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Formation of Zn- and Si-Based Oxide Systems: Analysis of Temperature Dependence of the Energy State Full article

Journal Catalysis for Sustainable Energy
ISSN: 2084-6819
Output data Year: 2018, Volume: 5, Number: 1, Pages: 28-33 Pages count : 6 DOI: 10.1515/cse-2018-0004
Tags thermal decomposition; zinc oxide; silica; activation energy
Authors Brichkov Anton S. 1 , Kuznetsova Svetlana A. 1 , Mongush Evgeniya A. 1 , Brichkova Viktoriya U. 1 , Zabolotskaya Anastasiya V. 1 , Glazneva Tatiana S. 2,3
Affiliations
1 National Research Tomsk State University, Pr. Lenina, 36, Tomsk, Russia
2 Boreskov Institute of Catalysis, Pr. Ak. Lavrentieva, 5, Novosibirsk, Russia
3 Novosibirsk State University, Pirogova str., 2, Novosibirsk, Russia

Funding (1)

1 The Ministry of Education and Science of the Russian Federation

Abstract: This article presents the results of the thermal analysis of dried colloidal solutions based on zinc nitrate with changes in tetraethoxysilane (TEOS) content. The main stages of the thermal decomposition of the dried sols were established and the activation energies of each stage were determined based on the results of thermogravimetric measurements using the Erofeev-Kolmogorov approach. For each stage, the products of thermal destruction in the gas phase were determined by mass-spectrometry. It was shown that the chemical decomposition in all samples started at a temperature above 200°C, and the temperature of zinc hydroxonitrate decomposition increased with increasing TEOS content in the ash, while the activation energy of that process decreased. X-ray diffraction analysis revealed that the thermal decomposition of dried sols at 600°C resulted in the formation of mixtures of ZnO in hexagonal syngony with amorphous SiO2 in amounts from 10 to 50 wt%.
Cite: Brichkov A.S. , Kuznetsova S.A. , Mongush E.A. , Brichkova V.U. , Zabolotskaya A.V. , Glazneva T.S.
Formation of Zn- and Si-Based Oxide Systems: Analysis of Temperature Dependence of the Energy State
Catalysis for Sustainable Energy. 2018. V.5. N1. P.28-33. DOI: 10.1515/cse-2018-0004 РИНЦ AN OpenAlex
Files: Full text from publisher
Dates:
Submitted: Aug 27, 2018
Accepted: Sep 5, 2018
Published online: Oct 31, 2018
Published print: Nov 16, 2018
Identifiers:
Elibrary: 44406521
Chemical Abstracts: 2019:2120223
OpenAlex: W2900637344
Citing: Пока нет цитирований
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