Phillips Petroleum Company

Syntroleum Corporation

Catalytica, Inc.

Paul F Schubert

Donald H Kubicek

Dennis R Kidd

Kent E Mitchell

Kenneth L Agee

Gary A Delzer

Kym Brian Arcuri

Ralph E Bonnell

Denton C Fentress

Jui-Hsin R Huang

Norman L Freeman, Jr

Gil R Hawley

Warren M Ewert

Richard E Lowery

Dodnald H Kubicek

Richard E Lowrey

Norman L Freeman

A process for regenerating a slurry Fischer-Tropsch catalyst, which needs regeneration, involves de-waxing and drying the catalyst sufficiently to produce a free-flowing catalyst powder that is fluidizable; fluidizing the catalyst powder; treating the catalyst powder with an oxygen treatment; reducing the catalyst powder with a reducing gas to form a reduced catalyst powder; and mixing the reduced catalyst powder with hydrocarbons to form a regenerated, slurry catalyst. The oxidation and reduction steps may be repeated. An oxygen treatment includes using a fixed Olevel with ramped temperatures, fixed temperatures with increased Olevels, or a combination.

Process for regenerating a slurry fischer-tropsch catalyst

A process for regenerating a slurry Fischer-Tropsch catalyst, which needs regeneration, involves de-waxing and drying the catalyst sufficiently to produce a free-flowing catalyst powder that is fluidizable; fluidizing the catalyst powder; treating the catalyst powder with an oxygen treatment; reducing the catalyst powder with a reducing gas to form a reduced catalyst powder; and mixing the reduced catalyst powder with hydrocarbons to form a regenerated, slurry catalyst. The oxidation and reduction steps may be repeated. An oxygen treatment includes using a fixed O level with ramped temperatures, fixed temperatures with increased O levels, or a combination.

This invention is a catalyst and a process using that catalyst for oxidizing hydrogen bromide to form elemental bromine. The inventive catalyst composition comprises cerium bromide on certain zirconia containing supports. The zirconia support, preferably largely in the baddeleyite phase, stabilizes the cerium bromide catalyst against cerium oxide formation at operating temperatures and gives the catalyst excellent activity at lower temperatures.

CeBr.sub.3 catalyst

A sulfur absorbent composition having desirable physical properties and comprising zinc oxide and alumina having been treated with a phosphating agent is disclosed. At least a portion of the alumina component of the absorbent composition undergoes a phosphating treatment. The resulting composition is suitable for use in an H.sub.2 S absorption process.

Sulfur absorbents

Hydrogen sulfide is removed from a fluid stream containing hydrogen sulfide by contacting the fluid stream under suitable absorbing conditions with an absorbing composition consisting essentially of zinc oxide and silica. Additionally, the absorbing composition may contain binders and may be promoted, preferably with nickel oxide.

Selective removal of hydrogen sulfide over a zinc oxide and silica

Catalyst supports, catalyst systems, methods for the preparation thereof, and dimerization process therewith are provided catalyst supports are extruded from a thick paste of potassium carbonate and water catalyst systems comprise at least one elemental alkali metal deposited on the catalyst support. Optionally, the catalyst system further comprises at least one promoter.

Potassium carbonate supports, catalysts, and olefin dimerization

A polymerization catalyst useful for the polymerization of olefins is prepared by contacting a metal dihalide compound having a metal selected from Group 2 and Group 12 of the Periodic Table and a transition metal compound which is a hydrocarbyloxide of a transition metal selected from Group 4 and Group 5 to thereby form a first catalyst component; contacting the first catalyst component with at least one organoaluminum precipitating agent to form a solid product; and contacting the solid product with an ester and then an activating agent to form a catalyst. Other aspects of the invention include a catalyst produced by the above described process and a polymerization process employing the thus produced catalyst.

Polyolefin polymerization process, process of producing catalyst, and

Catalyst supports, catalyst systems, methods for the preparation thereof, and dimerization process therewith are provided catalyst supports are extruded from a thick paste of potassium carbonate and water catalyst systems comprise at least one elemental alkali metal deposited on the catalyst sypport. Optionally, the catalyst system further comprises at least one promoter.

Process for preparing carbonate supports and catalysts

Impregnated chloride ions are removed from a chloride containing, platinum on zinc aluminate catalyst support in a specific sequence of operations. In the dechlorination steps, the impregnated platinum is first anchored to the zinc aluminate support in a calcining step, and then the calcined catalyst support is washed with a wash medium to remove the corrosive chloride without removing the platinum catalyst.

Preparation of dehydrogenating catalyst

A method of preparing a novel absorption composition comprising zinc oxide, silica and a fluorine-containing acid by mixing a fluorine-containing acid with zinc oxide and silica followed by an agglomeration step. The novel composition, which can be prepared by the novel method, is utilized by contacting a fluid stream with the novel compositin to remove sulfur from the fluid stream. A further embodiment of the method of preparation involves utilizing a technique for spraying a fluorine-containing acid upon a zinc oxide and slica mixture while mixing the mixture by an inclined rotating disk agglomerator.

Sulfur absorbants

A process is provided which comprises: (a) contacting at least one olefinic compound with an alkali metal/alkali metal carbonate catalyst system at a temperature below the dimerization temperature range of the dimerization reaction; followed by (b) heating said olefin compound and said alkali metal carbonate catalyst system to a temperature in said dimerization temperature range.

Process to reduce fines produced during the catalytic dimerization of

Described is a method for preparing a catalyst support material, comprising commercially available silica, by utilizing a fluorine-containing acid. The novel method is utilized to produce a novel composition that has unique physical properties different from those of typical commercially available silica materials. The novel support material has significantly improved values for crush strength and as good or better pore volume than comparable catalyst support materials. Due to these improved physical properties, the novel composition is more durable and longer lived. Furthermore, the greater pore volume of the novel composition provides for enhanced catalytic activity when the formed silica material is utilized as a catalyst support.

Composition and method of making high porosity, high strength

A method of preparing a novel absorption composition comprising zinc oxide, silica and a fluorine-containing acid by mixing a fluorine-containing acid with zinc oxide and silica followed by an agglomeration step. The novel composition, which can be prepared by the novel method, is utilized by contacting a fluid stream with the novel composition to remove sulfur from the fluid stream. A further embodiment of the method of preparation involves utilizing a technique for spraying a fluorine-containing acid upon a zinc oxide and silica mixture while mixing the mixture by an inclined rotating disk agglomerator.

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Bartlesville, OK, United States of America

Paul F Schubert