Patent ID: 8710106
Filing Date: 2014-04-29
Classification: B01J,C07C

Abstract:
1. A process of converting a mixture of carbon dioxide and hydrogen into a mixture of water and methane, comprising: (a) contacting a mixture of carbon dioxide and hydrogen in a first reaction zone in the presence of a first catalyst bed comprising at least one layer of ultra-short-channel-length metal substrate, the contacting occurring at a temperature greater than a first designated temperature, so as to produce an effluent comprising water and methane and unconverted carbon dioxide and hydrogen; and (b) contacting the effluent from step (a) in a second reaction zone with a second catalyst bed comprising at least one layer of ultra-short-channel-length metal substrate, the contacting occurring at a temperature equal to or less than a second designated temperature, so as to produce a product comprising water and methane with a carbon dioxide conversion greater than about 80 percent of an equilibrium carbon dioxide conversion under isothermal process conditions.