Standardization of catalyst preparation using reference catalyst: Ion exchange of mordenite type zeolite, Origin of dealumination and recommended standard conditions

Naonobu Katada, Tatsuya Takeguchi, Tatsuya Suzuki, Toshihisa Fukushima, Kinya Inagaki, Setsuo Tokunaga, Hiromichi Shimada, Koichi Sato, Yasunori Oumi, Tsuneji Sano, Kohichi Segawa, Kazuyuki Nakai, Hiroshi Shoji, Peng Wu, Takashi Tatsumi, Takayuki Komatsu, Takao Masuda, Kazunari Domen, Eisuke Yoda, Junko N. KondoToshio Okuhara, Takahide Kanai, Miki Niwa, Masaru Ogura, Masahiko Matsukata, Eiichi Kikuchi, Noriyasu Okazaki, Motoi Takahashi, Akio Tada, Shogo Tawada, Yoshihiro Kubota, Yoshihiro Sugi, Yasuhiko Higashio, Masahiko Kamada, Yukiyo Kioka, Kohei Yamamoto, Takayuki Shouji, Shigeo Satokawa, Yusaku Arima, Yasuaki Okamoto, Hideyuki Matsumoto

    研究成果: Article

    8 引用 (Scopus)

    抄録

    The undesired structural change of mordenite with Si/Al2 = 15 during the ion exchange and during calcination from the sodium form into proton form, especially the dealumination after the calcination, was studied. The 29Si NMR results clarified that calcination of the NH4-form mordenite with Si/Al2 = 15 at >ca. 800 K, followed by the contact of proton-form sample with the atmosphere containing humidity, induced the dealumination. However, the samples carefully kept free from humidity after the heat treatment showed no dealumination or only a low degree of it. The 27Al NMR and ammonia TPD results agreed with these findings. The origin of dealumination is thus considered to be the contact of the proton-form sample with humidity after the calcination. On the other hand, the dealumination was not observed after calcination at <673 K. The 1H NMR indicated that the ca. 1/3 of the ion-exchange sites were blocked by the ammonium cations after calcination at 673 K, suggesting that the dealumination was prevented by the ammonium cations. On the basis of these findings, a standard set of conditions in which one can safely prepare the proton-form zeolite with high quality is proposed. The recommended temperature for the ion exchange is room temperature, because it is high enough to exchange the ions in this case. The most important variable is the calcination temperature; it should be lower than 673 K in order to avoid the dealumination. These conditions were confirmed to yield zeolites with a high framework aluminum content and ordinary catalytic performance.

    元の言語English
    ページ(範囲)75-84
    ページ数10
    ジャーナルApplied Catalysis A: General
    283
    発行部数1-2
    DOI
    出版物ステータスPublished - 2005 4 8

    Fingerprint

    Zeolites
    Calcination
    Standardization
    Ion exchange
    Catalysts
    Protons
    Atmospheric humidity
    Nuclear magnetic resonance
    Ammonium Compounds
    Cations
    Positive ions
    Temperature programmed desorption
    mordenite
    Aluminum
    Ammonia
    Temperature
    Sodium
    Heat treatment
    Ions

    ASJC Scopus subject areas

    • Catalysis
    • Process Chemistry and Technology

    これを引用

    Standardization of catalyst preparation using reference catalyst : Ion exchange of mordenite type zeolite, Origin of dealumination and recommended standard conditions. / Katada, Naonobu; Takeguchi, Tatsuya; Suzuki, Tatsuya; Fukushima, Toshihisa; Inagaki, Kinya; Tokunaga, Setsuo; Shimada, Hiromichi; Sato, Koichi; Oumi, Yasunori; Sano, Tsuneji; Segawa, Kohichi; Nakai, Kazuyuki; Shoji, Hiroshi; Wu, Peng; Tatsumi, Takashi; Komatsu, Takayuki; Masuda, Takao; Domen, Kazunari; Yoda, Eisuke; Kondo, Junko N.; Okuhara, Toshio; Kanai, Takahide; Niwa, Miki; Ogura, Masaru; Matsukata, Masahiko; Kikuchi, Eiichi; Okazaki, Noriyasu; Takahashi, Motoi; Tada, Akio; Tawada, Shogo; Kubota, Yoshihiro; Sugi, Yoshihiro; Higashio, Yasuhiko; Kamada, Masahiko; Kioka, Yukiyo; Yamamoto, Kohei; Shouji, Takayuki; Satokawa, Shigeo; Arima, Yusaku; Okamoto, Yasuaki; Matsumoto, Hideyuki.

    :: Applied Catalysis A: General, 巻 283, 番号 1-2, 08.04.2005, p. 75-84.

