MESOPOROUS NI-X-AL2O3 XEROGEL CATALYST, PREPARATION METHOD THEREOF, AND METHOD FOR PREPARING METHANE USING SAID CATALYST

摘要

The present invention relates to a mesoporous nickel-X-alumina xerogel catalyst (X=an active metal including nickel) using two active metals manufactured by a single process, a manufacturing method thereof and a manufacturing method for methane using the catalyst in the methanation reaction of carbon dioxide and, more specifically, to a manufacturing method for methane (synthetic natural gas) by the methanation reaction of carbon dioxide in a continuous flow type reactor by using the nickel-X-alumina mixed xerogel catalyst which has a carbon dioxide conversion rate of 50-70% in methanation reaction, wherein the X is at least one selected from the group consisting of Fe, Co, Ni, Zr, Y, Zn, Ce, La, Sm, Mg and Ca. The present invention provides the manufacturing method for the mesoporous nickel-X-alumina xerogel catalyst with excellent reproducibility by using a single sol-gel method, has a high resistibility against carbon deposition and sintering reaction due to heating of methanation reaction by using the manufacturing method and is able to obtain an excellent catalyst with excellent rereduction capacity of an oxidized metal catalyst. Additionally, the present invention provides a manufacturing method for methane with excellent conversion rate of carbon dioxide in which the dissociation energy of carbon monoxide which is an important property of methanation reaction by using the catalyst and has excellent conversion rate of carbon dioxide.