na+ in narrow pores would disturb n-hexane permeation. In addition, the separation performance for the methanol/H2 mixture considerably depended on the Al distribution. The separation factor was massively improved by the maldistribution of Al in the channels, possibly because methanol adsorbed on Na+ paired with Al in the channels blocked H2 permeation, resulting in high methanol selectivity.

    DOI

    Scopus

  • Transesterification of Methyl Acetate Using a Flow-Type Membrane Reactor with a Zeolite Membrane

    Motomu Sakai, Yuma Sekine, Masahiko Matsukata

    Industrial & Engineering Chemistry Research   62   12191 - 12198  2023.08  [Refereed]

    Authorship：Lead author, Corresponding author

    DOI

    Scopus

    2
    Citation
    (Scopus)

  • One-Pot Synthesis Method of MIL-96 Monolith and Its CO2 Adsorption Performance.

    Motomu Sakai, Hayata Hori, Takaya Matsumoto, Masahiko Matsukata

    ACS applied materials & interfaces   15 ( 18 ) 22395 - 22402  2023.05  [Refereed]  [International journal]

    Authorship：Lead author, Corresponding author

    　View Summary

    A novel preparation method was proposed for a metal-organic framework (MOF) monolith using a simple one-pot synthesis method. A MOF tubular monolith was successfully prepared by the hydrothermal treatment for an α-Al2O3 monolith in an aqueous solution of 1,3,5-benzenetricarboxylic acid and nitric acid without the addition of a metal source. The effects of temperature and the HNO3 concentration in the synthesis solution on the crystallization behavior of MIL-96 were studied. HNO3 enhanced the dissolution of the α-Al2O3 monolith and the growth of MIL-96. The growth rate of MIL-96 was also influenced by the synthesis temperature; a synthesis temperature of over 453 K was required for crystallization. The CO2 adsorption capacity of the prepared MIL-96 monoliths was evaluated and found to be comparable to that of the well-grown MIL-96 powdery crystal. Furthermore, the MIL-96 monoliths demonstrated good stability as their adsorption properties were retained even after 2 months of storage under atmospheric conditions.

    DOI PubMed

    Scopus

    5
    Citation
    (Scopus)

  • An Experimental Study of a Zeolite Membrane Reactor for Reverse Water Gas Shift

    Motomu Sakai, Kyoka Tanaka, Masahiko Matsukata

    Membranes    2022.12  [Refereed]

    Authorship：Lead author, Corresponding author

    DOI

    Scopus

    5
    Citation
    (Scopus)

  • Ultrapermeable 2D-channeled graphene-wrapped zeolite molecular sieving membranes for hydrogen separation

    Radovan Kukobat, Motomu Sakai, Hideki Tanaka, Hayato Otsuka, Fernando Vallejos-Burgos, Christian Lastoskie, Masahiko Matsukata, Yukichi Sasaki, Kaname Yoshida, Takuya Hayashi, Katsumi Kaneko

    Science Advances    2022.05  [Refereed]

    DOI

    Scopus

    28
    Citation
    (Scopus)

  • Alkaline-treatment with pore-filling agent for defect-healing of zeolite membrane

    Motomu Sakai, Hayata Hori, Masahiko Matsukata

    Microporous and Mesoporous Materials   336  2022.05  [Refereed]

    Authorship：Lead author, Corresponding author

    　View Summary

    Defects in silicalite-1 membrane is readily healed by an alkaline-treatment in aqueous solutions of NaOH and organic additives such as cetyltrimethylammonium bromide (CTAB) and tetramethylammonium bromide (TMABr). In this study, we investigated the role of organic additive in the course of alkaline-treatment. From the evaluation of weight and micropore volume of silicalite-1, it was shown that 3.6 and 3.1 molecules per unit cell of CTA+ and TMA+ entered the micropore of silicalite-1 during the treatment. CTA+ or TMA+ locating in the micropore inhibited the diffusion of NaOH into the micropore of zeolite and suppressed the dissolution from the inside of crystal. In contrast, the defect in silicalite-1 membrane was not healed by using an aqueous solution of NaOH and tetrabutylammonium bromide (TMABr), which was not able to enter the micropore of silicalite-1. We concluded that the use of organic additives, which can enter the micropore, was important for the defect-healing of siliclaite-1 membrane by the alkaline-treatment.

    DOI

    Scopus

    5
    Citation
    (Scopus)

  • Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part II, Diffusivity of C6 Hydrocarbon in Micropore.

