Synthesis of Oxide Materials by Hydrothermal Hydrolysis of Aluminum Chloride Hexahydrate Full article
| Conference |
37th International Conference and Exhibition of ICSOBA in cooperation with 25th “Aluminium of Siberia” Conference within XI International Congress & Exhibition “Non-Ferrous Metals and Minerals” 16-20 Sep 2019 , Красноярск |
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| Journal |
Travaux du Comite international pour l'etude des bauxites, de l'alumine et de l'aluminium
ISSN: 2518-332X , E-ISSN: 0350-7548 |
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| Output data | Year: 2019, Volume: 44, Number: 48, Pages: 401-406 Pages count : 6 | ||
| Tags | alumina production, hydrolysis, hydrothermal synthesis, bayerite, boehmite | ||
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| Affiliations |
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Funding (1)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0010 |
Abstract:
In the present work, the processes of aluminum oxyhydroxides synthesis by hydrothermal hydrolysis in water solutions and in solid phase are considered. The process studies were conducted using a batch type autoclave at temperatures from 443 to 503 K at a pressure of 1.6 -2.3 MPa with the variation of such parameters as temperature, pressure, residence time of the reaction mixture in the reactor, flow velocity of the displacing gas during hydrolysis; number of washes, time and rate of hydrothermal decomposition products centrifugation, time and temperature of
aluminium hydroxide drying. It is shown that Al-O-H product formed by hydrothermal hydrolysis of aluminum chloride hexahydrate AlCl3* 6 H2O, and urea jointly in water solutions is a highly dispersed (nano) γ-AlOOH (boehmite). Hydrothermal process of self-hydrolysis of aluminum chloride hexahydrate in solid phase with the use of crystalline water is lead to formation of bayerite (mainly) and aluminum oxychlorides with a total Cl content of not more than 4 %.
Cite:
Dobrynkin N.
, Batygina M.
, Noskov A.
Synthesis of Oxide Materials by Hydrothermal Hydrolysis of Aluminum Chloride Hexahydrate
Travaux du Comite international pour l'etude des bauxites, de l'alumine et de l'aluminium. 2019. V.44. N48. P.401-406.
Synthesis of Oxide Materials by Hydrothermal Hydrolysis of Aluminum Chloride Hexahydrate
Travaux du Comite international pour l'etude des bauxites, de l'alumine et de l'aluminium. 2019. V.44. N48. P.401-406.
Dates:
| Submitted: | Jul 11, 2019 |
| Accepted: | Jul 30, 2019 |
| Published print: | Sep 16, 2019 |
| Published online: | Sep 16, 2019 |
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