Low-temperature CeO2-modified MnMoOx/attapulgite SCR denitration catalyst

• Main Authors: WANG LU, LI XIAZHANG, HUANG XUAN, TANG YIRAN, LUO SHIPING, HU LINA, XIE AIJUAN, YAO CHAO, GU PENGFEI, HUANG XIAOYAN, ZUO SHIXIANG, JIN XIANG
• Format: Patent
• Language: Chinese; English
• Published: 11.01.2019
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention especially relates to a low-temperature CeO2-modified MnMoOx/attapulgite SCR denitration catalyst (abbreviated as CeO2-MnMoOx/ATP), belonging to the field of flue gas denitration. The invention provides the low-temperature CeO2-modified MnMoOx/attapulgite SCR denitration catalyst and a preparation method thereof directed at the disadvantages of poor strength, high denitration reaction temperature, narrow denitration activity range and poor SO2 resistance of conventional carriers for flue gas denitration catalysts. According to the invention, inexpensive attapulgite clay is used as a carrier to support MnMoOx composite metal oxide with excellent low-temperature oxidation performance; meanwhile, CeO2 with unique electron transfer ability and excellent sulfur resistance is usedas a cocatalyst for modifying a main catalyst so as to prepare the composite catalyst with excellent medium-and-low-temperature denitration activity; so the redox capacity of the catalyst in medium-and-low-temperature ranges