基于活性炭吸脱附测试的杜比宁吸附方程修正表达式
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

TU83

基金项目:


Modified Expression of Dubinin-Radushkevich Equation Based on Adsorption and Desorption Tests of Activated Carbon
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    现有研究证明杜比宁吸附方程(D-R方程)在高相对压力区 (2.59<[ln(p0/P)]2<10),存在较为明显的欠拟合问题(P为气体的平衡压力,p0为实验温度下的饱和蒸汽压).基于此提出了活性炭材料在2.59<[ln(p0/P)]2<10范围内的D-R方程的修正表达式,并通过活性炭吸脱附测试获取了3种活性炭在不同相对压力下的氮气吸附量,对实验数据进行分段拟合.拟合结果表明,在2.59<[ln(p0/P)]2<10范围,所提出的修正表达式拟合精度高于直接使用D-R方程.

    Abstract:

    Previous studies showed that Dubinin-Radushkevich equation (D-R equation) does not describe the microporous adsorption well in the partial region of 2.59<[ln(p0/P)]2<10 (P is the balance pressure of adsorbate, p0 is the saturated vapor pressure at the experiment temperature). A modified expression of D-R equation is proposed herein for activated carbon materials in the range of 2.59<[ln(p0/P)]2<10. The adsorption capacity of the three activated carbon adsorbents at different relative pressures was tested with adsorption and desorption experiments, and the experimental data were fitted using proposed equations and original D-R equation. Results showed that in the range of 2.59<[ln(p0/P)]2<10, the proposed equations can describe microporous adsorption more accurately than the original D-R formula.

    参考文献
    相似文献
    引证文献
引用本文

李振海,裘舒年,李姗,陈瑶.基于活性炭吸脱附测试的杜比宁吸附方程修正表达式[J].同济大学学报(自然科学版),2019,47(12):1779~1784

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2018-10-22
  • 最后修改日期:2019-10-17
  • 录用日期:2019-09-16
  • 在线发布日期: 2020-01-02
  • 出版日期: