ISOMERIZATION AND HYDROGENOLYSIS REACTIONS OF HEXANES OVER PLATINUM CATALYSTS SUPPORTED ON PHYSICAL MIXTURES OF TIO2 AND CEO2

被引：9

作者：

DAUSCHER, A

MAIRE, G

机构：

[1] Laboratoire de Catalyse et Chimie des Surfaces, URA 423 du C.N.R.S., Université Louis Pasteur, 67070 Strasbourg

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1991年 / 69卷 / 02期

关键词：

D O I：

10.1016/0304-5102(91)80150-2

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 isomerisation and hydrogenolysis reactions of 2- and 3-methylpentanes, n-hexane and methylcyclopentane have been studied on platinum catalysts supported on physical mixtures of TiO2 and CeO2, in the atomic ratios of 4, 1 and 0.25. The results have been compared to reference Pt/TiO2 and Pt/CeO2 Catalysts. Particular care was taken on the study of the influences of catalyst pretreatments and metal loadings. Pt/TiO2 catalysts are extremely sensitive to each factor with regard to catalytic activity and selectivities, while Pt/CeO2 catalysts are less influenced. Synergistic effects on activity have been observed for the 2 wt.% Pt/TiO2-CeO2 catalysts as compared to Pt/TiO2 or Pt/CeO2 catalysts treated under similar conditions. Explanations have been put forward taking into account electronic and geometric factors, particularly chlorine effects.

引用

页码：259 / 270

页数：12

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