    Motomu Sakai, Yukichi Sasaki, Takuya Kaneko, Masahiko Matsukata

    Membranes   11 ( 6 )  2021.05  [Refereed]  [International journal]

    Authorship：Lead author, Corresponding author

    　View Summary

    This study investigated the permeation behaviors of n-hexane and 2-methylpentane through two-types of silicalite-1 membranes that have different pore-connectivity. The permeation mechanisms of these hydrocarbons were able to be explained by the adsorption-diffusion model. In addition, the fluxes through silicalite-1 membranes could be expressed by the modified Fick's first law. The hydrocarbon fluxes through S-1S with better pore-connectivity were ca. 3-20 times larger than those through S-1M with poor pore-connectivity. For these membranes with different pore-connectivity, the activation energy of diffusion of n-hexane was 17.5 kJ mol-1 for the membrane with better pore-connectivity and 18.0 kJ mol-1 for the membrane with poorer pore-connectivity, whereas for 2-methylpentane it was 17.9 and 33.0 kJ mol-1, respectively. We concluded that the pore-connectivity in silicalite-1 membrane significantly influences the molecular diffusivities.

    DOI PubMed

    Scopus

    6
    Citation
    (Scopus)

  • Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part I, Pore Volume and Effective Pore Size.

    Motomu Sakai, Yukichi Sasaki, Takuya Kaneko, Masahiko Matsukata

    Membranes   11 ( 6 ) 399 - 399  2021.05  [Refereed]  [International journal]

    Authorship：Lead author, Corresponding author

    　View Summary

    The micropore volumes and effective pore sizes of two types of silicalite-1 membranes were compared with those of a typical silicalite-1 powder. The silicalite-1 membrane with fewer grain boundaries in the membrane layer showed similar micropore volume and effective pores size to those of the silicalite-1 powder. In contrast, when the silicalite-1 membrane contained many grain boundaries, relatively small micropore volume and effective pore size were observed, suggesting that narrowing and obstruction of the micropore would occur along grain boundaries due to the disconnection of the zeolite pore. The silicalite-1 membrane with fewer grain boundaries exhibited relatively high permeation properties for C6-C8 hydrocarbons. There was an over 50-fold difference in benzene permeance between these two types of membranes. We concluded that it is important to reduce grain boundaries and improve pore-connectivity to develop an effective preparation method for obtaining a highly permeable membrane.

    DOI PubMed

    Scopus

    9
    Citation
    (Scopus)

  • Self-defect-healing of silicalite-1 membrane in alkaline aqueous solution with surfactant

    Motomu Sakai, Hayata Hori, Masahiko Matsukata

    MATERIALS ADVANCES    2021.05  [Refereed]

    Authorship：Lead author, Corresponding author

    　View Summary

    Alkaline treatment with surfactant was applied to silicalite-1 membrane for defect healing. By immersion of silicalite-1 membrane into an aqueous solution of sodium hydroxide and cetyltrimethylammonium bromide (CTAB), defects among crystals were sealed, with amorphous silica leached from the membrane itself. During the treatment, the zeolite pores in the membrane were protected by CTAB from excess alkaline etching. As a result, the separation performance of silicalite-1 membrane was successfully improved by this post-treatment without a decrease in permeability due to the collaborative effect of NaOH and CTAB. The separation factor for n-hexane/2,3-dimethylbutane mixture increased from 86.5 to 559 after only a 15 min treatment. In addition, the separation performances of other zeolite membranes (Na-*BEA, Na-ZSM-5, and Na-MOR) were also improved by the treatment. This novel defect-healing technique breaks the trade-off line of permeation and separation performance observed with previous post-treatments.

    DOI

    Scopus

    5
    Citation
    (Scopus)

  • Olefin Recovery by *BEA‐Type Zeolite Membrane: Affinity‐Based Separation with Olefin−Ag + Interaction

    Motomu Sakai, Yuto Tsuzuki, Naoyuki Fujimaki, Masahiko Matsukata

    Chemistry – An Asian Journal    2021.03  [Refereed]

    Authorship：Lead author, Corresponding author

    DOI

    Scopus

    8
    Citation
    (Scopus)

  • Formation Process of Columnar Grown (101)-Oriented Silicalite-1 Membrane and Its Separation Property for Xylene Isomer

