Atlantic Richfield Company

Henry Erickson

John Mooi

Marvin F Johnson

Jin S Yoo

An improved method for preparing a hydrocarbon hydrotreating catalyst containing a major amount of alumina and a minor amount of at least one Group VIB or Group VIII metal comprising:

Hydrocarbon hydrotreating process

Phosphorous-containing catalyst and method for preparing and using same

Alumina particles derived from hydrous alumina predominating in .alpha.-alumina monohydrate having a crystallite size of less than 100A and having increased porosity can be prepared by a process which comprises forming a mixture of an aqueous slurry of the hydrous alumina and at least one surface active agent, drying this mixture, forming macrosize particles from the dried mixture and calcining the macrosized particles.

Method for reforming hydrocarbons

Method for producing alumina

Improved methods for reducing the amounts of hydrocarbon, carbon monoxide and nitrogen oxides in the exhaust gases of internal combustion engines involving the use of catalysts comprising a major amount of crystalline magnesium aluminate spinel. Improved catalysts as well as improved methods for making the present catalyst are also included.

Method for producing a supported catalyst

A composition of matter useful as a catalyst support which comprises macrosized particles of a mixture of two distinct phases. These phases are:

Reforming with a platinum-alumina catalyst

A solid phase catalyst composition comprising a complex of nickel, a Group V-A electron donor ligand, and a non-protonic Lewis acid and reducing agent on a solid, acidic silica-based support. Exemplary is a complex comprising nickel acetylacetonate, trialkylphosphine, and ethylaluminum sesquichloride on a solid, acidic silica-based support. Use of the catalyst in the polymerization of olefin hydrocarbons is also disclosed.

Olefin polymerization catalyst

A composition of matter useful, for example, as a catalyst component, comprising macrosized particles containing a mixture of two distinct phases, the phases being 1) calcined discrete entities comprising first alumina a major portion of which have a minimum dimension greater than about 50 microns and a maximum dimension of less than 200 microns and 2) a phase comprising calcined second alumina wherein the weight ratio of (1) to (2) is within the range from about 0.05:1 to about 2:1 and the second alumina is first calcined after the formation of microsize particles. Methods for producing this composition of matter and for using this composition of matter in a hydrocarbon conversion process are also included.

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Park Forest, IL, United States of America

Henry Erickson