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作者:

Chen, Sha (Chen, Sha.) (学者:陈莎) | Li, Xiao-Xin (Li, Xiao-Xin.) | Shu, Lun (Shu, Lun.) | Somsundaran, P. (Somsundaran, P..) | Li, Jian-Rong (Li, Jian-Rong.) (学者:李建荣)

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摘要:

The baseline separation of divinylbenzene (DVB) and ethylvinylbenzene (EVB) isomers was achieved using HPLC with MIL-53(Fe) and MIL-100(Fe) packed columns respectively when hexane/dichloromethane (100:0) used as mobile phase, at flow rate of 0.5 mLmin(-1), room temperature, and monitored with a UV detector at 254nm. The two Fe-based MIls packed columns showed different separated performances, analytes had short retention time on MIL-100(Fe) compared to MIL-53(Fe), but selectivity of DVB isomers (m-DVB and p-DVB) was lower, which was mainly due to the differences of the pore size and structure of MILs. Moreover, the results of calculated thermodynamic parameters showed that the separation of DVB and EVB isomers was not only controlled by enthalpy change (Delta H), but also controlled by entropy change (Delta S). The head-to-tail stacking was the main reason for the separation according to the mechanism of the DVB and EVB isomers on Fe-based MILs packed columns. (C) 2017 Published by Elsevier B.V.

关键词:

Divinylbenzene HPLC separation Isomer separation Metal-organic framework Stationary phase

作者机构:

  • [ 1 ] [Chen, Sha]Beijing Univ Technol, Coll Environm & Energy Engn, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China
  • [ 2 ] [Li, Xiao-Xin]Beijing Univ Technol, Coll Environm & Energy Engn, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China
  • [ 3 ] [Shu, Lun]Beijing Univ Technol, Coll Environm & Energy Engn, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China
  • [ 4 ] [Shu, Lun]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 5 ] [Li, Jian-Rong]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 6 ] [Shu, Lun]Beijing Univ Technol, Dept Chem & Chem Engn, Coll Environm & Energy Engn, Beijing 100124, Peoples R China
  • [ 7 ] [Li, Jian-Rong]Beijing Univ Technol, Dept Chem & Chem Engn, Coll Environm & Energy Engn, Beijing 100124, Peoples R China
  • [ 8 ] [Somsundaran, P.]Columbia Univ, Earth & Environm Engn Dept, New York, NY 10027 USA

通讯作者信息:

  • 陈莎

    [Chen, Sha]Beijing Univ Technol, Coll Environm & Energy Engn, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China

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来源 :

JOURNAL OF CHROMATOGRAPHY A

ISSN: 0021-9673

年份: 2017

卷: 1510

页码: 25-32

4 . 1 0 0

JCR@2022

ESI学科: CHEMISTRY;

ESI高被引阀值:127

中科院分区:2

被引次数:

WoS核心集被引频次: 8

SCOPUS被引频次: 8

ESI高被引论文在榜: 0 展开所有

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