Effect of alumina and zirconia as binders on the activity of Fe-BEA for NH3-SCR of NO

作     者：Jin Shil Zihao Zhang Mingxia Chen Zhixiang Zhang Wenfeng Shangguan Shunchao Gu Hirano Shin-ichi 

作者机构：Research Center for Combustion and Environment Technology Shanghai Jiao Tong University Shanghai 200240 China School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 China Hirano Institute for Materials Innovation Shanghai Jiao Tong University Shanghai 200240 China 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2018年第12卷第1期

页      面：169-175页

核心收录：

学科分类：080503[工学-材料加工工程] 081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：NH3-SCR NO Fe-BEA Binder Alumina Zirconia 

摘      要：Fe-BEA catalysts are active for the NH3-SCR of NO. For industrial application, a binder should be added to the Fe-BEA catalysts to make them tightly adhere to the monoliths. The addition of alumina and zirconia as binders to the Fe-BEA led to a different effect on NO conversion. The catalytic activity of the mixed samples was evaluated by the temperature programmed procedure in a flow-reactor sys!em, and themechaism was. analyzedvia SEM, BET, andXPS. Itwas found that larger ironparticles were tbrmed by the migration orparent tron pamcles in the Fe-BEA catalyst with alumina. This led to the increase of Fe3＋ magnitude and iron cluster, enhancing the abilities of NO oxidation and storage. Accordingly, the SCR activity increased slightly in low temperature but decreased sharply in high temperature. For the Fe-BEA with zirconia sample, NO oxidation and storage abilities decreased due to the less iron clusters. The increase of Fe ＋ magnitude resulted in higher catalytic oxidation ability, which gave rise to little change in the SCR activity compared with the Fe-BEA.