AROMATIZATION OF HYDROCARBONS OVER Pt- AND Pt-Re-CONTAINING ZEOLITE-Al2O3 CATALYSTS

被引：13

作者：

Engels, S. ^{[1
]}

Lausch, H. ^{[1
]}

Matschei, B. ^{[1
]}

Bragin, O. V. ^{[2
]}

Preobrazhenskii, A. V. ^{[2
]}

Vasina, T. V. ^{[2
]}

机构：

[1] Carl Schorlemmer Tech Univ Leuns Merseburg, Dept Chem, D-4200 Merseburg, Germany

[2] Acad Sci USSR, Inst Organ Chem, Moscow, Russia

来源：

CATALYSIS TODAY | 1988年 / 3卷 / 05期

关键词：

D O I：

10.1016/0920-5861(88)87026-3

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The typical reaction of ethane in a hydrogen flow over Pt-Re/ZSM-Al2O3 catalysts in hydrogenolysis of the C2H6 molecule. Hydrogenolysis activity is thereby enhanced by a high dispersion of the metal phase. However, in a helium atmosphere, the formation of aromatics can be observed which reaches a maximum for ZSM contents between 50 and 70 wt % and surpasses the hydrogenolysis activity of the pure Pt-Re/ZSM catalyst. The utilization of this ability to aromize during the conversion of higher hydrocarbons is hindered by the high hydrocracking activity of the zeolites. However, by adding small amounts of both a ZSM and a Y type zeolite to Al2O3, the aromatization activity and selectivity in the conversion of n-hexane and n-heptane in the presence of about 300 ppm water vapour can be improved.

引用

页码：437 / 443

页数：7

共 9 条

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