Kinetics and Mechanism of BaLaCuS3 Oxidation

Author:

Azarapin Nikita O.1ORCID,Khritokhin Nikolay A.1ORCID,Atuchin Victor V.2345ORCID,Gubin Alexey A.6,Molokeev Maxim S.789ORCID,Mukherjee Shaibal101112,Andreev Oleg V.113

Affiliation:

1. Department of Inorganic and Physical Chemistry, Tyumen State University, Tyumen 625003, Russia

2. Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia

3. Research and Development Department, Kemerovo State University, Kemerovo 650000, Russia

4. Department of Industrial Machinery Design, Novosibirsk State Technical University, Novosibirsk 630073, Russia

5. R&D Center “Advanced Electronic Technologies”, Tomsk State University, Tomsk 634034, Russia

6. Laboratory for Nanomaterials and Nanoelectronics, Center for Nature-Inspired Engineering, Technology Park, Tyumen State University, Tyumen 625003, Russia

7. Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia

8. Laboratory of Theory and Optimization of Chemical and Technological Processes, University of Tyumen, Tyumen 625003, Russia

9. Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk 660041, Russia

10. Hybrid Nanodevice Research Group (HNRG), Department of Electrical Engineering, Indian Institute of Technology Indore, Indore 453552, India

11. Centre for Advanced Electronics (CAE), Indian Institute of Technology Indore, Indore 453552, India

12. School of Engineering, RMIT University, Melbourne, VIC 3001, Australia

13. Institute of Solid State Chemistry, UB RAS, Yekaterinburg 620990, Russia

Abstract

The oxidation reactions of BaLaCuS3 in the artificial air atmosphere were studied at different heating rates in the temperature range of 50–1200 °C. The oxidation stages were determined by DSC-TG, XRD and IR–vis methods. The kinetic characteristics of the proceeding reactions were obtained with the use of the Kissinger model in a linearized form. Compound BaLaCuS3 was stable in the air up to 280 °C. Upon further heating up to 1200 °C, this complex sulfide underwent three main oxidation stages. The first stage is the formation of BaSO4 and CuLaS2. The second stage is the oxidation of CuLaS2 to La2O2SO4 and copper oxides. The third stage is the destruction of La2O2SO4. The final result of the high-temperature treatment in the artificial air atmosphere was a mixture of barium sulfate, copper (II) oxide and La2CuO4. The mechanism and stages of BaLaCuS3 oxidation and further interactions of the components were discussed.

Funder

Ministry of Science and Higher Education of the Russian Federation

Tyumen Oblast Government

Publisher

MDPI AG

Subject

Inorganic Chemistry,Condensed Matter Physics,General Materials Science,General Chemical Engineering

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