    研究成果: Article

    Katada, N, Takeguchi, T, Suzuki, T, Fukushima, T, Inagaki, K, Tokunaga, S, Shimada, H, Sato, K, Oumi, Y, Sano, T, Segawa, K, Nakai, K, Shoji, H, Wu, P, Tatsumi, T, Komatsu, T, Masuda, T, Domen, K, Yoda, E, Kondo, JN, Okuhara, T, Kanai, T, Niwa, M, Ogura, M, Matsukata, M, Kikuchi, E, Okazaki, N, Takahashi, M, Tada, A, Tawada, S, Kubota, Y, Sugi, Y, Higashio, Y, Kamada, M, Kioka, Y, Yamamoto, K, Shouji, T, Satokawa, S, Arima, Y, Okamoto, Y & Matsumoto, H 2005, 'Standardization of catalyst preparation using reference catalyst: Ion exchange of mordenite type zeolite, Origin of dealumination and recommended standard conditions', Applied Catalysis A: General, 巻. 283, 番号 1-2, pp. 75-84. https://doi.org/10.1016/j.apcata.2005.01.026
    Katada, Naonobu ; Takeguchi, Tatsuya ; Suzuki, Tatsuya ; Fukushima, Toshihisa ; Inagaki, Kinya ; Tokunaga, Setsuo ; Shimada, Hiromichi ; Sato, Koichi ; Oumi, Yasunori ; Sano, Tsuneji ; Segawa, Kohichi ; Nakai, Kazuyuki ; Shoji, Hiroshi ; Wu, Peng ; Tatsumi, Takashi ; Komatsu, Takayuki ; Masuda, Takao ; Domen, Kazunari ; Yoda, Eisuke ; Kondo, Junko N. ; Okuhara, Toshio ; Kanai, Takahide ; Niwa, Miki ; Ogura, Masaru ; Matsukata, Masahiko ; Kikuchi, Eiichi ; Okazaki, Noriyasu ; Takahashi, Motoi ; Tada, Akio ; Tawada, Shogo ; Kubota, Yoshihiro ; Sugi, Yoshihiro ; Higashio, Yasuhiko ; Kamada, Masahiko ; Kioka, Yukiyo ; Yamamoto, Kohei ; Shouji, Takayuki ; Satokawa, Shigeo ; Arima, Yusaku ; Okamoto, Yasuaki ; Matsumoto, Hideyuki. / Standardization of catalyst preparation using reference catalyst : Ion exchange of mordenite type zeolite, Origin of dealumination and recommended standard conditions. :: Applied Catalysis A: General. 2005 ; 巻 283, 番号 1-2. pp. 75-84.
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    title = "Standardization of catalyst preparation using reference catalyst: Ion exchange of mordenite type zeolite, Origin of dealumination and recommended standard conditions",
    abstract = "The undesired structural change of mordenite with Si/Al2 = 15 during the ion exchange and during calcination from the sodium form into proton form, especially the dealumination after the calcination, was studied. The 29Si NMR results clarified that calcination of the NH4-form mordenite with Si/Al2 = 15 at >ca. 800 K, followed by the contact of proton-form sample with the atmosphere containing humidity, induced the dealumination. However, the samples carefully kept free from humidity after the heat treatment showed no dealumination or only a low degree of it. The 27Al NMR and ammonia TPD results agreed with these findings. The origin of dealumination is thus considered to be the contact of the proton-form sample with humidity after the calcination. On the other hand, the dealumination was not observed after calcination at <673 K. The 1H NMR indicated that the ca. 1/3 of the ion-exchange sites were blocked by the ammonium cations after calcination at 673 K, suggesting that the dealumination was prevented by the ammonium cations. On the basis of these findings, a standard set of conditions in which one can safely prepare the proton-form zeolite with high quality is proposed. The recommended temperature for the ion exchange is room temperature, because it is high enough to exchange the ions in this case. The most important variable is the calcination temperature; it should be lower than 673 K in order to avoid the dealumination. These conditions were confirmed to yield zeolites with a high framework aluminum content and ordinary catalytic performance.",
    keywords = "Acidity, Catalyst preparation, Dealumination, Ion exchange, Mordenite, Reference catalyst, Standardization, Zeolite",
    author = "Naonobu Katada and Tatsuya Takeguchi and Tatsuya Suzuki and Toshihisa Fukushima and Kinya Inagaki and Setsuo Tokunaga and Hiromichi Shimada and Koichi Sato and Yasunori Oumi and Tsuneji Sano and Kohichi Segawa and Kazuyuki Nakai and Hiroshi Shoji and Peng Wu and Takashi Tatsumi and Takayuki Komatsu and Takao Masuda and Kazunari Domen and Eisuke Yoda and Kondo, {Junko N.} and Toshio Okuhara and Takahide Kanai and Miki Niwa and Masaru Ogura and Masahiko Matsukata and Eiichi Kikuchi and Noriyasu Okazaki and Motoi Takahashi and Akio Tada and Shogo Tawada and Yoshihiro Kubota and Yoshihiro Sugi and Yasuhiko Higashio and Masahiko Kamada and Yukiyo Kioka and Kohei Yamamoto and Takayuki Shouji and Shigeo Satokawa and Yusaku Arima and Yasuaki Okamoto and Hideyuki Matsumoto",
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    volume = "283",
    pages = "75--84",
    journal = "Applied Catalysis A: General",
    issn = "0926-860X",
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    TY - JOUR

