Modification of Cr/SiO2 for the dehydrogenation of propane to propylene in carbon dioxide

被引：25

作者：

Ge, X ^{[1
]}

Zou, H ^{[1
]}

Wang, J ^{[1
]}

Shen, JY ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Nanjing 210093, Peoples R China

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 2005年 / 85卷 / 02期

关键词：

Cr-K/SiO2; catalysts; propane dehydrogenation; propylene; carbon dioxide;

D O I：

10.1007/s11144-005-0268-4

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：

Dehydrogenation of propane to propylene in carbon dioxide was investigated over promoted Cr/SiO2. The results showed that the catalysts were effective for the reaction and CO2 in the feed promoted the catalytic activity. XRD, TPR and microcalorimetric adsorption techniques were used to study the structure and surface acidity of the catalysts. It was found that the surface acidity decreased with the increase of K in the Cr/SiO2 and led to the increase of selectivity toward propylene. A propane conversion of 31% with 91% selectivity to propylene over the 5%Cr-0.4%K/SiO2 catalyst was observed at 923 K with CO2/C3H8 molar ratio of 3.6.

引用

页码：253 / 260

页数：8

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