Promoting effect of vanadium on CF2Cl2 destructive sorption over nanocrystalline mesoporous MgO

Abstract

The effect of vanadium present in nanocrystalline mesoporous VO _x-MgO aerogels on the destructive sorption of difluorodichloromethane was studied using tapered element oscillating microbalance (TEOM), synchronous thermal analyzer (STA) and mass-spectrometric analysis of the gas phase. Vanadium incorporation in the aerogels was found to increase the MgO conversion to MgF₂ and shorten the induction period of the solid-state reaction. The mechanisms of the CF₂Cl₂ reaction with pure and vanadium-modified nanocrystalline MgO aerogels based on the obtained data are analyzed. The obtained results suggest that the formation of nuclei related to the surface active sites is the rate-determining stage of the solid-state reaction.

Original language	English
Pages (from-to)	76-84
Number of pages	9
Journal	Microporous and Mesoporous Materials
Volume	175
DOIs	https://doi.org/10.1016/j.micromeso.2013.03.034
Publication status	Published - 2013
Externally published	Yes

Keywords

Aerogel
Destructive sorption
Induction period
Mesoporous VO/MgO
Solid-state reaction

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanics of Materials

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10.1016/j.micromeso.2013.03.034

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@article{14b5a045a6e948f9b3921e66fe12a73f,

title = "Promoting effect of vanadium on CF2Cl2 destructive sorption over nanocrystalline mesoporous MgO",

abstract = "The effect of vanadium present in nanocrystalline mesoporous VO x-MgO aerogels on the destructive sorption of difluorodichloromethane was studied using tapered element oscillating microbalance (TEOM), synchronous thermal analyzer (STA) and mass-spectrometric analysis of the gas phase. Vanadium incorporation in the aerogels was found to increase the MgO conversion to MgF2 and shorten the induction period of the solid-state reaction. The mechanisms of the CF2Cl2 reaction with pure and vanadium-modified nanocrystalline MgO aerogels based on the obtained data are analyzed. The obtained results suggest that the formation of nuclei related to the surface active sites is the rate-determining stage of the solid-state reaction.",

keywords = "Aerogel, Destructive sorption, Induction period, Mesoporous VO/MgO, Solid-state reaction",

author = "Ilyina, {Ekaterina V.} and Mishakov, {Ilya V.} and Vedyagin, {Aleksey A.} and Bedilo, {Alexander F.} and Klabunde, {Kenneth J.}",

year = "2013",

doi = "10.1016/j.micromeso.2013.03.034",

language = "English",

volume = "175",

pages = "76--84",

journal = "Microporous and Mesoporous Materials",

issn = "1387-1811",

publisher = "Elsevier",

}

TY - JOUR

T1 - Promoting effect of vanadium on CF2Cl2 destructive sorption over nanocrystalline mesoporous MgO

AU - Ilyina, Ekaterina V.

AU - Mishakov, Ilya V.

AU - Vedyagin, Aleksey A.

AU - Bedilo, Alexander F.

AU - Klabunde, Kenneth J.

PY - 2013

Y1 - 2013

N2 - The effect of vanadium present in nanocrystalline mesoporous VO x-MgO aerogels on the destructive sorption of difluorodichloromethane was studied using tapered element oscillating microbalance (TEOM), synchronous thermal analyzer (STA) and mass-spectrometric analysis of the gas phase. Vanadium incorporation in the aerogels was found to increase the MgO conversion to MgF2 and shorten the induction period of the solid-state reaction. The mechanisms of the CF2Cl2 reaction with pure and vanadium-modified nanocrystalline MgO aerogels based on the obtained data are analyzed. The obtained results suggest that the formation of nuclei related to the surface active sites is the rate-determining stage of the solid-state reaction.

AB - The effect of vanadium present in nanocrystalline mesoporous VO x-MgO aerogels on the destructive sorption of difluorodichloromethane was studied using tapered element oscillating microbalance (TEOM), synchronous thermal analyzer (STA) and mass-spectrometric analysis of the gas phase. Vanadium incorporation in the aerogels was found to increase the MgO conversion to MgF2 and shorten the induction period of the solid-state reaction. The mechanisms of the CF2Cl2 reaction with pure and vanadium-modified nanocrystalline MgO aerogels based on the obtained data are analyzed. The obtained results suggest that the formation of nuclei related to the surface active sites is the rate-determining stage of the solid-state reaction.

KW - Aerogel

KW - Destructive sorption

KW - Induction period

KW - Mesoporous VO/MgO

KW - Solid-state reaction

UR - http://www.scopus.com/inward/record.url?scp=84876471964&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84876471964&partnerID=8YFLogxK

U2 - 10.1016/j.micromeso.2013.03.034

DO - 10.1016/j.micromeso.2013.03.034

M3 - Article

AN - SCOPUS:84876471964

VL - 175

SP - 76

EP - 84

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

SN - 1387-1811

ER -

Promoting effect of vanadium on CF₂Cl₂ destructive sorption over nanocrystalline mesoporous MgO

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

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