MODIFICATION OF THE CATALYTIC PROPERTIES OF SULFATED ZIRCONIA BY ADDITION OF METAL PROMOTERS

被引：115

作者：

COELHO, MA

RESASCO, DE

SIKABWE, EC

WHITE, RL

机构：

[1] UNIV OKLAHOMA,SCH CHEM ENGN,NORMAN,OK 73019

[2] UNIV OKLAHOMA,DEPT CHEM & BIOCHEM,NORMAN,OK 73019

来源：

CATALYSIS LETTERS | 1995年 / 32卷 / 3-4期

关键词：

ALKANE ISOMERIZATION; SULFATED ZIRCONIA; STRONG ACID CATALYSTS; SOLID ACIDS; FEMN-SO4/ZRO2; NI-SO4/ZRO2;

D O I：

10.1007/BF00813219

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：

We have studied the effects of promoting sulfated zirconia catalysts by addition of transition metals. We have found that the addition of Ni causes an activity enhancement comparable to that caused by the addition of Fe and Mn. The TPD/DRIFTS results show that the catalytic activity does not correlate with either Bronsted or Lewis acidity. The high isomerization activity of these catalysts is explained in terms of a bifunctional mechanism in which the metal promoters are responsible for an enhancement in the surface concentration of olefins rather than an enhanced acidity.

引用

页码：253 / 262

页数：10

共 15 条

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