E.i. Dupont De Nemours and Company

Conocophillips Company

Conoco Inc.

Kamel M Makar

Leo E Manzer

Wenchun Chao

Munirpallam Appadorai Subramanian

Munirpallam A Subramanian

Ajoy P Raje

William Duke Everhart

Olga P Ionkina

Roger George Rudolph

A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process preferably includes at least cobalt, rhenium, and a promoter selected from the group including boron, phosphorus, potassium, manganese, and vanadium. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.

Fischer-tropsch processes and catalysts with promoters

A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process includes at least a Fischer-Tropsch metal and boron. The Fischer-Tropsch metal preferably includes cobalt and optionally ruthenium or platinum. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.

Boron promoted catalysts and fischer-tropsch processes

Fischer-Tropsch processes and catalysts with promoters

A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process includes at least cobalt, rhenium, and a promoter selected from the group including boron, phosphorus, potassium, manganese, and vanadium. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.

A process for recovering a polyester, preferably polyethylene terephthalate, from contaminated polyester waste containing non-polyester components, such as polyester blended with cotton or other fibers in fabric or fiber forms, polyester magnetic tapes, coated polyester films and engineering resins, by dissolving the polyester in molten dimethylterephthalate, methyl-p-toluate or dimethylisophthalate as solvent and separating the polyester solution from the non-polyester components. The polyester can subsequently be recovered by crystallization or the polyester solution can be used as a feedstock for methanolysis to form dimethylterephthalate (DMT) and alkylene glycol. The DMT can be subsequently hydrolyzed to recover terephthalic acid (TPA).

Recovery of polyester from contaminated polyester waste

Sodium hydroxide and hydrogen cyanide are reacted in aqueous solution to produce sodium cyanide of maximum crystal size at temperatures and with residence times selected to produce less than about 0.3% by weight sodium formate in the sodium cyanide product.

Sodium cyanide crystallization process control

A palladium-on-alumina catalyst having high activity and long life and which gives low anthraquinone usage in the cyclic anthraquinone process for making H.sub.2 O.sub.2 is produced by impregnating the alumina under conditions such that the pore surfaces are rendered alkaline and the rate of diffusion of catalytic metal into the pores is controlled.

Growing community of inventors

Wilmington, DE, United States of America

Kamel M Makar