caa a22 4500 445388218 CHVBK 20180317143038.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s11144-011-0324-1 doi (NATIONALLICENCE)springer-10.1007/s11144-011-0324-1 Platinum catalysts supported on silicas: effect of silica characteristics on their catalytic activity in carbon monoxide oxidation [Elektronische Daten] [Mi-Young Kim, Se Park, Jung-Hyun Park, Chae-Ho Shin, Won-Jin Moon, Nark-Eon Sung, Gon Seo] Platinum catalysts supported on silicas with various physicochemical properties were prepared in order to investigate the effect of silica characteristics on their platinum dispersion and catalytic activity in the oxidation of carbon monoxide. Although titania-incorporation into silica and further treatment of the impregnated platinum precursor with hydrogen peroxide were effective for improving the dispersion and stability of platinum catalysts supported on silicas, regardless of the characteristic of the silicas, the platinum catalysts supported on fumed silica with a medium level of surface hydroxyl group concentration exhibited the highest catalytic activity among those supported on mesoporous silica, silica gel, and precipitated silica. The required properties of the highly active platinum catalyst seemed to be a high dispersion of platinum, the formation of a stable titania layer, and the generation of strong acid sites. By contrast, the precipitated silica with a small surface area and high concentration of surface hydroxyl groups was not appropriate for a catalytic support for platinum catalysts. Akadémiai Kiadó, Budapest, Hungary, 2011 Platinum nationallicence Silica support nationallicence Titania nationallicence Dispersion nationallicence CO oxidation nationallicence Kim Mi-Young School of Applied Chemical Engineering and the Research Institute for Catalysis, Chonnam National University, 77 Yongbong-ro, Buk-gu, 500-757, Gwangju, Republic of Korea aut Park Se School of Applied Chemical Engineering and the Research Institute for Catalysis, Chonnam National University, 77 Yongbong-ro, Buk-gu, 500-757, Gwangju, Republic of Korea aut Park Jung-Hyun Department of Chemical Engineering, Chungbuk National University, 52 Seongbong-ro, Heungdeok-gu, 361-763, Cheongju Chungbuk, Republic of Korea aut Shin Chae-Ho Department of Chemical Engineering, Chungbuk National University, 52 Seongbong-ro, Heungdeok-gu, 361-763, Cheongju Chungbuk, Republic of Korea aut Moon Won-Jin Korea Basic Science Institute Gwangju Center, 77 Yongbong-ro, Buk-gu, 500-757, Gwangju, Republic of Korea aut Sung Nark-Eon Pohang Accelerator Laboratory, San-31 Hyoja-dong, 790-784, Pohang, Kyungbuk, Republic of Korea aut Seo Gon School of Applied Chemical Engineering and the Research Institute for Catalysis, Chonnam National University, 77 Yongbong-ro, Buk-gu, 500-757, Gwangju, Republic of Korea aut Reaction Kinetics, Mechanisms and Catalysis Springer Netherlands 103/2(2011-08-01), 463-479 1878-5190 103:2<463 2011 103 11144 https://doi.org/10.1007/s11144-011-0324-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11144-011-0324-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kim Mi-Young School of Applied Chemical Engineering and the Research Institute for Catalysis, Chonnam National University, 77 Yongbong-ro, Buk-gu, 500-757, Gwangju, Republic of Korea aut NATIONALLICENCE 700 1- Park Se School of Applied Chemical Engineering and the Research Institute for Catalysis, Chonnam National University, 77 Yongbong-ro, Buk-gu, 500-757, Gwangju, Republic of Korea aut NATIONALLICENCE 700 1- Park Jung-Hyun Department of Chemical Engineering, Chungbuk National University, 52 Seongbong-ro, Heungdeok-gu, 361-763, Cheongju Chungbuk, Republic of Korea aut NATIONALLICENCE 700 1- Shin Chae-Ho Department of Chemical Engineering, Chungbuk National University, 52 Seongbong-ro, Heungdeok-gu, 361-763, Cheongju Chungbuk, Republic of Korea aut NATIONALLICENCE 700 1- Moon Won-Jin Korea Basic Science Institute Gwangju Center, 77 Yongbong-ro, Buk-gu, 500-757, Gwangju, Republic of Korea aut NATIONALLICENCE 700 1- Sung Nark-Eon Pohang Accelerator Laboratory, San-31 Hyoja-dong, 790-784, Pohang, Kyungbuk, Republic of Korea aut NATIONALLICENCE 700 1- Seo Gon School of Applied Chemical Engineering and the Research Institute for Catalysis, Chonnam National University, 77 Yongbong-ro, Buk-gu, 500-757, Gwangju, Republic of Korea aut NATIONALLICENCE 773 0- Reaction Kinetics, Mechanisms and Catalysis Springer Netherlands 103/2(2011-08-01), 463-479 1878-5190 103:2<463 2011 103 11144 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer