燃料化学学报2011，Vol.39Issue(6)：471-475,5.
V2O5/AC捕获的Hg在再生过程中的释放行为研究
Release behavior of Hg captured on V2O5/AC during the regeneration process
摘要
Abstract
The release behavior of Hg captured on V2O5/AC during regeneration and temperature programmed desorption (TPD) processes was studied. The Hg° capture capability of the regenerated V2O5/AC was also tested. It was found that 81% or 94% of Hg captured on V2O5/AC can be released during the thermal (Ar, 400 ℃) or NH3(NH3/Ar, 300 ℃) regeneration processes. The released Hg is mainly in the form of Hg° due to the reduction activity of carbon in AC. The TPD-AFS profile reveals that the release behavior of Hg under Ar and NH3/Ar atmospheres is different. NH3 in the atmosphere improved the release of Hg by lowering the highest release temperature to 300 ℃. Under pure Ar atmosphere the release of Hg still can be observed above 400 ℃. It caused the difference in Hg release ratio respect with the two regeneration processes tested. However, when NH3 concentration increases from 1% to 5% or higher the Hg release ratio is unchanged. If the higher regeneration temperature was used the difference in Hg release ratio during the two regeneration processes should vanish. Regeneration methods have slight effects on Hg° capture capability on V2O5/AC. The Hg0 capture capability of regenerated V2O5/AC under the two processes is similar, which is lower than that of the fresh V2O5/AC but still much higher than that of AC.关键词
V2O5/AC/再生/汞/释放Key words
V2O5/AC/ regeneration/ mercury/ release分类
资源环境引用本文复制引用
王钧伟,杨建丽,刘振宇..V2O5/AC捕获的Hg在再生过程中的释放行为研究[J].燃料化学学报,2011,39(6):471-475,5.基金项目
国家自然科学基金(20736001) （20736001）
国家重点基础研究发展规划(973计划，2010CB227003)。 （973计划，2010CB227003）
