Some Peculiarities of Zirconium Tungstate Synthesis by Thermal Decomposition of Hydrothermal Precursors | Sciact - CRIS-system of Boreskov Institute of Catalysis

Some Peculiarities of Zirconium Tungstate Synthesis by Thermal Decomposition of Hydrothermal Precursors Full article

Journal

Thermochimica Acta
ISSN: 0040-6031 , E-ISSN: 1872-762X

Output data

Year: 2014, Volume: 597, Pages: 19-26 Pages count : 8 DOI: 10.1016/j.tca.2014.10.003

Tags

High-temperature diffraction, Hydrothermal synthesis, Negative thermal expansion coefficient, Thermal decomposition, Zirconium tungstate

Authors

Gubanov Alexander I. ^1,2 , Dedova Elena S. ^3,5 , Plyusnin Pavel E. ^1,2 , Filatov Eugeny Y. ^1,2 , Kardash Tatyana Y. ⁴ , Korenev Sergey V. ^1,2 , Kulkov Sergey N. ^3,5

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Akad. Lavrentiev Prospekt 3, 630090 Novosibirsk, Russian Federation
2	Novosibirsk State University, Pirogova str. 2, 630090 Novosibirsk, Russian Federation
3	Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences, pr. Akademicheskii 2/4, 634021 Tomsk, Russian Federation
4	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Akad. Lavrentiev Prospekt 5, 630090 Novosibirsk, Russian Federation
5	Tomsk Polytechnic University, Lenin Avenue 30, 634050 Tomsk, Russian Federation

Funding (5)

1	National Research Tomsk State University	14.575.21.0040
2	Russian Foundation for Basic Research	14-33-50213
3	The Ministry of Education and Science of the Russian Federation
4	Council for Grants of the President of the Russian Federation	МК-1934.2013.3
5	Council for Grants of the President of the Russian Federation	МК-5681.2014.8

This article discusses the some peculiarities of the synthesis ZrW2O8 (1) using thermal decomposition of the precursor ZrW2O7((OH)1.5,Cl0.5)•2H2O (2), prepared by hydrothermal method. On hydrothermal synthesis of 2 the optimal concentration of hydrochloric acid in the reaction mixture is about 2.5М. TG approach to determination of the chemical composition of the precursor was suggested. It has been found out that the precursor for the synthesis of zirconium tungstate has chemical formula 2. Thermal decomposition of the precursor 2 begins are 200°С and affords an amorphous intermediate, which crystallizes into cubic single-phase 1 above 550°С with an exoeffect. The temperature of the beginning of the transition from amorphous to the crystalline state is 350 ± 25 °С.

Gubanov A.I. , Dedova E.S. , Plyusnin P.E. , Filatov E.Y. , Kardash T.Y. , Korenev S.V. , Kulkov S.N.
Some Peculiarities of Zirconium Tungstate Synthesis by Thermal Decomposition of Hydrothermal Precursors
Thermochimica Acta. 2014. V.597. P.19-26. DOI: 10.1016/j.tca.2014.10.003 WOS Scopus РИНЦ AN OpenAlex

Submitted:	May 29, 2014
Accepted:	Oct 4, 2014
Published online:	Oct 8, 2014
Published print:	Dec 10, 2014

Web of science:	WOS:000347132700003
Scopus:	2-s2.0-84908257818
Elibrary:	23995475
Chemical Abstracts:	2014:1737437
OpenAlex:	W2102578886

DB	Citing
Web of science	13
Scopus	14
Elibrary	14
OpenAlex	14