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化工学报  2015 

活性焦孔结构演变规律及对脱硫性能的影响

DOI: 10.11949/j.issn.0438-1157.20141219, PP. 1126-1132

Keywords: 活性焦,活化,孔结构,吸附性能

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Abstract:

采用气体活化法制备活性焦,通过控制温度和烧失率来控制孔结构生成过程,制取具有特定孔结构的活性焦。采用N2吸附法对样品的孔结构进行表征,并在固定床实验系统上对不同样品的脱硫性能进行测试研究。研究发现:活性焦制备过程中,低温活化有利于活性焦微孔结构的形成和脱硫性能的提高,微孔是活性焦脱硫反应发生的主要场所,中孔和大孔作为分子扩散通道并具有存储H2SO4的作用,微孔比表面积可以作为判断活性焦脱硫性能的关键指标。

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