초록 ▼

A method is disclosed for the treatment of single particle iron-containing syngas (synthes.s gas) conversion catalysts comprising iron, a crystalline acidic aluminosilicate zeolite having a silica to alumina ratio of at least 12, a pore size greater than about 5 Angstrom units and a constraint index

A method is disclosed for the treatment of single particle iron-containing syngas (synthes.s gas) conversion catalysts comprising iron, a crystalline acidic aluminosilicate zeolite having a silica to alumina ratio of at least 12, a pore size greater than about 5 Angstrom units and a constraint index of about 1-12 and a matrix. The catalyst does not contain promoters and the treatment is applicable to either the regeneration of said spent single particle iron-containing catalyst or for the initial activation of fresh catalyst. The treatment involves air oxidation, hydrogen reduction, followed by a second air oxidation and contact of the iron-containing single particle catalyst with syngas prior to its use for the catalytic conversion of said syngas. The single particle iron-containing catalysts are prepared from a water insoluble organic iron compound.

대표청구항 ▼

A method for treating either a fresh or spent single particle iron-containing syngas conversion catalyst composition prepared by forming a mixture of a water insoluble iron derivative of an organic compound, a matrix and an acidic crystalline aluminosilicate zeolite having a silica-to-alumina ratio

A method for treating either a fresh or spent single particle iron-containing syngas conversion catalyst composition prepared by forming a mixture of a water insoluble iron derivative of an organic compound, a matrix and an acidic crystalline aluminosilicate zeolite having a silica-to-alumina ratio of at least 12, a pore size greater than about 5 Angstrom units and a constraint index of about 1 to 12 which comprises: (a) oxidizing said catalyst in a stream of flowing air at a pressure in the range of 0-200 psig for about 0.1 to 16 hours at a temperature within the range of about 500°-1,000°F., (b) treating the product from step (a) in a stream of flowing hydrogen at a pressure in the range of 0-200 psig for about 0.1 to 16 hours at a temperature within the range of about 500°-1,000°F., (c) treating the product from step (b) in air at a pressure in the range of 0-200 psig for about 0.1-16 hours at a temperature within the range of about 500°-1,000°F., and (d) treating the product from step (c) with synthesis gas at atmospheric pressure at temperatures of about 550°-650°F. for about 0.5 to 24 hours.