The British Petroleum Company, P.l.c.

Timothy K McNiff

Sami A Barri

Dilip Dave

Edward A Hyde

Andrew Holt

David M Clayson

A novel catalyst composition which comprises alumina and platinum, is characterized in that the alumina carries internally and/or on its surface, gallium and a Group II metal. The catalyst composition is particularly useful in catalytic reforming of hydrocarbon feestocks.

Catalyst composition

A method for making spherical particles, which includes:

Process for the production of spherical particles

This invention relates to the aromatization of methane rich hydrocarbon feedstock by contact with a gallium loaded zeolite containing a Group VIIB metal or metal compound as catalyst. The preferred metal is rhenium. The reaction proceeds at a temperature between 600.degree.-800.degree. C. in the absence of oxygen. The reaction products are useful as gasoline blending components.

Production of aromatics from hydrocarbon feedstock

This invention relates to a process for selective dealumination, particularly surface dealumination of zeolites by sequential ion-exchange and calcination. The process is selective in the sense that the aluminium atoms within the pore structure of the zeolite remain virtually intact. The surface dealuminated zeolites can be used, after loading with a gallium compound, as catalysts in hydrocarbon conversion reactions.

Selective dealumination of zeolites

This invention relates to a process for selective dealumination, particularly surface dealumination of zeolites by sequential ion-exchange and calcination. The process is selective in the sense that the aluminum atoms within the pore structure of the zeolite remain virtually intact. The surface dealuminated zeolites can be used, after loading with a gallium compound, as catalysts in hydrocarbon conversion reactions.

This invention relates to a process for producing aromatic hydrocarbons by bringing a feedback containing at least 10% w/w of C.sub.2 hydrocarbons into contact with a catalyst composition comprising a gallium loaded ziolite and a Group VIII metal selected from rhodium and platinum. The reaction is carried out at a temperature from 500.degree.-750.degree. C. A WHSV of 0.2-10 and a pressure of 1-20 bar are preferred. The presence of Group VIII metal increases conversion of the C.sub.2 feed reduces formation of undesirable polynuclear aromatics.

Production of aromatics from ethane and/or ethylene

This invention relates to a process for producing aromatic hydrocarbons by bringing a feedstock containing at least 10% w/w of C.sub.2 hydrocarbons into contact with a catalyst composition comprising a gallium loaded zeolite and a Group VIIB or Group VIII metal compound. The reaction is carried out at a temperature from 500.degree.-750.degree. C. A WHSV of 0.2-10 and a pressure of 1-20 bar are preferred. The presence of Group VIIB or Group VIII metal compounds increases conversion of the C.sub.2 feed and reduces formation of undesirable polynuclear aromatics.

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Weybridge, United Kingdom

Timothy K McNiff