Alkali-treatment technique - New method for modification of structural and acid-catalytic properties of ZSM-5 zeolites

Masaru Ogura; Shin Ya Shinomiya; Junko Tateno; Yasuto Nara; Mikihiro Nomura; Eiichi Kikuchi; Masahiko Matsukata

doi:10.1016/S0926-860X(01)00645-7

Alkali-treatment technique - New method for modification of structural and acid-catalytic properties of ZSM-5 zeolites

Masaru Ogura, Shin Ya Shinomiya, Junko Tateno, Yasuto Nara, Mikihiro Nomura, Eiichi Kikuchi, Masahiko Matsukata

研究成果: Article

395 引用（Scopus）

抜粋

ZSM-5 zeolite having a SiO₂/Al₂O₃ molar ratio of 39.4 was treated in a NaOH alkali solution and the changes in structural and acidic properties were investigated. A siliceous species was selectively dissolved from the framework of zeolite, although a lower amount of Al was also eluted. In this procedure, mesopores with a uniform size were formed on the zeolite, while the microporous structure remained. The acidic property was changed very little quantitatively or qualitatively, even though the catalytic activity for cracking of cumene was enhanced by the alkali-treatment. This can be explained by the facts that adsorptive and diffusive properties of cumene through micropores of the ZSM-5 are increased by the creation of mesopores.

元の言語	English
ページ（範囲）	33-43
ページ数	11
ジャーナル	Applied Catalysis A: General
巻	219
発行部数	1-2
DOI	https://doi.org/10.1016/S0926-860X(01)00645-7
出版物ステータス	Published - 2001 10 5

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

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10.1016/S0926-860X(01)00645-7

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Ogura, M., Shinomiya, S. Y., Tateno, J., Nara, Y., Nomura, M., Kikuchi, E., & Matsukata, M. (2001). Alkali-treatment technique - New method for modification of structural and acid-catalytic properties of ZSM-5 zeolites. Applied Catalysis A: General, 219(1-2), 33-43. https://doi.org/10.1016/S0926-860X(01)00645-7

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abstract = "ZSM-5 zeolite having a SiO2/Al2O3 molar ratio of 39.4 was treated in a NaOH alkali solution and the changes in structural and acidic properties were investigated. A siliceous species was selectively dissolved from the framework of zeolite, although a lower amount of Al was also eluted. In this procedure, mesopores with a uniform size were formed on the zeolite, while the microporous structure remained. The acidic property was changed very little quantitatively or qualitatively, even though the catalytic activity for cracking of cumene was enhanced by the alkali-treatment. This can be explained by the facts that adsorptive and diffusive properties of cumene through micropores of the ZSM-5 are increased by the creation of mesopores.",

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AU - Nara, Yasuto

AU - Nomura, Mikihiro

AU - Kikuchi, Eiichi

AU - Matsukata, Masahiko

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