Dechlorination of chlorobenzene on vanadium-based catalysts for low-temperature SCR

Dong Wang; Jianjun Chen; Yue Peng; Wenzhe Si; Xiansheng Li; Bing Li; Junhua Li

doi:10.1039/c7cc08705e

Dechlorination of chlorobenzene on vanadium-based catalysts for low-temperature SCR

Chem Commun (Camb). 2018 Feb 20;54(16):2032-2035. doi: 10.1039/c7cc08705e.

Authors

Dong Wang¹, Jianjun Chen, Yue Peng, Wenzhe Si, Xiansheng Li, Bing Li, Junhua Li

Affiliation

¹ State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China. pengyue83@tsinghua.edu.cn lijunhua@tsinghua.edu.cn.

PMID: 29411782
DOI: 10.1039/c7cc08705e

Abstract

Chlorobenzene (CB) inhibits SCR activity of V-based catalysts at low temperature, though the adsorption amount is small. NH₃ adsorption increases due to the break in the C-Cl bond during CB oxidation. The dissociated Cl^- ions provide extra Brønsted acid sites, leading to the formation of inactive NH₄Cl. Ce and Mn improve dechlorination, forming more NH₄Cl on the catalyst surface.