Effect of heat treatment on Au-Pd catalysts synthesized by sol immobilisation for the direct synthesis of hydrogen peroxide and benzyl alcohol oxidation

被引：61
|
作者：
Pritchard, James [1 ]
Piccinini, Marco [1 ]
Tiruvalam, Ramchandra [2 ]
He, Quian [2 ]
Dimitratos, Nikolaos [1 ]
Lopez-Sanchez, Jose A. [1 ]
Morgan, David J. [1 ]
Carley, Albert F. [1 ]
Edwards, Jennifer K. [1 ]
Kiely, Christopher J. [2 ]
Hutchings, Graham J. [1 ]
机构：
[1] Cardiff Univ, Sch Chem, Cardiff CF10 3AT, Wales
[2] Lehigh Univ, Dept Mat Sci & Engn, Bethlehem, PA 18015 USA
来源：
CATALYSIS SCIENCE & TECHNOLOGY | 2013年 / 3卷 / 02期
基金：
英国工程与自然科学研究理事会;
关键词：
GOLD-PALLADIUM CATALYSTS; SELECTIVE OXIDATION; BIMETALLIC CATALYSTS; H-2; H2O2; O-2; NANOPARTICLES; OXYGEN; TEMPERATURE; GLYCEROL;
D O I：
10.1039/c2cy20234d
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：
We have investigated the effect of heat treatment in air on Au-Pd nanoparticles supported on titania and activated carbon prepared via the immobilisation of PVA-stabilised alloy nanoparticles. The catalytic activity of the gold-palladium nanoparticles was affected by both metal and PVA loading, as well as the degree of interaction of the nanoparticles with the support. The turnover frequency numbers for benzyl alcohol and hydrogen peroxide synthesis were also sensitive to the calcination procedure employed and find a doubling of catalytic activity when using activated carbon as opposed to TiO2 as the support material. These results illustrate the importance of understanding the precise metal-support interaction of catalyst systems designed for benzyl alcohol oxidation and hydrogen peroxide synthesis.
引用
收藏
页码：308 / 317
页数：10
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