研究者詳細 - 薩摩　篤

論文 - 薩摩　篤

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Mechanistic causes of hydrocarbon effect on the activity of Ag-Al2O3 catalyst for selective reduction NO 査読有り

Ken-ichi Shimizu, Junji Shibata, Atsushi Satsuma and Tadashi Hattori

Phys. Chem. Chem. Phys. 3 巻頁： 880 2001年

Silver-alumina catalysts for selective reduction of NO by higher hydrocarbons: structure of active sites and reaction mechanism 査読有り

Ken-ichi Shimizu, Junji Shibata, Hisao Yoshida, Atsushi Satsuma, Tadashi Hattori

Appl. Catal. B: Environmental 30 巻 ( 1-2 ) 頁： 151 2001年

記述言語：英語掲載種別：研究論文（学術雑誌）

Silver-alumina catalysts prepared by sol.gel method (Ag-Al2O3) and impregnation method (Ag/Al2O3) were studied for the selective catalytic reduction (SCR) of NO by higher alkanes (n-hexane and n-octane). UV.VIS and Ag K-edge XAFS results established the structure of the catalysts; below 2 wt.%, highly dispersed Ag+ ions are predominant Ag species, while at higher Ag loading, Agn clusters are predominant. A relationship between the structure of Ag species and their catalytic function for SCR by n-octane was clari.ed. Ag+ ions are responsible for the selective reduction of NO to N2, while the Agn clusters are responsible for the hydrocarbon combustion and N2O formation. The mechanism of SCR by n-hexane on Ag-Al2O3, which mainly consists of Ag+ ions, were investigated by in situ FTIR spectroscopy. During NO + n-hexane + O2 reaction, the acetate produced via the partial oxidation of n-hexane and the nitrates produced via the oxidation of NO were main adspecies in the steady-state condition at 473.623 K. The acetate, which was stable in O2 or NO, was reactive in NO+O2. Nitrates, which were relatively stable in n-hexane, were quite reactive toward n-hexane+O2. The rate of nitrates reaction in n-hexane+O2 was close to the steady-state rate of NO reduction over wide range of temperature, indicating that the nitrate is a possible intermediate in the SCR. A proposed mechanism, suggesting the reaction of nitrates with partially oxidized hydrocarbon species as a crucial step, explains the steady-state kinetic results. At relatively high NO concentration or at low temperature, nitrates should inhibit the reaction by strongly adsorbing on the catalyst surface.

Radical Type Catalytic Sites on Mesoporous Silica 査読有り

Tadashi Hattori, Takashi Ebigase, Yositaka Inaki, Hisao Yoshida, and Atsushi Satsuma

Stud. Surf. Sci. Catal. 129 巻頁： 837 2000年

Acid strength of support materials as a factor controlling catalytic activity of noble metal catalysts for catalytic combustion 査読有り

Yoshiteru Yazawa, Naonobu Takagi, Noriko Kagi, Akiko Ishikawa, Shin-ichi Komai, Hisao Yoshida, Atsushi Satsuma, and Tadashi Hattori

Stud. Surf. Sci. Catal. 130C 巻頁： 2189 2000年

Influence of intracrystalline diffusion on the selective catalytic reduction of NO by hydrocarbon over Cu-MFI zeolite 査読有り

Akira Shichi, Atsushi Satsuma, Shin-ichi Komai and Tadashi Hattori

Appl. Catal. B 24 巻頁： 97 2000年

Effects of Methane and Oxygen in Decomposition of Nitrous Oxide over Metal Oxide Catalysts 査読有り

Atsushi Satsuma, Hajime Maeshima, Kiyoshi Watanabe, and Tadashi Hattori

Catal. Today 63 巻 ( 2-4 ) 頁： 347 2000年

Mechanism of NO Reduction by CH4 in the Presence of O2 over Pd-H-Mordenite 査読有り

Ken-ichi, Shimizu, Humio Okada, Yasuhisa Nakamura, Atsushi Satsuma, and Tadashi Hattori

