Effect of Ce and La on the activity of CuO/ZSM-5 and MnOx/ZSM-5 composites for elemental mercury removal at low temperature

被引：59
|
作者：
Liu, Dongjing [1 ]
Zhou, Weiguo [1 ]
Wu, Jiang [2 ]
机构：
[1] Tongji Univ, Coll Mech Engn, Shanghai 200092, Peoples R China
[2] Shanghai Univ Elect Power, Coll Energy & Mech Engn, Shanghai 200090, Peoples R China
来源：
FUEL | 2017年 / 194卷
关键词：
Mercury removal; Rare earth; ZSM-5; CuO; Mn2O3; COAL-GAS DESULFURIZATION; IRON-OXIDE SORBENTS; ACTIVATED CARBON; FLUE-GAS; CATALYTIC-OXIDATION; FUEL GAS; HG-0; REMOVAL; PHASE HG-0; ADSORPTION; PERFORMANCE;
D O I：
10.1016/j.fuel.2016.12.076
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
CuO-based and MnOx-based sorbents modified with Ce and La using sol-gel method, were employed for elemental mercury removal at 120-240 degrees C. The Hg-0 removal activity of Mn2O3/ZSM-5 can be significantly enhanced by doping 50 at.% Ce or 10 at.% La, the Hg-0 removal efficiency increased by 94% and 71%, respectively. The Hg removal ability of CuO/ZSM-5 subtly improved by addition of 50 at.% Ce or 10 at.% La, the Hg-0 removal efficiency ascended only by 6% and 18%, respectively. The XPS results revealed that Hg transformed to HgO, and CuO (or Mn2O3) was reduced to Cu2O (or Mn3O4), which is in agreement with Mars-Maessen mechanism. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：115 / 122
页数：8
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