Revealing the Different Roles of Sulfates on Pt/Al2O3 Catalyst for Methane and Propane Combustion

被引：12

作者：

Cen, Bingheng ^{[1
]}

Wang, Weiyue ^{[1
]}

Zhao, Peipei ^{[1
]}

Liu, Chufeng ^{[1
]}

Chen, Jian ^{[1
]}

Lu, Jiqing ^{[1
]}

Luo, Mengfei ^{[1
]}

机构：

[1] Zhejiang Normal Univ, Inst Phys Chem, Zhejiang Key Lab React Chem Solid Surfaces, Key Lab,Minist Educ Adv Catalysis Mat, Jinhua 321004, Zhejiang, Peoples R China

来源：

CATALYSIS LETTERS | 2022年 / 152卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Catalytic combustion; Pt/al(2)O(3) catalyst; Sulfates; Methane; Propane; ALUMINA CATALYSTS; TOTAL OXIDATION; OXYGEN-VACANCY; PERFORMANCE; INTERFACE; PLATINUM; ORDER;

D O I：

10.1007/s10562-021-03675-9

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：

A series of Pt catalysts supported on SO42- group modified Al2O3 were synthesized and tested for methane and propane combustion. The introduction of SO42- group promoted the surface acidity but reduced the quantity of exposed surface Pt atoms due to strong coordination effect. The presence of SO42- group significantly promoted the propane combustion reaction but inhibited the methane combustion reaction. It can be inferred that the promotion on propane combustion is ascribed to the enhanced activation of C-C bond (370.3 kJ mol(-1)) by sulfates. Whereas the sulfates are not favorable for the activation and cracking of C-H bond (439.3 kJ mol(-1)), and the reduced number of exposed Pt sites results in the activity decrease of methane combustion.

引用

页码：863 / 871

页数：9

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