HYDROGEN BACK-SPILLOVER EFFECTS IN THE AROMATIZATION OF ETHYLENE ON HYBRID ZSM-5 CATALYSTS

被引：50

作者：

DUFRESNE, LA

LEVANMAO, R

机构：

[1] CONCORDIA UNIV,DEPT CHEM & BIOCHEM,CATALYSIS LAB,1455 DE MAISONNEUVE BLVD W,MONTREAL H3G 1M8,QUEBEC,CANADA

[2] CONCORDIA UNIV,INORGAN MAT LABS,MONTREAL H3G 1M8,QUEBEC,CANADA

来源：

CATALYSIS LETTERS | 1994年 / 25卷 / 3-4期

关键词：

ETHYLENE AROMATIZATION; ZSM-5; ZEOLITE; ZN OXIDE BASED COCATALYSTS; HYBRID CATALYSTS; HYDROGEN SPILLOVER;

D O I：

10.1007/BF00816317

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：

The involvement of hydrogen back-spillover is confirmed for the aromatization of ethylene. Using hydrogen monitoring during catalytic reactions with ethylene, it has been observed that the amount of hydrogen in the gaseous effluents is much more important on hybrid catalysts than on pure ZSM-5 zeolites. The active sites on ZnO based co-catalysts are believed to be partial reduction zinc sites created during the induction period. ZnO precipitate favors the release of hydrogen species as ethane. ZnO/Al2O3 co-precipitate favors hydrogen recombination.

引用

页码：371 / 383

页数：13

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