Surface characterization of palladium-alumina sorbents for high-temperature capture of mercury and arsenic from fuel gas

FUEL

卷:89

Article; Proceedings Paper

Baltrus, John P.¹  Granite, Evan J.¹  Pennline, Henry W.¹  Stanko, Dennis¹  Hamilton, Hugh²  Rowsell, Liz²  Poulston, Stephen²  Smith, Andrew²  Chu, Wilson³ 

[1] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA

[2] Johnson Matthey Plc, Ctr Technol, Reading RG4 9NH, Berks, England

[3] Johnson Matthey, Malvern, PA 19355 USA

关键词: Mercury;    Arsenic;    Surface characterization;    Fuel gas;    Sorbent;   

DOI  :  10.1016/j.fuel.2009.09.030

来源: Elsevier

【 摘 要 】

Coal gasification with subsequent cleanup of the resulting fuel gas is a way to reduce the impact of mercury and arsenic in the environment during power generation and on downstream catalytic processes in chemical production. The interactions of mercury and arsenic with Pd/Al(2)O(3) model thin film sorbents and Pd/Al(2)O(3) powders have been studied to determine the relative affinities of palladium for mercury and arsenic, and how they are affected by temperature and the presence of hydrogen sulfide in the fuel gas. The implications of the results on strategies for capturing the toxic metals using a sorbent bed are discussed. Published by Elsevier Ltd.

【 授权许可】

Free