    Motomu Sakai, Takuya Kaneko, Yukichi Sasaki, Miyuki Sekigawa, Masahiko Matsukata

    Crystals   10 ( 10 ) 949 - 949  2020.10  [Refereed]

    Authorship：Lead author, Corresponding author

    　View Summary

    © 2020 by the authors. Licensee MDPI, Basel, Switzerland. Silicalite-1 membrane was prepared on an outer surface of a tubular α-alumina support by a secondary growth method. Changes of defect amount and crystallinity during secondary growth were carefully observed. The defect-less well-crystallized silicalite-1 membrane was obtained after 7-days crystallization at 373 K. The silicalite-1 membrane became (h0l)-orientation with increasing membrane thickness, possibly because the orientation was attributable to “evolutionally selection”. The (h0l)-oriented silicalite-1 membrane showed high p-xylene separation performance for a xylene isomer mixture (o-/m-/p-xylene = 0.4/0.4/0.4 kPa). The p-xylene permeance through the membrane was 6.52 × 10−8 mol m−2 s−1 Pa−1 with separation factors αp/o, αp/m of more than 100 at 373 K. As a result of microscopic analysis, it was suggested that a very thin part in the vicinity of surface played as effective separation layer and could contribute to high permeation performance.

    DOI

    Scopus

    13
    Citation
    (Scopus)

  • Preferential Adsorption of Propylene over Propane on a Ag-Exchanged X-Type Zeolite Membrane

    Motomu Sakai, Naoyuki Fujimaki, Yasuhito Sasaki, Noriyuki Yasuda, Masahiro Seshimo, Masahiko Matsukata

    ACS applied materials & interfaces   12 ( 21 ) 24086 - 24092  2020.05  [Refereed]

    Authorship：Lead author, Corresponding author

    　View Summary

    We investigated the adsorption properties of propylene and propane on an olefin-selective Ag-X membrane and discussed the contribution of adsorption selectivity to propylene/propane separation performance through this membrane. The isotherms of propylene and propane on Ag-X membranes were measured in unary systems at 313 K. The amount of propylene adsorbed on the Ag-X membrane at a lower pressure increased remarkably compared with that on the Na-X membrane. Such a change of adsorption property could induce excellent separation property for the Ag-X membrane. We compared the adsorption properties in a binary system calculated based on the Markham-Benton approach with the results of a permeation test. The molar fractions of propylene in the adsorbed phase in the binary system provided good agreement with propylene purity on the permeation side of the Ag-X membrane. These results clearly show that permeation selectivity of the Ag-X membrane for the propylene/propane mixture is mainly governed by adsorption selectivity.

    DOI PubMed

    Scopus

    20
    Citation
    (Scopus)

  • Formation process of *BEA-type zeolite membrane under OSDA-free conditions and its separation property

    Motomu Sakai, Naoyuki Fujimaki, Genki Kobayashi, Noriyuki Yasuda, Yoshikazu Oshima, Masahiro Seshimo, Masahiko Matsukata

    Microporous and Mesoporous Materials   284   360 - 365  2019.08  [Refereed]

    Authorship：Lead author, Corresponding author

    　View Summary

    © 2019 The Authors Tubular zeolite *BEA membrane was prepared by a hydrothermal secondary growth method in the absence of an organic structure directing agent (OSDA). Membrane formation process was carefully observed by using FE-SEM, XRD, and N2 adsorption, and the role of seed crystals on the support surface was discussed. Seed crystals loaded on the outer surface of a tubular porous alumina support partially dissolved and a small amount of seeds remained in an amorphous layer formed on the support surface in the early stage of secondary growth step. Subsequently, crystal growth of remaining crystals occurred, and a continuous *BEA layer was obtained following crystallization for 7 days at 393 K. In the secondary growth step, the supported seed layer played an important role in inducing the formation of a high local concentration in the vicinity of the support surface. The prepared OSDA-free *BEA membrane was then applied in the separation of hydrocarbons. We found that this membrane contained very few defects, and exhibited a high ideal selectivity for cyclohexane/1,3,5-trimethylbenzene mixture of 100, with cyclohexane permeance of 1.0 × 10−7 mol m−2 s−1 Pa−1 based on molecular sieving effect at 623 K.

