|
Hokkaido University Collection of Scholarly and Academic Papers >
Institute for Catalysis >
Peer-reviewed Journal Articles, etc >
Preferential oxidation of carbon monoxide in excess hydrogen over platinum catalysts supported on different-pore-sized mesoporous silica
| Title: | Preferential oxidation of carbon monoxide in excess hydrogen over platinum catalysts supported on different-pore-sized mesoporous silica |
| Authors: | Huang, Shengjun Browse this author | | Hara, Kenji Browse this author | | Okubo, Yasuhiro Browse this author | | Yanagi, Masaaki Browse this author | | Nambu, Hironobu Browse this author | | Fukuoka, Atsushi Browse this author →KAKEN DB |
| Keywords: | Mesoporous silica | | Pore size | | PROX | | Pt catalysts |
| Issue Date: | 31-Aug-2009 |
| Publisher: | Elsevier B.V. |
| Journal Title: | Applied Catalysis A : General |
| Volume: | 365 |
| Issue: | 2 |
| Start Page: | 268 |
| End Page: | 273 |
| Publisher DOI: | 10.1016/j.apcata.2009.06.023 |
| Abstract: | Preferential oxidation (PROX) of carbon monoxide in excess hydrogen has been studied on low Pt loading (0.5-1 wt%) catalysts supported on a series of FSM-type mesoporous silica materials. A support effect has been observed, in which the catalytic activities are closely related with the pore diameter of the support, despite their similar specific surface areas. Pt nanoparticles supported on mesoporous silica with 4.0 nm pore diameter possess the highest CO conversion over a wide range of reaction temperature, i.e. ca. 100% CO conversion in 298-423 K. As a comparison, the Pt particles in small pore supports (1.8 nm) exhibit poor performance under the same reaction conditions, which is barely comparable to the Pt catalysts on amorphous silica. The discrepancy in the mesoporous silica is proposed to be related with the different activities of surface silanols in various supports. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/39398 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 福岡 淳
|
