Cu-VWT Catalysts for Synergistic Elimination of NOx and Volatile Organic Compounds from Coal-Fired Flue Gas

作者：Xiao, Gaofei; Guo, Ziyang; Lin, Beilong; Fu, Mingli; Ye, Daiqi; Hu, Yun^*

来源：Environmental Science and Technology, 2022, 56(14): 10095-10104.

DOI：10.1021/acs.est.2c02083

• Cu-VWT catalyst
• coal-fired flue gas
• synergistic removal
• NOx and VOCs

A dual-function catalyst, designated as Cu5-VWT, has been constructed for the synergistic removal of NOx and volatile organic compounds under complex coal-fired flue gas conditions. The removal of toluene, propylene, dichloromethane, and naphthalene all exceeded 99% (350 degrees C), and the catalyst could effectively block the generation of polycyclic aromatic hydrocarbons. Mechanistic studies have shown that Cu sites on the Cu5-VWT catalyst facilitate catalytic oxidation, while V sites facilitate NOx reduction. Thus, toluene oxidation and NOx reduction can proceed simultaneously. The removal of total hydrocarbons and non-methane total hydrocarbons from 1200 m(3 center dot)h(-1) real coal-fired flue gas by a monolithic catalyst were determined as 92 and 96%, respectively, much higher than those of 54 and 72% over a commercial VWT catalyst, indicating great promise for industrial application.

• 单位
  y