Synthesis and characterization of nanocrystalline M-Mg-O and carbon-coated MgO systems

Timofey Karnaukhov, Aleksey Vedyagin, Ilya Mishakov, Alexander Bedilo, Alexander Volodin

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

3 Citations (Scopus)

Abstract

Two different approaches to modify the structure and reaction ability of nanocrystalline MgO have been discussed. In the first case, a series of two-component x%MOx-MgO systems (M = Fe, Co and Ni, x = 1-45 wt.%) was synthesized via sol-gel technique. Aqueous solution of inorganic salt precursor was used as a hydrolyzing agent. Samples obtained were characterized by number of physicochemical methods (differential thermal analysis, X-ray diffraction analysis, lowtemperature adsorption, etc.). It was shown that presence of inorganic salt in magnesium hydroxide matrix shifts the temperature of decomposition of latter towards lower values. Structural and textural characteristics of MgO-based oxide systems were found to be strongly affected by the presence of additive and their concentration. Formation of joint phase was observed in the case of cobalt oxide only. Second way of MgO modification was represented by creating a controlled carbon coating over its surface via decomposition of C4H10at 400 °C. The obtained x%C/MgO (x = 1-10 wt.%) samples were shown to possess the improved reaction ability in destruction sorption of CF2Cl2as well as in catalytic dehydrochlorination of 1-chlorobutane in presence of water vapors.

Original languageEnglish
Title of host publicationMaterial Science and Engineering Technology VI - 6th ICMSET 2017
PublisherTrans Tech Publications Ltd
Pages157-161
Number of pages5
ISBN (Print)9783035712131
DOIs
Publication statusPublished - 1 Jan 2018
Event6th International Conference on Material Science and Engineering Technology, ICMSET 2017 - Seoul, Korea, Republic of
Duration: 20 Oct 201722 Oct 2017

Publication series

NameMaterials Science Forum
Volume917 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference6th International Conference on Material Science and Engineering Technology, ICMSET 2017
CountryKorea, Republic of
CitySeoul
Period20.10.201722.10.2017

Keywords

  • Carbon coating
  • Destructive sorption
  • Halogenated hydrocarbons
  • Nanocrystalline magnesium oxide
  • Sol-gel technique
  • Two-component oxides

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