Methanation process with intermittent reactivation of catalyst

Details Methanation process with intermittent reactivation of catalyst Methanation process with intermittent reactivation of catalyst

1976-12-06

1977-12-27

Mars, Howard T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252466J, C07C 104, C07C 116

Patent

active

040654842

ABSTRACT:
A process is provided for the hydrogenation of carbon monoxide and/or carbon dioxide to form methane (methanation), using certain sulfur-sensitive nickel-alumina catalysts having a relatively low ratio of nickel surface area to nickel mass. It has been found that when such catalysts become deactivated as a result of sulfur poisoning, they can be reactivated to substantially fresh activity by reduction with hydrogen. Other nickel-alumina methanation catalysts having higher nickel surface areas are found to be essentially non-regenerable by hydrogen reduction following sulfur deactivation.

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