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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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温度对活性炭纤维吸附苯酚的热力学和动力学性能的影响
DOI: 10.3969/j.issn.1671-7627.2014.01.006, PP. 28-32
Keywords: 吸附等温线,活性炭纤维,苯酚
Abstract:
实验考察不同温度下活性炭纤维(acfs)对苯酚的静态吸附性能,利用langmuir、redlich-peterson吸附等温模型和准二级动力学模型计算苯酚在acfs上的动力学和热力学性能。结果表明:redlich-peterson吸附等温模型和准二级动力学模型能较好地描述吸附性能;升高温度,acfs的最大吸附容量qmax减小,动力学吸附速率常数k2变大,吸附过程的吉布斯自由能δg的绝对值减小,吸附过程的焓变δh、熵变δs和吸附活化能ea分别为-10.2kj/mol、-23.6j/(mol·k)和55.2kj/mol,吸附过程为物理吸附。
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