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LIGHT METALS, CARBON MATERIALS
ArticleName Phase composition of aluminium hydroxides and its calculation based on thermal analysis data
DOI 10.17580/tsm.2023.05.05
ArticleAuthor Spetsov E. A., Artyushevskiy D. I., Konoplin R. R., Sizyakov V. M.
ArticleAuthorData

Saint Petersburg Mining University, Saint Petersburg, Russia:

E. A. Spetsov, Section Leader at the Research Centre for the Problems of Processing Mineral and Man-Made Resources, Candidateof Technical Sciences, e-mail: spessov@yandex.by
D. I. Artyushevskiy, Engineer at the Research Centre for the Problems of Processing Mineral and Man-Made Resources, e-mail: dmitriylyazga@gmail.com
R. R. Konoplin, Research Fellow at the Research Centre for the Problems of Processing Mineral and Man-Made Resources, e-mail: rostislav.konoplin1@gmail.com
V. M. Sizyakov, Research Supervisor at the Research Centre for the Problems of Processing Mineral and Man-Made Resources, Doctor of Technical Sciences, Professor, e-mail: sizyakov_vm@pers.spmi.ru

Abstract

This paper describes the results of thermal analysis of aluminium hydroxides that are most commonly used in the production of alumina and catalyst supports. The aluminium hydroxides contained an amorphous phase, boehmite, bayerite, pseudoboehmite, and gibbsite. Analysis of the temperature ranges of phase transformations was based on thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The proposed optimized graphical method for thermogram processing expands the range of parameters determined in aluminum hydroxide samples. The results of the conducted analytical study provide a more accurate ground for analyzing not only the crystalline phases but also the amorphous phase in the studied samples, as well as the excess structural water, ammonium nitrate and humidity. Thermal decomposition of aluminum hydroxide powder into oxides followed by reconstruction of the latter in an aqueous solution of (NH4)2CO3 leads to their selective reaction with the amorphous phase Al2O3 and the formation of NH4Al(OH)2CO3. Such sample preparation technique led to better accuracy when determining the amorphous phase in the samples by means of thermal analysis. Calibration thermograms were obtained by introducing known amounts of ammonium nitrate into the concentrated phase of microcrystalline boehmite through wet impregnation. Having processed them, the authors were able to propose a method for calculating the concentration of burning impurities in aluminium hydroxides. This research was carried out in the laboratory facilities provided by SPS Eurochim Ltd. from Saint Petersburg, Russia.

The authors would like to thank professor Arkady Dykman, CEO of SPS Eurochim Ltd., Saint Petersburg, Russia, for providing laboratory equipment and materials for sample preparation.

keywords Thermal analysis, aluminium hydroxide, burning impurities, phase composition, boehmite, bayerite, gibbsite
References

1. Perego C., Villa P. Catalyst preparation methods. Catalysis Today. 1997. Vol. 34, No. 3-4. pp. 281–305.
2. Danilevich V. V., Klimov O. V., Nadeina K. A., Gerasimov E. et al. Novel eco-friendly method for preparation of mesoporous alumina from the product of rapid thermal treatment of gibbsite. Superlattices Microstructure. 2018. Vol. 120. pp. 148–160.
3. Misra C. Industrial alumina chemicals. Analytical Chemistry. 1987. Vol. 59, No. 10. pp. 706A.
4. Smyshlyaeva K. I., Rudko V., Povarov V. G., Shaidulina A. A. et al. Influence of asphaltenes on the low-sulphur residual marine fuels’ stability. Journal of Marine Science and Engineering. 2021. Vol. 9, No. 11. p. 1235.
5. Kudinova A. A., Poltoratckaya M. E., Gabdulkhakov R. R., Litvinova T. E. et al. Parameters influence establishment of the petroleum coke genesis on the structure and properties of a highly porous carbon material obtained by activation of KOH. Journal of Porous Materials. 2022. Vol. 29, No. 5. pp. 1599–1616.
6. Gabdulkhakov R. R., Rudko V. A., Pyagay I. N. Methods for modifying needle coke raw materials by introducing additives of various origin (review). Fuel. 2022. Vol. 310. p. 122265.
7. Gabdulkhakov R. R., Rudko V. A., Povarov V. G., Ugolkov V. L. et al. Technology of petroleum needle coke production in processing of decantoil with the use of polystyrene as a polymeric mesogen additive. ACS Omega. 2021. Vol. 6, No. 30. pp. 19995–20005.
8. Leofanti G., Tozzola G., Padovan M., Petrini G. et al. Catalyst characterization: characterization techniques. Catalysis Today. 1997. Vol. 34, No. 3-4. pp. 307–327.
9. Boer J., Linsen B. G., Fortuin J. M. H. Physical and chemical aspects of adsorbents and catalysts. London, 1970. 650 p.
10. Wagner M. Thermal analysis in practice. Munchen : Carl Hanser Verlag GmbH & Co. KG, 2017. 349 p.
11. Tsukada T., Segava H., Yasumori A., Okada K. Crystallinity of boehmite and its effect on the phase transition temperature of alumina. Journal of Materials Chemistry. 1999. Vol. 9, No. 2. pp. 549–553.
12. Okada K., Nagashima T., Kameshima Y., Yasumori A. et al. Relationship between formation conditions, properties, and crystallite size of boehmite. Journal of Colloid and Interface Science. 2002. Vol. 253, No. 2. pp. 308–314.
13. Sato T. Preparation and characterization of aluminium hydroxides and aluminas. USA : Litavran Literature, 2017. 300 p.
14. Denigres Filho R. W. N., Rocha G. A., Vieira-Coelho A. Synthesis and characterization of boehmites obtained from gibbsite in presence of different environments. Materials Research. 2016. Vol. 19, No. 3. pp. 659–668.
15. Brichkin V. N., Novikov N. A., Besedin A. A., Gordyushenkov E. E. Processes of chemical deposit crystallization. Journal of Mining Institute. 2011. Vol. 192. p. 15.
16. Golubev V. O., Litvinova T. E. Dynamic simulation of industrial-scale gibbsite crystallization circuit. Journal of Mining Institute. 2021. Vol. 247. pp. 88–101.
17. Sizyakov V. M., Voropanova L. A. Thermodynamic analysis of aluminium hydroxide calcination at alumina production. Journal of Mining Institute. 2013. Vol. 202. p. 35.
18. Mathieu Y., Lebeau B., Valtchev V. Control of the morphology and particle size of boehmite nanoparticles synthesized under hydrothermal conditions. Langmuir. 2007. Vol. 23, No. 18. pp. 9435–9442.
19. Svakhina Y. A., Titova M. E., Pyagay I. N. Products of apatite-nepheline ore processing in the synthesis of low-modulus zeolites. Indonesian Journal of Science and Technology. 2023. Vol. 8, No. 1. pp. 49–64.
20. Shefer K. I., Cherepanova S. V., Moroz E. M., Gerasimov E. Yu. et al. Features of the real structure of pseudoboehmites: violations of the structure and layer packing caused by crystallization water. Journal of Structural Chemistry. 2010. Vol. 51, No. 1. pp. 132–141.
21. Baker B. Water content of pseudoboehmite: a new model for its structure. Journal of Catalysis. 1974. Vol. 33, No. 2. pp. 265–278.
22. Tagandurdyeva N., Naraev V. N., Postnov A. Yu., Maltseva N. V. Aluminium hydroxide – bayerite obtained by precipitation. Bulletin of the Saint Petersburg State Institute of Technology (Technical University). 2020. Vol. 53. pp. 17–22.
23. Mukhamedyarova A., Nesterova O. V., Boretsky K. S., Skibina J. D. et al. Influence of the obtaining method on the properties of amorphous aluminum compounds. Coatings. 2019. Vol. 9, No. 1. p. 41.
24. Bersh A. V., Ivanov Yu. L., Mazalov Yu. A., Kormanova S. I. et al. Method for boehmite and hydrogen preparation. Patent RF, No. 2363659. Applied: 18.12.2007. Published: 10.08.2009.
25. Ram S., Singh T. B., Srikant S. Thermal desorption process of water in amorphous AlO(OH)αH2O fibres prepared by an electrochemical method. Materials Transactions, JIM. 1998. Vol. 39, No. 4. pp. 485–491.
26. Mukhamedyarova A. N., Gareev B. I., Nurgaliev D. K., Aliev F. A. et al. A review on the role of amorphous aluminum compounds in catalysis: avenues of investigation and potential application in petrochemistry and oil refining. Processes. 2021. Vol. 9, No. 10. p. 1811.
27. Myronyuk I. F., Mandzyuk V. I., Sachko V. M., Gunko V. M. Structural and morphological features of disperse alumina synthesized using aluminum nitrate nonahydrate. Nanoscale Research Letters. 2016. Vol. 11, No. 1. p. 153.
28. Pyagai I., Zubkova O., Babykin R. et al. Influence of impurities on the process of obtaining calcium carbonate during the processing of phosphogypsum. Materials. 2022. Vol. 15, No. 12. p. 4335.
29. Stoica G., Groen J. C., Abello S., Manchanda R. et al. Reconstruction of dawsonite by alumina carbonation in (NH4)2CO3: Requisites and mechanism. Chemistry of Materials. 2008. Vol. 20, No. 12. pp. 3973–3982.
30. Stoica G., Pérez-Ramírez J. Reforming dawsonite by memory effect of AACH-derived aluminas. Chemistry of Materials. 2007. Vol. 19, No. 19. pp. 4783–4790.

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