Influence of Calcination Temperature and Reaction Atmosphere on the Catalytic Properties of Pt-Sn/SAPO-34 for Propane Dehydrogenation

被引：30

作者：

Nawaz, Zeeshan ^{[1
]}

Tang Xiaoping ^{[1
]}

Chu Yue ^{[1
]}

Wei Fei ^{[1
]}

机构：

[1] Tsinghua Univ, Beijing Key Lab Green Chem React Engn & Technol F, Dept Chem Engn, Beijing 100084, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2010年 / 31卷 / 05期

基金：

中国国家自然科学基金;

关键词：

platinum; tin; SAPO-34; calcination temperature; propane; dehydrogenation; sintering; N-BUTANE DEHYDROGENATION; PTSNNA/ZSM-5; CATALYST; PTSN/ZSM-5; SI/AL RATIO; PROPYLENE; SAPO-34; SN; PERFORMANCE; ZEOLITE; BEHAVIOR;

D O I：

10.1016/S1872-2067(09)60071-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Pt-Sn/SAPO-34 catalyst samples were prepared at different calcination temperatures. The catalysts were characterized by X-ray diffraction, N-2 adsorption, X-ray fluorescence spectroscopy, O-2-pulse coke content measurement, temperature-programmed reduction with hydrogen, and transmission electron microscopy. The activity was measured in a microreactor. The effect of calcination temperature and reaction atmosphere on the catalytic properties of Pt-Sn/SAPO-34 for propane dehydrogenation to propylene was investigated. The catalyst prepared at the calcination temperature of 500 degrees C showed the best performance, while the catalysts prepared above and below the 500 degrees C calcination temperature showed undesirable surface changes such as Pt active site degradation, Pt sintering, loss of Sn, etc. At the reaction temperature of 595 degrees C, Pt-Sn/SAPO-34 was stable and maintained surface metallic properties.

引用

页码：552 / 556

页数：5

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