Methanol selective oxidation to methyl formate on Au-Pd/SiO<sub>2</sub> catalysts with different calcination temperatures

SHI Rui-ping; WANG Hui; ZHU Hua-qing; WU Zhi-wei; QIN Zhang-feng; FAN Wei-bin; WANG Jian-guo

Volume 40 Issue 08

Aug. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > (08): 985-991

SHI Rui-ping, WANG Hui, ZHU Hua-qing, WU Zhi-wei, QIN Zhang-feng, FAN Wei-bin, WANG Jian-guo. Methanol selective oxidation to methyl formate on Au-Pd/SiO2 catalysts with different calcination temperatures[J]. Journal of Fuel Chemistry and Technology, 2012, (08): 985-991.

Citation:

SHI Rui-ping, WANG Hui, ZHU Hua-qing, WU Zhi-wei, QIN Zhang-feng, FAN Wei-bin, WANG Jian-guo. Methanol selective oxidation to methyl formate on Au-Pd/SiO₂ catalysts with different calcination temperatures[J]. Journal of Fuel Chemistry and Technology, 2012, (08): 985-991.

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Methanol selective oxidation to methyl formate on Au-Pd/SiO₂ catalysts with different calcination temperatures

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2011-11-03
Rev Recd Date: 2012-02-17
Publish Date: 2012-08-31

Abstract

Abstract

Au-Pd/SiO₂ catalysts with different calcination temperatures were prepared by sol-immobilization method; their catalytic performance in oxidation of methanol to methyl formate was investigated. Among 200~500℃, Au-Pd/SiO₂ catalyst calcined at 400℃ exhibits the best catalytic activity in the topic reaction at room temperature, and 25.3% methanol conversion with 100% selectivity to methyl formate can be achieved at100℃. They were characterized by BET, XRD, UV-vis DRS, XPS, TEM and DRIFTS. Good dispersity of Au and Pd, proper particle size of Au and Pd, the formation of Au-Pd bimetallic nanoparticles, and strong interaction between Au and Pd in the Au-Pd/SiO₂ catalyst are beneficial to the oxidation of methanol to methyl formate. Furthermore, a preliminary reaction mechanism of methanol oxidation to methyl formate on the Au-Pd/SiO₂ catalyst is inferred and methyl formate is gained from intermediate species methoxy in this reaction mechanism.
- methanol,
- methyl formate,
- calcination temperature,
- Au-Pd/SiO₂

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References(26)

References

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