GA2O3/HZSM5 PROPANE AROMATIZATION CATALYSTS - INFLUENCE OF THE HYDROGEN PRETREATMENT ON THE ACID AND REDOX FUNCTIONS

被引：26

作者：

BARRE, M ^{[1
]}

GNEP, NS ^{[1
]}

MAGNOUX, P ^{[1
]}

SANSARE, S ^{[1
]}

CHOUDHARY, VR ^{[1
]}

GUISNET, M ^{[1
]}

机构：

[1] NATL CHEM LAB,POONA 411008,MAHARASHTRA,INDIA

来源：

CATALYSIS LETTERS | 1993年 / 21卷 / 3-4期

关键词：

PROPANE; AROMATICS; ACID CATALYSTS;

D O I：

10.1007/BF00769479

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 activity and selectivity of a mechanical Ga2O3/HZSM5 mixture in four model reactions (propane aromatization at 803 K, n-heptane cracking and meta-xylene isomerization at 623 K, methylcyclohexane transformation at 773 K) were compared after pretreatment at 873 K under nitrogen and under hydrogen flow. It was thus demonstrated that the hydrogen treatment provoked a significant increase in the dehydrogenating activity of the gallium species but only a small decrease in the protonic acidity. Moreover this hydrogen treatment created a significant hydrogenolysis activity.

引用

页码：275 / 281

页数：7

共 12 条

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