    DOI

    Scopus

    16
    Citation
    (Scopus)

  • Olefin Selective Ag-Exchanged X-Type Zeolite Membrane for Propylene/Propane and Ethylene/Ethane Separation

    Motomu Sakai, Yasuhito Sasaki, Taisuke Tomono, Masahiro Seshimo, Masahiko Matsukata

    ACS Applied Materials and Interfaces   11 ( 4 ) 4145 - 4151  2019.01  [Refereed]

    Authorship：Lead author, Corresponding author

    　View Summary

    © 2019 American Chemical Society. Propylene/propane and ethylene/ethane separation was examined with Ag-exchanged X-type zeolite membrane (Ag-X membrane). The Na-X membrane was prepared on a porous tubular α-alumina support by a secondary growth method. The resulting Na-X membrane was ion-exchanged by using AgNO 3 aq. Olefin selectivities in both mixtures were markedly improved after the ion exchange from Na to Ag cation. The Ag-X membrane exhibited a maximum propylene selectivity of 55.4 with a permeance of 4.13 × 10 -8 mol m -2 s -1 Pa -1 at 353 K for a propylene/propane (50:50) mixture. This membrane also exhibited a maximum ethylene selectivity of 15.9 with a permeance of 9.04 × 10 -8 mol m -2 s -1 Pa -1 at 303 K for an ethylene/ethane (50:50) mixture. We consider that the strong interaction between olefin and Ag cation plays an important role for the appearance of such high selectivity of olefin.

    DOI PubMed

    Scopus

    72
    Citation
    (Scopus)

  • Hydrophilic ZSM-5 membrane for forward osmosis operation

    Sakai, M., Seshimo, M., Matsukata, M.

    Journal of Water Process Engineering   32  2019  [Refereed]

    Authorship：Lead author, Corresponding author

    DOI

    Scopus

    22
    Citation
    (Scopus)

  • Fouling-resistant Na-ZSM-5 zeolite membrane for fruit juice concentration in forward osmosis process

    Eri Negishi, Motomu Sakai, Masahiko Matsukata

    Applied Food Research   4 ( 2 )  2024.12  [Refereed]

    Authorship：Corresponding author

    　View Summary

    To evaluate the potential of Na-ZSM-5 membrane for liquid food concentration, the concentration of fruit juice by a tubular Na-ZSM-5 membrane was demonstrated in forward osmosis operation. Apple, orange, and pineapple juices were successfully concentrated, maintaining their quality without contamination by a draw solution based on a molecular sieving effect of the zeolite membrane. For example, the sugar content of apple juice increased from 10.7 to 17.1 oBrix after 24 h of dehydration. The fouling resistance of Na-ZSM-5 membrane was evaluated using a 10 g L-1 pectin solution and cellulose suspension. Na-ZSM-5 membrane showed stable dehydration performance for fruit juice concentration over 120 h without fouling due to pectin or cellulose. In addition, the membrane exhibited high heat resistance, with no deterioration up to 353 K. We showed that Na-ZSM-5 membrane is a potential material for fruit juice concentration because of its superior heat, acidity, and fouling resistances.

    DOI

    Scopus

  • One-pot synthesis of HKUST-1 monolith for CO<inf>2</inf> adsorption

    Motomu Sakai, Ayaka Ito, Takaya Matsumoto, Masahiko Matsukata

    Chemistry Letters   53 ( 6 )  2024.06

    Authorship：Lead author, Corresponding author

    　View Summary

    Shape-forming technology is essential for the widespread utilization of metal-organic frameworks. We developed a one-pot synthesis method for an HKUST-1 monolith. An HKUST-1 monolith was successfully prepared by the hydrothermal treatment of a Cu monolith in an aqueous solution of 1,3,5-benzenetricarboxylic acid, ethanol, and nitric acid without the addition of a metal source. The prepared HKUST-1 monolith showed CO2 adsorption properties comparable to those of commercially available HKUST-1 powdery crystals.

    DOI

    Scopus

  • Strategy of Development on Zeolite Membrane for Forward Osmosis Operation; Effects of Structural Parameter of Support Layer and Si/Al Ratio of ZSM-5 Layer on Water Flux

    Motomu Sakai, Yuta Nomura, Masahiko Matsukata

    Journal of Chemical Engineering of Japan   56 ( 1 )  2023.08  [Refereed]

    Authorship：Lead author, Corresponding author

    　View Summary

    The strategy of development on zeolite membrane for forward osmosis was investigated. Defect-less MFI membranes with almost the same thickness were successfully prepared on five kinds of a-Al(2)O(3 )tubular supports having different structural parameters. The water flux through these membranes could be expressed as a function of the structural parameter of support. Moreover, the effect of the Si/Al ratio in zeolite layer, which serves as an index of hydrophilicity, was examined. As a result, a membrane with a relatively hydrophilic character, having Si/Al ratio = 18.6, showed a higher water flux. Conversely, both water and salt hardly penetrated through a hydrophobic membrane (Si/Al = 8). Reducing the structural parameter in the support layer and improving the hydrophilicity of the active layer is crucial to achieving high water-permeability of zeolite FO membrane.

