A cermet dual-phase hydrogen-permeable membrane, a preparation method thereof and a reactor for ammonia decomposition coupled reduction of carbon dioxide

Abstract

The present application belongs to the field of catalytic separation engineering, and particularly relates to a metal ceramic dual-phase hydrogen-permeable membrane, a preparation method thereof and a reactor for ammonia decomposition coupled with carbon dioxide reduction. The metal ceramic dual-phase hydrogen-permeable membrane is prepared by using ceramic LWO and metal Ni powder as raw materials, and ethanol as a solvent. After the raw materials and the solvent are mixed, ball milled, dried, a small amount of powder is taken and pressed into a sheet in a mold, and then sintered under Ar atmosphere, a dense Ni-LWO membrane is obtained. Finally, a Ni-CeO2 catalyst is coated on the surface of the Ni-LWO membrane to obtain the metal ceramic dual-phase hydrogen-permeable membrane. The membrane has high hydrogen permeation rate, high mechanical strength, high CO x resistance, strong performance, and can be applied to high-temperature environment, and has good thermal and chemical stability and CO x resistance and other advantages. The present application also provides a membrane preparation method, which is simple in preparation process and low in cost. Meanwhile, the hydrogen-permeable membrane can be used to construct an ammonia decomposition coupled with CO2 reduction membrane reactor.

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