Influence of Pt particle size on catalytic combustion of xylenes on carbon aerogel-supported Pt catalysts

被引：39
|
作者：
Padilla-Serrano, MN [1 ]
Maldonado-Hódar, F [1 ]
Moreno-Castilla, C [1 ]
机构：
[1] Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2005年 / 61卷 / 3-4期
关键词：
xylene combustion; Pt catalysts; carbon aerogel supports;
D O I：
10.1016/j.apcatb.2005.05.008
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Pt catalysts supported on a carbon aerogel with different Pt particle sizes were studied in the combustion of o-xylene and M-xylene. Results found show that the activity of the catalysts increased with larger Pt particle size. In addition, the catalysts were activated during consecutive combustion runs and during time on stream. This activation depends on the Pt particle size and type of xylene isomer. Activation was due to the increase in Pt particle size during reaction. The lower activity of catalysts with smaller Pt particle size was due to the stronger Pt-O bonds formed during xylene combustion by the smaller Pt particles. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：253 / 258
页数：6
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