Direct Synthesis of Hydrogen Peroxide Over Au-Pd Catalysts Prepared by Electroless Deposition

被引：12
作者：
Alba-Rubio, Ana C. [1 ]
Plauck, Anthony [1 ]
Stangland, Eric E. [2 ]
Mavrikakis, Manos [1 ]
Dumesic, James A. [1 ]
机构：
[1] Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USA
[2] Dow Chem Co USA, Core R&D, Midland, MI 48674 USA
来源：
CATALYSIS LETTERS | 2015年 / 145卷 / 12期
关键词：
Electroless deposition; Gold; Palladium; Hydrogen peroxide; Direct synthesis; BIMETALLIC CATALYSTS; PALLADIUM NANOPARTICLES; MOLECULAR ADSORPTION; CARBON-MONOXIDE; PARTICLE-SIZE; OXYGEN; ALLOYS; GOLD; O-2; H-2;
D O I：
10.1007/s10562-015-1621-5
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：
Electroless deposition is used to deposit sub-monolayer amounts of Au onto pre-existing Pd nanoparticles supported on silica. Catalyst performance is analyzed for the direct synthesis of hydrogen peroxide (H2O2) at 278 K. We demonstrate that moderate Au coverages on Pd (up to ca. 0.7 monolayers) are not effective for improving selectivity to H2O2 and do not suppress the undesirable decomposition of H2O2. Results from FTIR measurements of CO adsorbed on these catalysts suggest that contiguous Pd sites remain at the surface following deposition of Au, and these sites remain active for O-O bond scission.
引用
收藏
页码：2057 / 2065
页数：9
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