Chromium Addition to Alumina-Supported Platinum Catalysts and Effect on Catalytic Activity in Methane Combustion

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Sakae Takenaka¹  Hideki Matsune¹  Mardwita¹  Masahiro Kishida¹ 

[1] Department of Chemical Engineering, Graduate School of Engineering, Kyushu University

关键词: Methane Combustion;    Impregnation Method;    Platinum and Chromium Catalysts;    Chromium Effect;    X-Ray Photoelectron Spectroscopy;   

DOI  :  10.1252/jcej.12we025

来源: Maruzen Company Ltd

【 摘 要 】

References(21)Cited-By(1)We investigated the addition of chromium to alumina-supported Pt catalysts and its effect on catalytic activity in methane combustion. The Pt and Cr binary alumina-supported catalysts exhibited much higher activity than those without Cr. Alumina-supported Cr catalysts contain two chromium species, Cr3+ and Cr6+. From XPS analysis, it was found that more Cr6+ species existed in the binary catalysts than in the single alumina-supported Cr catalysts. Pt species in the binary catalysts may promote Cr oxidation. Since Cr6+ species are known to be more active than Cr3+ species in oxidation reactions, the increase in Cr6+ in the binary catalysts may contribute to their higher activity compared with the Pt/Al2O3 catalyst.

【 授权许可】

Unknown