High temperature CO_2 absorption using lithium zirconate powder

摘要

In order to confirm the possibility to be a high temperature CO_2 absorbent, a reversible reaction between lithium zirconate and CO_2 was examined. Experimental results revealed that lithium zirconate powder absorbs 400 times as much CO_2 in volume preferentially at around 500 deg C and under high CO_2 partial pressure. Since the fuel reforming or shift conversion process in power plants is performed in a pressurized gas atmosphere at 400-700 deg C, the fact suggests the advantage of lithium zirconate as the absorbent in energy power plants.