    DOI

    Scopus

    3
    Citation
    (Scopus)

  • Esterification of Acetic Acid by Flow-Type Membrane Reactor with AEI Zeolite Membrane

    Yuma Sekine, Motomu Sakai, Masahiko Matsukata

    Membranes    2023.01  [Refereed]

    Authorship：Corresponding author

    DOI

    Scopus

    5
    Citation
    (Scopus)

  • Heavy Metal Removal from Aqueous Solutions using Zeolite Forward Osmosis Membrane

    Eri Negishi, Motomu Sakai, Masahiko Matsukata

    膜   48 ( 2 ) 80 - 81  2023  [Refereed]

    J-GLOBAL

  • Impact of process configuration on energy consumption and membrane area in hybrid separation process using olefin-selective zeolite membrane

    Takehiro Yamaki, Motomu Sakai, Masahiko Matsukata, Susumu Tsutsuminai, Naoyuki Sakamoto, Nobuo Toratani, Sho Kataoka

    Separation and Purification Technology   294   121208 - 121208  2022.08  [Refereed]

    DOI

    Scopus

    6
    Citation
    (Scopus)

  • Apatite–Graphene Interface Channel-Aided Rapid and Selective H2 Permeation

    Radovan Kukobat, Motomu Sakai, Ayumi Furuse, Hayato Otsuka, Hideki Tanaka, Takuya Hayashi, Masahiko Matsukata, Katsumi Kaneko

    The Journal of Physical Chemistry C    2022.02  [Refereed]

    DOI

    Scopus

  • Synthesis of FAU-Zeolite Membrane by a Secondary Growth Method: Influence of Seeding on Membrane Growth and Its Performance in the Dehydration of Isopropyl Alcohol–Water Mixture

    Masahiko Matsukata, Yasushi Sekine, Eiichi Kikuchi, Motomu Sakai, Bharathi Subramanian, Makoto Toyoda, Taisuke Furuhata

    ACS Omega   6 ( 14 ) 9834 - 9842  2021.03  [Refereed]

    　View Summary

    Y-type zeolite membranes were prepared on a porous tubular α-alumina support by a secondary growth process. Various experimental conditions such as seed size, pH of seed solution, and degassing of support were examined for understanding their influence on the membrane deposition process. The experimental results showed that the potential of alumina support surface and the USY seed slurry plays a significant role in controlling the electrostatic interaction between seed particles and support surface and also the aggregation of USY seed particles in the slurry. In addition, we also noted the significance of the capillary forces working at the three-phase interface on the support surface and is a key factor that governs the seeding behavior onto the tubular support surface. Optimization of these parameters resulted in crack-free compact membranes that were able to effectively separate a mixture of isopropyl alcohol and water in a vapor-phase separation process.

    DOI

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    5
    Citation
    (Scopus)

  • Adsorption separation of heavier isotope gases in subnanometer carbon pores

    Sanjeev Kumar Ujjain, Abhishek Bagusetty, Yuki Matsuda, Hideki Tanaka, Preety Ahuja, Carla de Tomas, Motomu Sakai, Fernando Vallejos-Burgos, Ryusuke Futamura, Irene Suarez-Martinez, Masahiko Matsukata, Akio Kodama, Giovanni Garberoglio, Yury Gogotsi, J. Karl Johnson, Katsumi Kaneko

    Nature Communications   12 ( 1 )  2020.12  [Refereed]

    　View Summary

    <title>Abstract</title>Isotopes of heavier gases including carbon (13C/14C), nitrogen (13N), and oxygen (18O) are highly important because they can be substituted for naturally occurring atoms without significantly perturbing the biochemical properties of the radiolabelled parent molecules. These labelled molecules are employed in clinical radiopharmaceuticals, in studies of brain disease and as imaging probes for advanced medical imaging techniques such as positron-emission tomography (PET). Established distillation-based isotope gas separation methods have a separation factor (<italic>S</italic>) below 1.05 and incur very high operating costs due to high energy consumption and long processing times, highlighting the need for new separation technologies. Here, we show a rapid and highly selective adsorption-based separation of 18O2 from 16O2 with <italic>S</italic> above 60 using nanoporous adsorbents operating near the boiling point of methane (112 K), which is accessible through cryogenic liquefied-natural-gas technology. A collective-nuclear-quantum effect difference between the ordered 18O2 and 16O2 molecular assemblies confined in subnanometer pores can explain the observed equilibrium separation and is applicable to other isotopic gases.

