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H3 PO4二次活化椰壳活性炭吸附低浓度乙烷的应用条件研究

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Indexed by:期刊论文

Date of Publication:2015-05-04

Journal:低温与特气

Issue:2

Page Number:25-30

ISSN No.:1007-7804

Key Words:活性炭;H3 PO4;二次活化;乙烷;吸附

Abstract:采用H3 PO4浸渍法对椰壳活性炭进行二次活化,并探究了活化后样品对低浓度乙烷的吸附性能。通过正交实验和单因素实验分析考察了浸渍条件和活化条件对活性炭样品吸附乙烷性能的影响,针对乙烷吸附性能得出二次活化最佳应用条件。结果表明:样品对乙烷吸附量随活化温度升高而降低,随浸渍率、活化时间、浸渍时间增大呈先增大后降低趋势。当活化温度为300℃,浸渍率为0.8,活化时间为120 min,浸渍时间为180 min时,样品对乙烷的吸附性能最佳,穿透吸附量达246.42 ugg-1,较未处理椰壳活性炭提高了129%。

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