NDLI: Polarity of an МСМ-41 adsorbent surface modified with methyl and phenyl groups based on data from gas chromatography

Content Provider	Springer Nature Link
Author	Sukhareva, D. A. Gus’kov, V. Yu. Karpov, S. I. Kudasheva, F. Kh. Roessner, F. Borodina, E. V.
Copyright Year	2016
Abstract	The polarity of an MCM-41 adsorbent surface and organosilylated composites based on it with grafted trimethylsilane and dimethylphenylsilane groups is studied via inverse gas chromatography at infinite dilution. The dispersion and specific components of the value proportional to the Helmholtz adsorption energy are calculated, and a comparative analysis of the surface polarity of MCM-41 and its modified analogs relative to the commercially available C-120 silica gel is performed. The electrostatic and donor–acceptor components of the specific Helmholtz adsorption energy are calculated through linear decomposition of the adsorption energy. It is established that MCM-41 is less polar than C-120. The modification of the initial adsorbent surface leads to a reduction in polarity, due mainly to the weakening of induction and orientation interactions. It is concluded that the surfaces of the modified samples retain the ability to form hydrogen bonds.
Starting Page	470
Ending Page	474
Page Count	5
File Format	PDF
ISSN	00360244
Journal	Russian Journal of Physical Chemistry
Volume Number	90
Issue Number	2
e-ISSN	1531863X
Language	English
Publisher	Pleiades Publishing
Publisher Date	2016-01-07
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	MCM-41 specific retention volume adsorption energy inverse gas chromatography polarity Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry

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