发布时间：2017-11-07 来源：yz 浏览次数：545

标题：FeCl3-modified Co-Ce oxides catalysts for mercury removal from coal-fired flue gas作者： Li, HH (Li, Honghu); Wang, SK (Wang, Shengkai); Wang, X (Wang, Xu); Wang, Y (Wang, Yuan); Tang, NA (Tang, Nian); Pan, SW (Pan, Siwei); Hu, JJ (Hu, Jiangjun)

来源出版物：CHEMICAL PAPERS 卷：71 期：12 页码: 2545-2555 DOI：10.1007/s11696-017-0250-4 出版年： DEC 2017

摘要：FeCl3-modified Co-Ce oxides catalysts were prepared by a glycine-nitrate combustion method followed by FeCl3 impregnation, and Hg-0 removal efficiencies of the obtained samples were investigated in a laboratory-scale fixed-bed system. Effect of factors (including FeCl3 loading value, reaction temperature and flue gas compositions) on mercury removal over FeCl3-modified Co-Ce oxides catalyst and its co-benefit of NO conversion were examined. Results showed that the FeCl3-modified Co-Ce oxides catalysts presented high mercury removal activities below 300 A degrees C in the absence of HCl. The 8% FeCl3-CC could remove > 90% Hg-0 at optimum temperature (150 A degrees C) in N-2 and achieve a Hg-0 removal efficiency of about 86% and a simultaneous NO conversion efficiency of about 48.5% at 250 A degrees C in the N-2 + O-2 atmosphere. NO would slightly suppress the mercury removal but significantly improve it when NO was added together with O-2. SO2 exhibited an obvious negative effect on the removal of mercury, but H2O slightly inhibited it. This inhibition could be attributed to the competitive adsorption. The characterization results (BET, XRD, SEM, XPS and TG) demonstrated that FeCl3 was successfully introduced to the Co-Ce oxides and manifested the formation of Co3O4-CeO2 composites. XPS and Hg-TPD results indicated that both active Cl species and oxygen species contributed to the oxidation removal of elemental mercury over FeCl3-modified Co-Ce oxides, which followed the Mars-Maessen mechanism.

入藏号：WOS:000413301200022

文献类型：Article

语种：English

作者关键词：FeCl3 modification; Co-Ce oxides; Mercury removal; Flue gas

扩展关键词： MANGANESE OXIDE/TITANIA MATERIALS; GASEOUS ELEMENTAL MERCURY; CUPRIC CHLORIDE; LOW-TEMPERATURE; PHASE MERCURY; NO OXIDATION; SCR CATALYST; HG OXIDATION; COMPOSITE; CARBON

通讯作者地址：Hu, JJ (reprint author), Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.

电子邮件地址：jjhu1963@outlook.com

地址：

[Li, Honghu; Wang, Shengkai; Wang, Xu; Wang, Yuan; Hu, Jiangjun] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.

[Tang, Nian; Pan, Siwei] Inst Guangdong Power Grid Co, Dept Elect Power Res, Environm Protect, Guangzhou 510080, Guangdong, Peoples R China.

ISSN：0366-6352

eISSN: 1336-9075

影响因子：1.258