Catalytic combustion of toluene over platinum supported on Ce-Zr-O solid solution modified by Y and Mn.
A series of CeO(2)-ZrO(2) mixed oxides were prepared using coprecipitation method and characterized by BET, oxygen storage capacity (OSC), X-ray diffraction (XRD) and H(2)-temperature-programmed reduction (H(2)-TPR). The catalytic activities toward toluene combustion were investigated in a micro-reactor. The results demonstrate that the catalytic activity of Pt/gamma-Al(2)O(3)/Ce(0.50)Zr(0.50)O(2) monolithic catalyst can be greatly improved by doping metal into Ce(0.50)Zr(0.50)O(2). When doping Y and Mn into Ce(0.50)Zr(0.50)O(2) simultaneously, the catalyst Pt/gamma-Al(2)O(3)/Ce(0.40)Zr(0.40)Y(0.10)Mn(0.10)O(X) shows the highest activity. The T(10) (the temperature of 10% toluene conversion) and the complete conversion temperature (the temperature of 90% toluene conversion) of toluene are 443 and 489K, respectively. Gas hourly space velocity (GHSV) results show that the prepared catalyst can be applied in a wide range of GHSV (from 12,000 to 20,000h(-1)). The catalyst prepared shows great potential for practical application.
Zhi Min
Liu
L
College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, PR China. liuzhimin2648@sina.com
Jian Li
Wang
W
Jun Bo
Zhong
Z
Yao Qiang
Chen
C
Sheng Hui
Yan
Y
Mao Chu
Gong
G
D002384:Catalysis; D002586:Cesium / Q000737:chemistry*; D002627:Chemistry, Physical / Q000379:methods*; D004867:Equipment Design; D005740:Gases; D017745:Incineration; D008345:Manganese / Q000737:chemistry*; D008670:Metals; D010100:Oxygen / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*; D013696:Temperature; D014050:Toluene / Q000737:chemistry*; D014961:X-Ray Diffraction; D015019:Yttrium / Q000737:chemistry*; D015040:Zirconium / Q000737:chemistry*
D005740:Gases; D008670:Metals; D002586:Cesium; D014050:Toluene; D008345:Manganese; D010984:Platinum; D015019:Yttrium; D015040:Zirconium; D010100:Oxygen