    DOI

    Scopus

    25
    Citation
    (Scopus)

  • Organic structure-directing agent-free synthesis for *Bea-type zeolite membrane

    Motomu Sakai, Noriyuki Yasuda, Yuto Tsuzuki, Masahiko Matsukata

    Journal of Visualized Experiments   2020 ( 156 )  2020.02  [Refereed]

    Authorship：Lead author, Corresponding author

    　View Summary

    © 2020 Journal of Visualized Experiments. Membrane separation has drawn attention as a novel-energy saving separation process. Zeolite membranes have great potential for hydrocarbon separation in petroleum and petrochemical fields because of their high thermal, chemical, and mechanical strength. A *BEA-type zeolite is an interesting membrane material because of its large pore size and wide Si/Al range. This manuscript presents a protocol for *BEA membrane preparation by a secondary growth method that does not use an organic structure-directing agent (OSDA). The preparation protocol consists of four steps: pretreatment of support, seed preparation, dip-coating, and membrane crystallization. First, the *BEA seed crystal is prepared by conventional hydrothermal synthesis using OSDA. The synthesized seed crystal is loaded on the outer surface of a 3 cm long tubular α-Al2O3 support by a dip-coating method. The loaded seed layer is prepared with the secondary growth method using a hydrothermal treatment at 393 K for 7 days without using OSDA. A *BEA membrane having very few defects is successfully obtained. The seed preparation and dip-coating steps strongly affect the membrane quality.

    DOI PubMed

    Scopus

    1
    Citation
    (Scopus)

  • Unique enhanced catalytic performance of PtFe/zeolite

    Matsukata Masahiko, Ushiki Ryosuke, Sakai Motomu

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   257  2019.03  [Refereed]

  • CO2 coversion to MeOH with membrane reactor using zeolite membrane

    Matsukata Masahiko, Yoshida Daiki, Sakai Motomu, Seshimo Masahiro

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   256  2018.08  [Refereed]

  • Strong adsorption of propylene helps propane/propylene separation through Ag plus -exchanged X-type zeolite membrane

    Sakai Motomu, Sasaki Yasuhito, Matsukata Masahiko

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   255  2018.03  [Refereed]

    Authorship：Lead author

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Books and Other Publications

  • 水処理分離膜の開発最前線

    酒井求, 松方正彦( Part： Contributor, 3章-5 親水性ゼオライト膜によるアルコールや有機酸からの脱水)

    株式会社シーエムシー出版  2020.12

  • 化学工業第71巻第3号

    酒井求, 松方正彦( Part： Contributor, ホージャサイト型ゼオライト膜によるオレフィンの分離精製)

    株式会社化学工業社  2020.03

  • 2020年版薄膜作製応用ハンドブック

    松方正彦, 酒井求( Part： Contributor, 6章8節ゼオライト分離膜)

    株式会社エヌティーエス  2020.02

  • Research Outreach

    Motomu Sakai, Masahiko Matsukata( Part： Contributor, Zeolite membranes for chemical separation)

    Research Outreach  2019.12

  • 化学工学83巻12号

    松方正彦, 酒井求( Part： Contributor, ゼオライト分離膜を用いた新規分離技術の開拓)

    公益社団法人化学工学会  2019.12

  • セラミックデータブック 2019

    酒井求, 松方正彦( Part： Contributor, 超空間制御に基づく高度な特性を有する革新的機能素材の創製－ゼオライト系分離膜開発)

    株式会社テクノプラザ  2019.12

  • 先進無機高分子材料の開発

    酒井 求( Part： Contributor, 2章-2 無機膜による炭化水素分離)

    シーエムシー出版  2016

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Presentations

  • ゼオライト膜を用いた膜反応器開発とその課題

    酒井 求  [Invited]

    第18回反好会講演会 

    Presentation date： 2019.03

  • 親和性の違いに基づくゼオライト膜による炭化水素分離

    酒井 求  [Invited]

