Oxidative dehydro-isomerization of n-butane over anion-promoted Cr2O3/ZrO2 catalysts

被引：11

作者：

Wang, SB ^{[1
]}

Murata, K ^{[1
]}

Hayakawa, T ^{[1
]}

Hamakawa, S ^{[1
]}

Suzuki, K ^{[1
]}

机构：

[1] Natl Inst Mat & Chem Res, Dept Surface Chem, Tsukuba, Ibaraki 305, Japan

来源：

ENERGY & FUELS | 2001年 / 15卷 / 02期

关键词：

D O I：

10.1021/ef000149w

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The oxidative dehydrogenation and isomerization of n-butane to isobutene was investigated over several Cr2O3/ZrO2 catalysts modified by some acidic anions. The effects of acidic promoters on the Cr2O3/ZrO2 catalysts on the properties and catalytic behavior were studied. The modified Cr2O3/ZrO2 catalysts show varying surface physicochemical properties depending on the nature of anions. Addition of anion promoters reduces the surface area and redox potential and it also induces a remarkable change in acid strength. However, the change in the acid site distributions only occurred on the sulfated zirconia- and tungstated zirconia-supported catalysts. Modification of Cr2O3/ZrO2 by acidic anions decreases the butane conversion while it increases the butene and isobutene selectivities, which can be attributed to the variation of the redox property and acid sites.

引用

页码：384 / 388

页数：5

共 23 条

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