    T1 - Standardization of catalyst preparation using reference catalyst

    T2 - Ion exchange of mordenite type zeolite, Origin of dealumination and recommended standard conditions

    AU - Katada, Naonobu

    AU - Takeguchi, Tatsuya

    AU - Suzuki, Tatsuya

    AU - Fukushima, Toshihisa

    AU - Inagaki, Kinya

    AU - Tokunaga, Setsuo

    AU - Shimada, Hiromichi

    AU - Sato, Koichi

    AU - Oumi, Yasunori

    AU - Sano, Tsuneji

    AU - Segawa, Kohichi

    AU - Nakai, Kazuyuki

    AU - Shoji, Hiroshi

    AU - Wu, Peng

    AU - Tatsumi, Takashi

    AU - Komatsu, Takayuki

    AU - Masuda, Takao

    AU - Domen, Kazunari

    AU - Yoda, Eisuke

    AU - Kondo, Junko N.

    AU - Okuhara, Toshio

    AU - Kanai, Takahide

    AU - Niwa, Miki

    AU - Ogura, Masaru

    AU - Matsukata, Masahiko

    AU - Kikuchi, Eiichi

    AU - Okazaki, Noriyasu

    AU - Takahashi, Motoi

    AU - Tada, Akio

    AU - Tawada, Shogo

    AU - Kubota, Yoshihiro

    AU - Sugi, Yoshihiro

    AU - Higashio, Yasuhiko

    AU - Kamada, Masahiko

    AU - Kioka, Yukiyo

    AU - Yamamoto, Kohei

    AU - Shouji, Takayuki

    AU - Satokawa, Shigeo

    AU - Arima, Yusaku

    AU - Okamoto, Yasuaki

    AU - Matsumoto, Hideyuki

    PY - 2005/4/8

    Y1 - 2005/4/8

    N2 - The undesired structural change of mordenite with Si/Al2 = 15 during the ion exchange and during calcination from the sodium form into proton form, especially the dealumination after the calcination, was studied. The 29Si NMR results clarified that calcination of the NH4-form mordenite with Si/Al2 = 15 at >ca. 800 K, followed by the contact of proton-form sample with the atmosphere containing humidity, induced the dealumination. However, the samples carefully kept free from humidity after the heat treatment showed no dealumination or only a low degree of it. The 27Al NMR and ammonia TPD results agreed with these findings. The origin of dealumination is thus considered to be the contact of the proton-form sample with humidity after the calcination. On the other hand, the dealumination was not observed after calcination at <673 K. The 1H NMR indicated that the ca. 1/3 of the ion-exchange sites were blocked by the ammonium cations after calcination at 673 K, suggesting that the dealumination was prevented by the ammonium cations. On the basis of these findings, a standard set of conditions in which one can safely prepare the proton-form zeolite with high quality is proposed. The recommended temperature for the ion exchange is room temperature, because it is high enough to exchange the ions in this case. The most important variable is the calcination temperature; it should be lower than 673 K in order to avoid the dealumination. These conditions were confirmed to yield zeolites with a high framework aluminum content and ordinary catalytic performance.

    AB - The undesired structural change of mordenite with Si/Al2 = 15 during the ion exchange and during calcination from the sodium form into proton form, especially the dealumination after the calcination, was studied. The 29Si NMR results clarified that calcination of the NH4-form mordenite with Si/Al2 = 15 at >ca. 800 K, followed by the contact of proton-form sample with the atmosphere containing humidity, induced the dealumination. However, the samples carefully kept free from humidity after the heat treatment showed no dealumination or only a low degree of it. The 27Al NMR and ammonia TPD results agreed with these findings. The origin of dealumination is thus considered to be the contact of the proton-form sample with humidity after the calcination. On the other hand, the dealumination was not observed after calcination at <673 K. The 1H NMR indicated that the ca. 1/3 of the ion-exchange sites were blocked by the ammonium cations after calcination at 673 K, suggesting that the dealumination was prevented by the ammonium cations. On the basis of these findings, a standard set of conditions in which one can safely prepare the proton-form zeolite with high quality is proposed. The recommended temperature for the ion exchange is room temperature, because it is high enough to exchange the ions in this case. The most important variable is the calcination temperature; it should be lower than 673 K in order to avoid the dealumination. These conditions were confirmed to yield zeolites with a high framework aluminum content and ordinary catalytic performance.

    KW - Acidity

    KW - Catalyst preparation

    KW - Dealumination

    KW - Ion exchange

    KW - Mordenite

    KW - Reference catalyst

    KW - Standardization

    KW - Zeolite

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