Investigation of nickel chemical precipitation kinetics

Authors

DOI:

https://doi.org/10.15587/1729-4061.2016.59506

Keywords:

metals, nickel, reduction, chemical precipitation, hydrosol, kinetics, reaction rate, polyvinylpyrrolidone, hydrogels, composite

Abstract

The results of investigation of nickel hypophosphite reduction reaction kinetics in the bulk solution depending on the pH, temperature, oxidant content, nature and concentration of the activator, the presence of water-soluble polymer - polyvinylpyrrolidone are presented.

The main objective of the study was to investigate the kinetics and establish optimum conditions for nickel chemical precipitation in the bulk solution. It is found that the process of chemical precipitation of the metal in the alkalescent environment is characterized by the high rate and  small induction period at a temperature of 60–70 oС. The presence of polyvinylpyrrolidone in the solution affects the induction period duration and the reduction reaction rate. The nature of the polyvinylpyrrolidone effect depends strongly on the pH. It is proved that using preformed nickel hydrosols as the activator makes it possible to significantly shorten the induction period of the reduction reaction at low temperatures.

The results are used in the development of technology and substantiation of the process parameters of synthesis of composite metal-filled polyvinylpyrrolidone copolymers with (meth) acrylates and hydrogel materials on their basis by a combination of metal polymerization and reduction processes.

Author Biographies

Олександр Миколайович Гриценко, National University “Lvivska Polytekhnika” 12 S. Bandera str., Lviv, Ukraine, 79013

PhD, Associate professor

Department of chemical technology of plastic materials processing

Олег Володимирович Суберляк, National University “Lvivska Polytekhnika” 12 S. Bandera str., Lviv, Ukraine, 79013

Doctor of Technical Science, Professor, Head of department

Department of chemical technology of plastic materials processing

Володимир Степанович Моравський, National University “Lvivska Polytekhnika” 12 S. Bandera str., Lviv, Ukraine, 79013

PhD, Associate professor

Department of chemical technology of plastic materials processing

Анна Володимирівна Гайдук, National University “Lvivska Polytekhnika” 12 S. Bandera str., Lviv, Ukraine, 79013

Postgraduate student

Department of chemical technology of plastic materials processing

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Published

2016-02-21

How to Cite

Гриценко, О. М., Суберляк, О. В., Моравський, В. С., & Гайдук, А. В. (2016). Investigation of nickel chemical precipitation kinetics. Eastern-European Journal of Enterprise Technologies, 1(6(79), 26–31. https://doi.org/10.15587/1729-4061.2016.59506

Issue

Vol. 1 No. 6(79) (2016): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

License

Copyright (c) 2016 Олександр Миколайович Гриценко, Олег Володимирович Суберляк, Володимир Степанович Моравський, Анна Володимирівна Гайдук

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