Promoting the Direct H2O2 Generation Catalysis by Using Hollow Pd-Sn Intermetallic Nanoparticles

被引：35

作者：

Zhang, Junbo ^{[1
]}

Shao, Qi ^{[1
]}

Zhang, Ying ^{[1
]}

Bai, Shuxing ^{[1
]}

Feng, Yonggang ^{[1
]}

Huang, Xiaoqing ^{[1
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China

来源：

SMALL | 2018年 / 14卷 / 16期

基金：

中国国家自然科学基金;

关键词：

hollow; hydrogen peroxide; intermetallic; palladium; tin; HYDROGEN-PEROXIDE SYNTHESIS; PALLADIUM CATALYSTS; CO2; HYDROGENATION; OXYGEN; SELECTIVITY; INTERFACE; NANOCAGES; SUPPORT; SITES; WATER;

D O I：

10.1002/smll.201703990

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Although direct hydrogen (H-2) oxidation to hydrogen peroxide (H2O2) is considered as a promising strategy for direct H2O2 synthesis, the desirable conversion efficiency remains formidable challenge. Herein, highly active and selective direct H-2 oxidation to H2O2 is achieved by using hollow Pd-Sn inter-metallic nanoparticles (NPs) as the catalysts. By tuning the catalytic solvents and catalyst supports, the efficiency of direct H-2 oxidation to H2O2 can be optimized well with the hollow Pd2Sn NPs/P25 exhibiting H2O2 selectivity up to 80.7% and productivity of 60.8 mol kg(cat)(-1) h(-1). In situ diffuse reflectance infrared Fourier transform spectroscopy of CO adsorption results confirm the different surface atom arrangements between solid and hollow Pd-Sn NPs. X-ray photoelectron spectra results show that the higher efficiency of Pd2Sn NPs/P25 is due to its higher content of metallic Pd and higher ratio of Snx+, which benefit H2O2 production and selectivity.

引用

页数：7

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