Synthesis of alkali metal titanates through hydrothermal reactions

Authors

  • Валерий Павлович Шапорев National technical university «Kharkov polytechnic institute» 21, street of Frunze, Kharkov, Ukraine, 61002, Ukraine https://orcid.org/0000-0003-1652-4688
  • Инна Вячеславовна Питак National technical university «Kharkov polytechnic institute» 21, street of Frunze, Kharkov, Ukraine, 61002, Ukraine https://orcid.org/0000-0003-4935-8225
  • Алексей Валерьевич Шестопалов National technical university «Kharkov polytechnic institute» 21, street of Frunze, Kharkov, Ukraine, 61002, Ukraine https://orcid.org/0000-0001-6268-8638

DOI:

https://doi.org/10.15587/1729-4061.2014.26242

Keywords:

hydrothermal reaction, autoclave, whiskers, potassium hexatitanite, kinetic models

Abstract

Applying the hydrothermal reactions for synthesizing whiskers of alkali metal titanates is considered in the paper. Some results of our research in this field are presented. The main purpose of this research is to study the mechanisms of the hydrothermal synthesis process and to obtain kinetic models of whisker growth. The idea of the mechanisms of crystal synthesis is considered and the influence of pressure, temperature, degree of the autoclave filling and other process parameters is estimated. As a result of experimental studies, the possibility of synthesizing potassium titanate whiskers under hydrothermal conditions in obtaining high-quality fibrous crystal structure, corresponding to potassium hexatitanite, the maximum yield of which can be achieved by the degree of filling the reactor by 60% and a pressure of 50 MPa. Based on the studies of the process mechanisms the kinetic models are constructed. They can be used for analyzing the process and selecting the rational parameters of synthesizing potassium hexatitanite crystals. The results of theoretical and experimental studies allow estimating the measurements of the various process properties on the hydrothermal treatment and identifying the factors of controlling either the processes of batch mixture dissolution in the autoclave or the crystal growth processes, which can be applied in the development and design of reactors for performing hydrothermal reactions in obtaining whiskers.

Author Biographies

Валерий Павлович Шапорев, National technical university «Kharkov polytechnic institute» 21, street of Frunze, Kharkov, Ukraine, 61002

Professor

Department of chemical technique and industrial ecology

Инна Вячеславовна Питак, National technical university «Kharkov polytechnic institute» 21, street of Frunze, Kharkov, Ukraine, 61002

Candidate of engineering sciences, associate professor of department of chemical technique and industrial ecology

Алексей Валерьевич Шестопалов, National technical university «Kharkov polytechnic institute» 21, street of Frunze, Kharkov, Ukraine, 61002

Candidate of engineering sciences, associate professor of department of chemical technique and industrial ecology

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Published

2014-08-08

How to Cite

Шапорев, В. П., Питак, И. В., & Шестопалов, А. В. (2014). Synthesis of alkali metal titanates through hydrothermal reactions. Eastern-European Journal of Enterprise Technologies, 4(6(70), 35–43. https://doi.org/10.15587/1729-4061.2014.26242

Issue

Vol. 4 No. 6(70) (2014): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2014 Валерий Павлович Шапорев, Инна Вячеславовна Питак, Алексей Валерьевич Шестопалов

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