J. Catal. 195 巻 ( 1 ) 頁： 151 2000年

Molecular design of highly dispersed transition-metal oxide catalysts for selective catalytic reduction of NO by hydrocarbons 査読有り

Ken-ichi Shimizu, Hajime Maeshima, Hisaya Kawabata, Hisao Yoshida, Atsushi Satsuma, and Tadashi Hattori

Stud. Surf. Sci. Catal. 130B 巻頁： 1403 2000年

Low temperature radical oxidation of butane over in-situ prepared silica species 査読有り

Atsushi Satsuma, Naruaki Sugiyama, Yuichi Kamiya, and Tadashi Hattori

Stud. Surf. Sci. Catal. 130B 巻頁： 1799 2000年

Spectroscopic characterization of Cu-Al2O3 catalysts for selective reduction of NO with propene 査読有り

Ken-ichi Shimizu, Hajime Maeshima, Hisao Yoshida, Atsushi Satsuma, and Tadashi Hattori

Phys. Chem. Chem. Phys. 2 巻頁： 2435 2000年

Formation and reactions of isocyanic acid during the catalytic reduction of nitrogen oxides 査読有り

Noel W. Cant, Dean C. Chambers, Andrew D. Cowan, Irene O. Y. Liu, and Atsushi Satsuma

Topics in Catalysis 10 巻頁： 13 2000年

Intermediates in the Selective Reduction of NO by Propene over Cu-Al2O3 Catalysts: Transient in situ FTIR Study 査読有り

Ken-ichi Shimizu, Hisaya Kawabata, Hajime Maeshima, Atsushi Satsuma, and Tadashi Hattori

J. Phys. Chem. B 104 巻 ( 13 ) 頁： 2885 2000年

Structure Sensitive Reaction over Calcium Oxide - Decomposition of Nitrous Oxide 査読有り

Atsushi Satsuma, Ryugo Akahori, Masatoshi Kato, Shin-ichi Komai, Hisao Yoshida and Tadashi Hattori

J. Mol. Catal. A Chemical 155 巻頁： 81 2000年

Catalytic performance of Ag-Al2O3 catalyst for the selective reduction of NO by higher hydrocarbons 査読有り

Ken-ichi Shimizu, Atsushi Satsuma, and Tadashi Hattori

Appl. Catal. B 25 巻頁： 239 2000年

Dimethylpyridine-Temperature Programmed Desorption (DMP-TPD) for Measurement of Strength of Bronsted and Lewis Acid Sites on Metal Oxide Catalysts 査読有り

Atsushi Satsuma, Yuichi Kamiya, Yenni Westi and Tadashi Hattori

Appl. Catal. A 194-195 巻頁： 253 2000年

Crystal field effect on the chemical shift in Cu L3 XANES spectra of copper(II) compounds 査読有り

Ken-ichi Shimizu, Hajime Maeshima, Hisao Yoshida, Atsushi Satsuma, and Tadashi Hattori

Chem. Lett. 2000 巻頁： 210 2000年

Number of surface redox sites of V-Sb-O catalysts 査読有り

Atsushi Satsuma, Satit Phiyanalinmat, Miki Yashiro, and Tadashi Hattori

J. Chem. Intermd. 26 巻 ( 2 ) 頁： 113 2000年

Enhanced de-NOx performance of Ag-aluminate catalyst by increasing carbon number of hydrocarbon reductants 査読有り

Ken-ichi Shimizu, Junji Shibata, Atsushi Satsuma and Tadashi Hattori

Chem. Lett. 1999 巻頁： 1079 1999年

Role of Acetate and Nitrates in the Selective Catalytic Reduction of NO by Propene over Alumina Catalyst as Investigated by FTIR

Journal of Physical Chemistry B. 103 巻 ( 25 ) 頁： 5240-5245 1999年

Al K-edge XANES Study for the Quantification of Aluminum Coordination in Alumina 査読有り

Ken-ichi Shimizu, Yuko Kato, Tomoko Yoshida, Hisao Yoshida, Atsushi Satsuma, and Tadashi Hattori

Chem. Commun. 頁： 1681-1682 1999年

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