Hg0 Removal by V2O5 Modified Palygorskite in Simulated Flue Gas at Low Temperature

被引：1
作者：
Wang, Junwei [1 ]
Wang, Huan [1 ]
Jiang, Caihong [1 ]
Wang, Xie [1 ]
Zhang, Jianli [2 ]
机构：
[1] Anqing Normal Univ, Coll Chem & Chem Engn, Anqing 246011, Peoples R China
[2] Ningxia Univ, State Key Lab High Efficiency Utilizat Coal & Gre, Yinchuan 750021, Ningxia, Peoples R China
来源：
CATALYSTS | 2022年 / 12卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Hg-0; V2O5; PG; palygorskite; catalytic oxidation; low temperature; ELEMENTAL MERCURY REMOVAL; CATALYTIC-OXIDATION; ACTIVATED CARBON; ADSORPTION; MECHANISM; SO2; NO; COMPONENTS; REDUCTION; EMISSION;
D O I：
10.3390/catal12020243
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 V2O5-modified palygorskite (V2O5/PG catalysts) were prepared and used for Hg-0 removal in simulated flue gas at low temperature. It was found that the V2O5/PG catalyst had excellent performance for Hg-0 removal at 150 degrees C. O-2 exhibited a positive effect on Hg-0 removal over V2O5/PG, while SO2 and H2O showed an inhibiting effect. However, Hg-0 removal efficiency showed a promotion trend in the presence of H2O, SO2, and O-2. The Brunauer-Emmett-Teller (BET) method, scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) were applied to characterize the physicochemical properties of the V2O5/PG catalyst. Mercury temperature-programmed desorption (Hg-TPD) experiments were also conducted to identify the mercury species adsorbed on the V2O5/PG catalyst, and the pathway of Hg-0 removal over V2O5/PG was also discussed. The used V2O5/PG catalyst after Hg-0 removal was regenerated, and its capability for Hg-0 removal can be completely recovered. The V2O5/PG-Re-300 degrees C catalyst showed excellent performance and good stability for Hg-0 removal after regeneration.
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页数：11
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共 48 条
[1]   Removal of elemental mercury by clays impregnated with KI and KBr [J].
Cai, Ji ;
Shen, Boxiong ;
Li, Zhuo ;
Chen, Jianhong ;
He, Chuan .
CHEMICAL ENGINEERING JOURNAL, 2014, 241 :19-27
[2]   Novel Effective Catalyst for Elemental Mercury Removal from Coal-Fired Flue Gas and the Mechanism Investigation [J].
Chen, Wanmiao ;
Pei, Yang ;
Huang, Wenjun ;
Qu, Zan ;
Hu, Xiaofang ;
Yan, Naiqiang .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2016, 50 (05) :2564-2572
[3]   Mercury emission control in coal-fired plants:: The role of wet scrubbers [J].
Diaz-Somoano, Mercedes ;
Unterberger, Sven ;
Hein, Klaus R. G. .
FUEL PROCESSING TECHNOLOGY, 2007, 88 (03) :259-263
[4]   Removal of Gas-Phase Elemental Mercury in Flue Gas by Inorganic Chemically Promoted Natural Mineral Sorbents [J].
Ding, Feng ;
Zhao, Yongchun ;
Mi, Liangliang ;
Li, Hailong ;
Li, Yang ;
Zhang, Junying .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2012, 51 (07) :3039-3047
[5]   Mercury emission and behavior in primary ferrous metal production [J].
Fukuda, Naomichi ;
Takaoka, Masaki ;
Doumoto, Shingo ;
Oshita, Kazuyuki ;
Morisawa, Shinsuke ;
Mizuno, Tadao .
ATMOSPHERIC ENVIRONMENT, 2011, 45 (22) :3685-3691
[6]   A Critical Review on the Heterogeneous Catalytic Oxidation of Elemental Mercury in Flue Gases [J].
Gao, Yanshan ;
Zhang, Zhang ;
Wu, Jingwen ;
Duan, Linhai ;
Umar, Ahmad ;
Sun, Luyi ;
Guo, Zhanhu ;
Wang, Qiang .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2013, 47 (19) :10813-10823
[7]   Effects of flue gas components on removal of elemental mercury over Ce-Mnox/Ti-PILCs [J].
He, Chuan ;
Shen, Boxiong ;
Li, Fukuan .
JOURNAL OF HAZARDOUS MATERIALS, 2016, 304 :10-17
[8]   Adsorption and Oxidation of Elemental Mercury over Ce-MnOx/Ti-PILCs [J].
He, Chuan ;
Shen, Boxiong ;
Chen, Jianhong ;
Cai, Ji .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2014, 48 (14) :7891-7898
[9]   Historical Mercury Releases from Commercial Products: Global Environmental Implications [J].
Horowitz, Hannah M. ;
Jacob, Daniel J. ;
Amos, Helen M. ;
Streets, David G. ;
Sunderland, Elsie M. .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2014, 48 (17) :10242-10250
[10]   Contribution of contaminated sites to the global mercury budget [J].
Kocman, David ;
Horvat, Milena ;
Pirrone, Nicola ;
Cinnirella, Sergio .
ENVIRONMENTAL RESEARCH, 2013, 125 :160-170
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