Výsledky vyhledávání - "Koshiro Nakamura"

Selective Formation of Active Cobalt Species for Direct Methylation of Benzene with Methane on MFI Zeolite by Co-presence of Secondary Elements

Autor: Yasumi Moriwaki, Kana Yamamoto, Naonobu Katada, Satoshi Suganuma, Kazu Okumura, Hitoshi Matsubara, Etsushi Tsuji, Koshiro Nakamura

Publikováno v: Catalysis Letters. 149:2627-2635

The catalytic activity for methylation of benzene was found on Co/MFI zeolite; the activity was generated by loading of Co in the region of Co/Al molar ratio in the final solid = 0.2–0.6 (significantly increased at 0.3–0.4) on a support MFI with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1b643e2d9d21dd05b2481933a52c772c
https://doi.org/10.1007/s10562-019-02855-y

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Direct Methylation of Benzene with Methane Catalyzed by Co/MFI Zeolite

Autor: Kana Yamamoto, Koshiro Nakamura, Akihito Okuda, Naonobu Katada, Ryosuke Itagaki, Satoshi Suganuma, Kazu Okumura, Hitoshi Matsubara, Etsushi Tsuji, Kiyotaka Ohta

Publikováno v: Chemcatchem

Cobalt‐loaded MFI zeolite showed distinct activity for direct methylation of benzene with methane into toluene. High activity was found at around 0.6 of Co/Al molar ratio. Incorporation of carbon from methane into the methyl group of toluene was co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccf56317d88123e9325ecc3c704eae52
https://doi.org/10.1002/cctc.201800724

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Compensation between activation entropy and enthalpy in reactions of aromatic hydrocarbons catalyzed by solid acids

Autor: Naonobu Katada, Ryo Mizuta, Satoshi Suganuma, Koshiro Nakamura, Etsushi Tsuji

Publikováno v: Nakamura, Koshiro. Mizuta, Ryo. Suganuma, Satoshi. et al. Compensation between activation entropy and enthalpy in reactions of aromatic hydrocarbons catalyzed by solid acids. Catalysis Communications. 102. 103-107. 2017-12-31.

Reaction rates of toluene disproportionation (A) and cumene cracking (B) normalized by the number of Bronsted acid sites were analyzed on aluminosilicates. The activation entropy showed linear and compensatory relationship against the activation enth

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1beab61b55267921df310ae40bccc37
http://id.nii.ac.jp/1824/00007124/

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Shape selectivity in toluene disproportionation into para-xylene generated by chemical vapor deposition of tetramethoxysilane on MFI zeolite catalyst

Autor: Takuya Nakagawa, Misaki Kosaka, Satoshi Suganuma, Yasuhiro Araki, Daisuke Mitsuyoshi, Yuta Kataoka, Koshiro Nakamura, Naonobu Katada, Koji Kuroiwa

Publikováno v: Mitsuyoshi, Daisuke. Kuroiwa, Koji. Kataoka, Yuta. et al. Shape selectivity in toluene disproportionation into para-xylene generated by chemical vapor deposition of tetramethoxysilane on MFI zeolite catalyst. Microporous and Mesoporous Materials. 242. 118

Dependence of shape selectivity for para-xylene production by toluene disproportionation on conditions of chemical vapor deposition (CVD) of tetramethoxysilane on MFI (ZSM-5) zeolite were investigated in detail. The CVD after pelletization was necess

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bc8982a6b934738508f44d553b0abc3
http://id.nii.ac.jp/1824/00007296/

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Dealkylation of alkyl polycyclic aromatic hydrocarbon over silica monolayer solid acid catalyst

Autor: Koshiro Nakamura, Masato Nanjo, Shohei Fujiwara, Kazuki Kanai, Kazuki Takeda, Kawaguchi Yusuke, Keisuke Kinugasa, Naoki Uozumi, Satoshi Suganuma, Naonobu Katada, Taku Matsuoka

Publikováno v: Katada, Naonobu. Kawaguchi, Yusuke. Takeda, Kazuki. et al. Dealkylation of alkyl polycyclic aromatic hydrocarbon over silica monolayer solid acid catalyst. Applied Catalysis A: General. 530. 93-101. 2017-01-25.

Dealkylation of alkylnaphthalene, as a model of alkyl polycyclic aromatic hydrocarbon compounds in heavy oils, proceeded selectively on a silica monolayer solid acid catalyst. The activity was generated by the deposition of silica on alumina with gen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7c0589ac92179dd305a2b8ebc51f75e
http://id.nii.ac.jp/1824/00007090/

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Enhancement of Catalytic Activity for Toluene Disproportionation by Loading Lewis Acidic Nickel Species on ZSM-5 Zeolite

Autor: Satoshi Suganuma, Koshiro Nakamura, Akihito Okuda, Naonobu Katada

Publikováno v: This work was published by Elsevier: Suganuma, S., Nakamura, K., Okuda, A., Katada, N., Enhancement of Catalytic Activity for Toluene Disproportionation by Loading Lewis Acidic Nickel Species on ZSM-5 Zeolite, Molecular catalysis. 2017, 435, 110-117. doi

Impregnation of various heteroelements on the ZSM-5 zeolite was applied to improvement of the catalytic activity in toluene disproportionation. Nickel loaded on ZSM-5 (Ni/ZSM-5) exhibited higher catalytic activity (toluene conversion) and lower benze

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eed4da0a04bd5ae09927a4895456c959
https://repository.lib.tottori-u.ac.jp/5728

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Position and Lewis acidic property of active cobalt species on MFI zeolite for catalytic methylation of benzene with methane

Autor: Kazu Okumura, Kana Yamamoto, Hitoshi Matsubara, Naonobu Katada, Satoshi Suganuma, Etsushi Tsuji, Koshiro Nakamura

Publikováno v: Microporous and Mesoporous Materials. 310:110649

Crystallographic position and acidic properties of the Co species in MFI zeolite which was catalytically active for methylation of benzene with methane (CH4 + C6H6 → H3C–C6H5 + H2) were investigated with UV–vis spectroscopy and an ammonia IRMS-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7175865b424e800275990c6179662166
https://doi.org/10.1016/j.micromeso.2020.110649

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Comparative study of direct methylation of benzene with methane on cobalt-exchanged ZSM-5 and ZSM-11 zeolites

Autor: Koshiro Nakamura, Kazu Okumura, Tatsuya Okubo, Peidong Hu, Hitoshi Matsubara, Yutaka Yanaba, Toru Wakihara, Kenta Iyoki, Naonobu Katada

Publikováno v: Applied Catalysis A: General. 601:117661

Methane exists in massive quantity on the Earth, and considerable efforts have been made to develop effective methods to convert chemically inert methane into value-added products. Recently, cobalt-exchanged ZSM-5 zeolite has been found to be a compe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::59c0f96245c87b5bd3116e535cc1f6da
https://doi.org/10.1016/j.apcata.2020.117661

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