HIGHLY ACTIVE SELF-RECOVERABLE COMPOSITE OXIDE CATALYST FOR REVERSE WATER GAS SHIFT REACTION

摘要

A disclosure is related to a composite oxide catalyst for a reverse water gas shift (RWGS) reaction, which is a reaction for obtaining water and carbon monoxide by reacting hydrogen with carbon dioxide, and particularly, to a self-recoverable composite oxide catalyst for a reverse water gas shift reaction, which is composed of a compound of Ce_1-xM_xO_2-0.5x (M is one element selected from the group consisting of Y, La, Nd, Sm, and Gd) and Fe₂O₃ as a composite oxide, thus has an excellent thermal stability at high temperature, and has high carbon dioxide conversion and high carbon monoxide selectivity even under a strong reducing atmosphere, which is a process condition of the reverse water gas shift reaction. Also, the composite oxide exhibits excellent catalytic activity even at the reaction condition of low temperature such as 400° C., and thus enables a large amount of carbon dioxide to be removed at low cost.