Gas-phase elemental mercury capture by a V2O5/AC catalyst

被引：95
作者：
Wang, Junwei [1 ,2 ]
Yang, Jianli [1 ]
Liu, Zhenyu [1 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
[3] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
来源：
FUEL PROCESSING TECHNOLOGY | 2010年 / 91卷 / 06期
基金：
国家高技术研究发展计划(863计划);
关键词：
Elemental mercury; Capture; V2O5/AC catalyst; V2O5; Oxidation; ACTIVATED COKE; SO2; REMOVAL; FLUE-GAS; OXIDATION; REDUCTION; CARBON; COMBUSTION; ADSORPTION; SORBENTS; TRANSFORMATIONS;
D O I：
10.1016/j.fuproc.2010.01.017
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Gas-phase elemental mercury (Hg-0) capture by an activated coke (AC) supported V2O5 (V2O5/AC) catalyst was studied in simulated flue gas and compared with that by the AC. The study on the influences of V2O5 loading, temperature, capture time and flue gas components (O-2, SO2, H2O and N-2) shows that the Hg-0 capture capability of V2O5/AC is much higher than that of AC. It increases with an increase in V2O5 loading and is promoted by O-2. which indicates the important role of V2O5 in Hg-0 oxidation and capture; it is promoted slightly by SO2 but inhibited by H2O; it increases with an increase in temperature up to 150 degrees C when Hg desorption starts. X-ray photoelectron spectroscopy analysis and sequential chemical extraction experiments indicate that the main states of Hg captured on V2O5/AC are HgO and HgSO4. Temperature programmed desorption experiments were also made to understand the stability of the Hg captured. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：676 / 680
页数：5
相关论文
共 35 条
[1]   Selective extractions to assess the biogeochemically relevant fractionation of inorganic mercury in sediments and soils [J].
Bloom, NS ;
Preus, E ;
Katon, J ;
Hiltner, M .
ANALYTICA CHIMICA ACTA, 2003, 479 (02) :233-248
[2]   Study of mercury oxidation by a selective catalytic reduction catalyst in a pilot-scale slipstream reactor at a utility boiler burning bituminous coal [J].
Cao, Yan ;
Chen, Bobby ;
Wu, Jiang ;
Cui, Hong ;
Smith, John ;
Chen, Chi-Kuan ;
Chu, Paul ;
Pan, Wei-Ping .
ENERGY & FUELS, 2007, 21 (01) :145-156
[3]   Understanding mercury conversion in selective catalytic reduction (SCR) catalysts [J].
Eswaran, S ;
Stenger, HG .
ENERGY & FUELS, 2005, 19 (06) :2328-2334
[4]   The case for atmospheric mercury contamination in remote areas [J].
Fitzgerald, WF ;
Engstrom, DR ;
Mason, RP ;
Nater, EA .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1998, 32 (01) :1-7
[5]   Mercury transformations in coal combustion flue gas [J].
Galbreath, KC ;
Zygarlicke, CJ .
FUEL PROCESSING TECHNOLOGY, 2000, 65 :289-310
[6]   Development of a Cl-impregnated activated carbon for entrained-flow capture of elemental mercury [J].
Ghorishi, SB ;
Keeney, RM ;
Serre, SD ;
Gullett, BK ;
Jozewicz, WS .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2002, 36 (20) :4454-4459
[7]   Novel sorbents for mercury removal from flue gas [J].
Granite, EJ ;
Pennline, HW ;
Hargis, RA .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2000, 39 (04) :1020-1029
[8]   Behavior of mercury release during thermal decomposition of coals [J].
Guo, Shaoqing ;
Yang, Jianli ;
Liu, Zhenyu ;
Xiao, Yong .
KOREAN JOURNAL OF CHEMICAL ENGINEERING, 2009, 26 (02) :560-563
[9]   Mercury Oxidation over a Vanadia-based Selective Catalytic Reduction Catalyst [J].
He, Sheng ;
Zhou, Jinsong ;
Zhu, Yanqun ;
Luo, Zhongyang ;
Ni, Mingjiang ;
Cen, Kefa .
ENERGY & FUELS, 2009, 23 (1-2) :253-259
[10]   AN XPS AND UPS PHOTOEMISSION-STUDY OF HGO [J].
HUMBERT, P .
SOLID STATE COMMUNICATIONS, 1986, 60 (01) :21-24
1234