SU Huijuan,Xu Youbing, XU Xiufeng, AN Lidun,QI Caixia
(Institute of Applied Catalysis,Yantai University; Shandong Applied Research Center for Gold Technology (Au-SDARC), Yantai 264005,Shandong,China)
Abstract: A series of KOH-Au/Al2O3 catalysts were prepared by the incipient wetness impregnation method. The catalysts were characterized by ICP-AES, FTIR, HRTEM, and UV-vis techniques. Their catalytic activity and on-line stability for CO oxidation in dry and wet feed at low temperatures were investigated. The results show that the addition of KOH enhanced the stability at the expense of the catalytic activity, and it is ascribed to the pre-formation of carbonate-like species on the catalyst surface from CO2 in air.
Key words: Au catalyst; KOH; CO oxidation; stability;
Email: qicx@ytu.edu.cn
Journal of Molecular Catalysis, Vol. 25, Issue 1, 2011, 43~48.
