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AssigneeKorea Research Institute of Chemical Tech.
InventorsSang-Eon Park, Jong-San Chang, Kyu-Wan Lee
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A process for producing a synthesis gas having carbon monoxide and hydrogen from the reduction of carbon dioxide with natural gas or lower hydrocarbons having methane as a main component and oxygen and steam over catalyst composed of nickel and, as promotors, alkali metal and alkaline earth metal component supported on silicon-containing support such as zeolite, silica, silicate and silica-alumina which are stable under reaction condition is disclosed. This process characterized in that the catalytic activity and performance property are improved by supporting alkali metal, alkaline earth metal and nickel oxide from metal salts having low melting point uniformly on silicon-containing support having high surface area by solid-state reaction. The amounts of adding alkali metal, alkaline earth metal and nickel are 0.01 to 10% by weight, 1 to 20% by weight and 1 to 20% by weight, respectively. The present invention is conducted in the temperature range from 600.degree. C. to 1000 .degree. C., and under a pressure of normal pressure to 20 atm, and gas hourly space velocity of 1,000 to 500,000/hour.
A process for producing a synthesis gas having carbon monoxide/hydrogen in a ratio of from 1/3 to 3/1, which comprises reacting carbon dioxide with natural gas or lower hydrocarbon having methane as a main component, from 0 to 10 vol % of oxygen and 0 to 10 vol. % of steam, in a molar ratio of 0.2:1 to 5:1 over catalyst composed of nickel and, as promoters, alkali metal and alkaline earth metal component supported uniformly on silicon-containing support at reaction temperature of 600.degree. C. to 1000.degree. C., reaction pressure of 0.5 atm to 20 atm, and space velocity of 1,000 to 500,000 per hour.
Dependencies are inferred from the claim text.