CONVERSION OF LIGHT ALKANES TO AROMATIC-HYDROCARBONS .2. ROLE OF GALLIUM SPECIES IN PROPANE TRANSFORMATION ON GAHZSM5 CATALYSTS

被引：179

作者：

GNEP, NS ^{[1
]}

DOYEMET, JY ^{[1
]}

SECO, AM ^{[1
]}

RIBEIRO, FR ^{[1
]}

GUISNET, M ^{[1
]}

机构：

[1] INST SUPER TECN, ESTUDOS CATALISE HETEROGENEA GRP, P-1096 LISBON, PORTUGAL

来源：

APPLIED CATALYSIS | 1988年 / 43卷 / 01期

关键词：

Aromatic Compounds - Catalysts - Zeolites - Gallium Compounds - Applications - Paraffins;

D O I：

10.1016/S0166-9834(00)80908-2

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 conversion of propane into benzenic compounds was studied at 530°C on a series of GaHZSM5 catalysts prepared by impregnation of HZSM5 with a solution of gallium nitrate. Gallium species increase the rate of propane conversion and the sensitivity for aromatics. These species have dehydrogenating activity, increasing both propane activation and naphthene aromatization. The conversion of propane into benzenic compounds on GaHZSM5 catalysts can be considered, therefore, as a bifunctional process in which dehydrogenation reactions are catalyzed by the gallium species and oligomerization and oligomer cyclization by the acid sites. The active gallium species seem to be gallium oxide dispersed in the zeolite rather than gallium cations in an exchange position.

引用

页码：155 / 166

页数：12

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