The role of vanadium species during SO2 removal over a V2O5/AC catalyst

被引：10
作者：
Guo, Qianqian [1 ,2 ]
Jing, Wen [2 ]
Hou, Yaqin [2 ]
Li, Yulin [2 ]
Li, Fenghai [1 ]
Huang, Zhanggen [2 ]
机构：
[1] Heze Univ, Sch Chem & Chem Engn, Heze 274015, Peoples R China
[2] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China
来源：
CATALYSIS SCIENCE & TECHNOLOGY | 2020年 / 10卷 / 01期
基金：
中国国家自然科学基金;
关键词：
ACTIVATED CARBON; SULFUR-DIOXIDE; NO REDUCTION; FLUE-GAS; COPPER-OXIDE; NITRIC-OXIDE; ADSORPTION; NH3; REGENERATION; MECHANISM;
D O I：
10.1039/c9cy01975h
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The role of vanadium species during SO2 removal over a V2O5/AC catalyst was studied in detail using in situ diffuse reflectance infrared Fourier transform spectroscopy, Raman spectroscopy, temperature programmed desorption, X-ray photoelectron spectroscopy and N-2 adsorption. Results revealed that V2O5 reacted with SO2 to form a stable vanadium(v) sulfate of V2O3(SO4)(2). However, V2O3(SO4)(2) did not deactivate the catalyst and was catalytically active towards SO2 oxidation, leading to the formation of H2SO4. Thus, the sulfur capacity of the V2O5/AC catalyst was determined by formation of V2O3(SO4)(2) and H2SO4. Increasing V2O5 loading enhanced the formation of V2O3(SO4)(2) but inhibited that of H2SO4 because V2O3(SO4)(2) occupied the pores for H2SO4 storage.
引用
收藏
页码：231 / 239
页数：9
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