Effect of porous structure and surface functionality on the mercury capacity of a fly ash carbon and its activated sample

被引:93
作者
Maroto-Valer, MM
Zhang, YZ
Granite, EJ
Tang, Z
Pennline, HW
机构
[1] Penn State Univ, Energy Inst, University Pk, PA 16802 USA
[2] Penn State Univ, Dept Energy & Geoenvironm Engn, University Pk, PA 16802 USA
[3] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA
关键词
fly ash carbon; porosity; surface functionality; mercury capture;
D O I
10.1016/j.fuel.2004.07.005
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
The effect of porous structure and surface functionality on the mercury capacity of a fly ash carbon and its activated sample has been investigated. The samples were tested for mercury adsorption using a fixed-bed with a simulated flue gas. The activated fly ash carbon sample has lower mercury capacity than its precursor fly ash carbon (0.23 vs. 1.85 mg/g), although its surface area is around 15 times larger, 863 vs. 53 m(2)/g. It was found that oxygen functionality and the presence of halogen species on the surface of fly ash carbons may promote mercury adsorption, while the surface area does not seem to have a significant effect on their mercury capacity. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:105 / 108
页数:4
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