    化学工学会第83年会 

    Presentation date： 2018.03

  • エチレン・プロピレン分離用ゼオライト膜の開発

    酒井 求  [Invited]

    化学工学会第82年会 

    Presentation date： 2017.03

Research Projects

  • 水蒸気分離膜を用いた低温逆水性ガスシフト膜反応器

    日本学術振興会  科学研究費助成事業

    Project Year :

    2024.04
    -
    2027.03
     

    酒井 求

  • Development of inorganic porous membrane contributing to energy saving in food dehydration process

    Urakami Foundation for Food and Food Culture Promotion 

    Project Year :

    2024.01
    -
    2024.12
     

  • Food dehydration by zeolite forward osmotic membrane

    Mishima Kaiun Memorial Foundation 

    Project Year :

    2023.07
    -
    2024.06
     

  • Development on zeolite membrane with precise control of the location of cation

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Project Year :

    2022.04
    -
    2024.03
     

Misc

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Industrial Property Rights

  • 炭化水素製造装置および炭化水素製造方法

    松本 隆也, 朝野 剛, 杉浦 行寛, 松方 正彦, 酒井 求, 千原 直人

    Patent

    J-GLOBAL

  • 複合体、二酸化炭素捕捉剤、及び複合体の製造方法

    松本 隆也, 朝野 剛, 酒井 求, 松方 正彦, 堀 隼太, 伊藤 綾香

    Patent

    J-GLOBAL

  • 複合体、二酸化炭素捕捉剤、及び複合体の製造方法

    松本 隆也, 朝野 剛, 酒井 求, 松方 正彦, 堀 隼太

    Patent

    J-GLOBAL

  • イソブチレンの製造方法

    特許第7250277号

    松方 正彦, 酒井 求, 牛木 涼友, 岡村 淳志

    Patent

    J-GLOBAL

  • エチレンの分離方法

    特許第7245699号

    酒井 求, 松方 正彦, 摩庭 篤, 内田 雅人

    Patent

    J-GLOBAL

  • 酢酸の製造方法

    清水 雅彦, 齋藤 玲, 平林 信行, 竹田 和史, 松方 正彦, 酒井 求

    Patent

    J-GLOBAL

  • アルケン及び/又はアルカンの濃縮方法並びに濃縮装置

    松方 正彦, 酒井 求, 片岡 ▲祥▼, 山木 雄大, 堤内 出, 坂本 尚之, 久次米 正博, 虎谷 信雄

    Patent

    J-GLOBAL

  • ゼオライト膜複合体の製造方法及びゼオライト膜複合体

    松方 正彦, 酒井 求

    Patent

    J-GLOBAL

  • イソブチレンの製造方法

    松方正彦, 酒井求, 牛木涼友, 岡村淳志

    Patent

    J-GLOBAL

  • エチレンの分離方法

    酒井求, 松方正彦, 摩庭篤, 内田雅人

    Patent

    J-GLOBAL

  • 直鎖状共役ジエンの分離方法

    特許第6479044号

    松方 正彦, 酒井 求, 佐々木 康人, 濱松 辰雄, 木村 信啓

    Patent

    J-GLOBAL

  • 直鎖状共役ジエンの分離方法

    特許第6479044号

    松方 正彦, 酒井 求, 佐々木 康人, 濱松 辰雄, 木村 信啓

    Patent

    J-GLOBAL

  • パラキシレンの製造方法

    特許第6455923号

    松方 正彦, 酒井 求, 金子 拓矢, 荒木 泰博, 濱松 辰雄, 木村 信啓

    Patent

    J-GLOBAL

  • ノルマルパラフィンの分離方法

    特許第6270685号

    松方 正彦, 瀬下 雅博, 酒井 求, 金子 拓矢, 濱松 辰雄, 木村 信啓

    Patent

    J-GLOBAL

  • ノルマルパラフィンまたはパラキシレンの分離方法およびゼオライト膜複合体

    特許第6211481号

    松方 正彦, 瀬下 雅博, 酒井 求, 金子 拓矢, 木村 信啓, 荒木 泰博, 足立 倫明

    Patent

    J-GLOBAL

  • 直鎖状共役ジエンの分離方法

    松方 正彦, 酒井 求, 佐々木 康人, 濱松 辰雄, 木村 信啓

    Patent

    J-GLOBAL

  • パラキシレンの製造方法

