Preferential CO oxidation over supported Pt catalysts

• Published in: The Korean journal of chemical engineering Vol. 33; no. 6; pp. 1781 - 1787
• Main Authors: Jeon, Kyung-Won, Jeong, Dae-Woon, Jang, Won-Jun, Shim, Jae-Oh, Na, Hyun-Suk, Kim, Hak-Min, Lee, Yeol-Lim, Jeon, Byong-Hun, Kim, Seong-Heon, Bae, Jong Wook, Roh, Hyun-Seog
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.06.2016; 한국화학공학회
• Subjects: Biotechnology; Catalysis; Chemistry; Chemistry and Materials Science; Industrial Chemistry/Chemical Engineering; Materials Science; Reaction Engineering; 화학공학; Pt/Al; Reducibility; Electron Transfer; Preferential CO Oxidation; Dispersion; O
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-016-0050-5

Preferential CO oxidation reaction has been carried out at a gas hourly space velocity of 46,129 h −1 over supported Pt catalysts prepared by an incipient wetness impregnation method. Al2O3, MgO-Al 2 O 3 (MgO=30 wt% and 70 wt%) and MgO were employed as supports for the target reaction. 1 wt% Pt/Al 2 O 3 catalyst exhibited very high performance (X CO >90% at 175 ° C for 100 h) in the reformate gases containing CO 2 under severe conditions. This result is mainly due to the highest Pt dispersion, easier reducibility of PtO x , and easier electron transfer of metallic Pt. In addition, 1 wt% Pt/Al 2 O 3 catalyst was also tested in the reformate gases with both CO 2 and H 2 O to evaluate under realistic condition.