Faculty Profiles - SATSUMA, Atsushi

Papers - SATSUMA, Atsushi

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

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

Phys. Chem. Chem. Phys. Vol. 3 page： 880 2001

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

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

Appl. Catal. B: Environmental Vol. 30 ( 1-2 ) page： 151 2001

Language：English Publishing type：Research paper (scientific journal)

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 Reviewed

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

Stud. Surf. Sci. Catal. Vol. 129 page： 837 2000

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

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

Stud. Surf. Sci. Catal. Vol. 130C page： 2189 2000

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

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

Appl. Catal. B Vol. 24 page： 97 2000

Effects of Methane and Oxygen in Decomposition of Nitrous Oxide over Metal Oxide Catalysts Reviewed

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

Catal. Today Vol. 63 ( 2-4 ) page： 347 2000

Mechanism of NO Reduction by CH4 in the Presence of O2 over Pd-H-Mordenite Reviewed

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

J. Catal. Vol. 195 ( 1 ) page： 151 2000

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

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

Stud. Surf. Sci. Catal. Vol. 130B page： 1403 2000

Low temperature radical oxidation of butane over in-situ prepared silica species Reviewed

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

Stud. Surf. Sci. Catal. Vol. 130B page： 1799 2000

Spectroscopic characterization of Cu-Al2O3 catalysts for selective reduction of NO with propene Reviewed

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

Phys. Chem. Chem. Phys. Vol. 2 page： 2435 2000

Formation and reactions of isocyanic acid during the catalytic reduction of nitrogen oxides Reviewed

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

Topics in Catalysis Vol. 10 page： 13 2000

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

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

J. Phys. Chem. B Vol. 104 ( 13 ) page： 2885 2000

Structure Sensitive Reaction over Calcium Oxide - Decomposition of Nitrous Oxide Reviewed

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

J. Mol. Catal. A Chemical Vol. 155 page： 81 2000

Catalytic performance of Ag-Al2O3 catalyst for the selective reduction of NO by higher hydrocarbons Reviewed

Ken-ichi Shimizu, Atsushi Satsuma, and Tadashi Hattori

Appl. Catal. B Vol. 25 page： 239 2000

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

Atsushi Satsuma, Yuichi Kamiya, Yenni Westi and Tadashi Hattori

Appl. Catal. A Vol. 194-195 page： 253 2000

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

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

Chem. Lett. Vol. 2000 page： 210 2000

Number of surface redox sites of V-Sb-O catalysts Reviewed

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

J. Chem. Intermd. Vol. 26 ( 2 ) page： 113 2000

Enhanced de-NOx performance of Ag-aluminate catalyst by increasing carbon number of hydrocarbon reductants Reviewed

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

Chem. Lett. Vol. 1999 page： 1079 1999

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. Vol. 103 ( 25 ) page： 5240-5245 1999

Al K-edge XANES Study for the Quantification of Aluminum Coordination in Alumina Reviewed

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

Chem. Commun. page： 1681-1682 1999

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Papers - SATSUMA, Atsushi