    松方 正彦, 酒井 求, 金子 拓矢, 荒木 泰博, 濱松 辰雄, 木村 信啓

    Patent

    J-GLOBAL

  • ノルマルパラフィンの分離方法

    松方 正彦, 瀬下 雅博, 酒井 求, 金子 拓矢, 濱松 辰雄, 木村 信啓

    Patent

    J-GLOBAL

  • ノルマルパラフィンまたはパラキシレンの分離方法およびゼオライト膜複合体

    松方 正彦, 瀬下 雅博, 酒井 求, 金子 拓矢, 木村 信啓, 荒木 泰博, 足立 倫明

    Patent

    J-GLOBAL

  • オレフィンの分離方法およびゼオライト膜複合体

    松方 正彦, 瀬下 雅博, 酒井 求, 木村 信啓, 足立 倫明, 和久 俊雄

    Patent

    J-GLOBAL

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Syllabus

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Teaching Experience

  • _

    Waseda University  

    2023.04
    -
    Now
     

  • _

    Waseda University  

    2023.04
    -
    Now
     

  • _

    Waseda University  

    2023.04
    -
    Now
     

  • _

    Waseda University  

    2023.04
    -
    Now
     

  • _

    Waseda University  

    2023.04
    -
    Now
     

  • _

    Waseda University  

    2023.04
    -
    Now
     

  • Fundamentals of Materials Chemistry

    Waseda University  

    2023.04
    -
    Now
     

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Research Institute

  • 2023
    -
    2024

    Waseda Research Institute for Science and Engineering   Concurrent Researcher

Internal Special Research Projects

  • ゼオライトナノシート分離膜の開発

    2023  

    　View Summary

    　カーボンニュートラル社会実現に向けて、二酸化炭素や水素、アンモニア、酸素等の有効利用のため、省エネルギーなガス分離精製技術が求められている。ゼオライト膜は日本企業から実用化されており、省エネルギーかつ簡便な膜分離技術として既に利用されているが、大規模実装に向けた更なる発展・普及のためには、透過性の向上が課題である。本研究では、従来型多孔質膜の10倍以上の透過性を目標として、ナノシート化したゼオライトを集積させた超高速ガス分離膜を開発する。　本研究では、複数種類のナノシートゼオライトの合成に成功した。また、得られたナノシートゼオライトを積層するために複数（ろ過法、プレス法等）の手法を検討した。その結果、ナノシートゼオライトが積層した薄膜を得ることができ、極めて高いガス透過性を有することを見出した。　本研究の成果は、2024年度学術変革領域(A)（公募研究）への応募へとつながった。

  • 二酸化炭素資源化膜反応器のための高温水蒸気分離膜の開発

    2023  

    　View Summary

    　2050年カーボンニュートラルの達成のために、大規模な二酸化炭素資源化技術の研究開発は急務である。近年、二酸化炭素から化学品や燃料を製造する種々の反応（逆水性ガスシフト、メタノール合成、Fischer-Tropsch合成等）が注目されている。　これらの反応では、副生成物として生成する多量の水蒸気が、反応速度の低下や反応器および触媒の劣化を引き起こす。反応系内から分離膜を用いて副生成物である水蒸気を選択的に除去することで、反応の効率化や反応器・触媒の長寿命化が期待される。　本研究では、種々のゼオライト膜を合成し、高温水蒸気とガス（水素やCO2）混合物に対する透過分離特性を評価した。その結果、ゼオライトの骨格構造およびゼオライト中のカチオン種が高温水蒸気透過選択性に大きな影響を与えることがわかった。　本研究成果の一部は、2024年度科研費（若手）への応募へつながった。

  • 新規ゼオライト膜の合成法およびその透過分離特性の検討

    2014  

    　View Summary

    　本研究では、分離プロセスの省エネルギー化に資する材料として新規ゼオライト膜の開発を行った。既報に従い新規ゼオライト粉末の合成を行い、その耐酸性について試験を行った。その結果、新規ゼオライトは非常に高い耐酸性を有することが明らかとなった。次に、調製条件（結晶化温度、結晶化時間、合成液組成）を鋭意検討し、新規ゼオライトを多孔質アルミナ支持体上へ薄膜化した。得られた新規ゼオライト膜はアルコールから水を選択的に分離することが可能であった。今後は酸からの脱水やガス分離（窒素/酸素, 窒素/二酸化炭素）にも応用する予定である。