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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.
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JOURNAL OF CHROMATOGRAPHY A
ISSN: 0021-9673
Year: 2017
Volume: 1510
Page: 25-32
4 . 1 0 0
JCR@2022
ESI Discipline: CHEMISTRY;
ESI HC Threshold:212
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 9
SCOPUS Cited Count: 9
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
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