Obtaining sorption materials based on alkali and alkaline-earth metal fluorides for separation of the azeotropic mixture UF6–HF

Soviet Atomic Energy - Tập 109 - Trang 197-201 - 2011
A. A. Fiskov1, A. Yu. Makaseev2
1Atomenergoproekt St. Petersburg Research and Design Institute (SPbAEP), St. Petersburg, Russia
2Seversk Technological Institute, National Nuclear Research University – Moscow Engineering-Physics Institute (STI NIYaU MIFI), Seversk, Russia

Tóm tắt

Methods of obtaining granular sorbents for catching and purifying volatile inorganic fluorides are examined. The results of optimizing the technology of granular lithium fluoride and approaches to obtaining pelleted barium and calcium fluorides are presented. The granules obtained gave capacity to 0.6 g HF/g sorbent while maintaining the initial structure. The initial destruction was negligible, the number of destroyed granules was the same after three sorption-desorption cycles.

Tài liệu tham khảo

E. G. Rakov, Chemistry and Technology of Inorganic Fluorides, MKhTI im. Mendeleeva, Moscow (1990). N. P. Galkin, V. A. Zaitsev, and M. B. Seregin, Catching and Reprocessing Fluorine-Containing Gases, Atomizdat, Moscow (1975). A. A. Opalovskii and T. D. Fedotova, “Physicochemical study of systems containing hydrogen fluoride and alkalimetal fluorides,” Izv. SO AN SSSR. Ser. Khim., No. 4, 32–36 (1968). V. S. Akishin, V. V. Lazarchuk, E. N. Malyi, et al., Patent 2211726 RF, MPK B01J 20/02, “Sorbent for extracting hydrogen fluoride from gases and a method for obtaining it,” Byull. Izobr. Polez. Modeli, No. 25, 7 (2003). A. A. Opalovskii and T. D. Fedotova, Hydrofluorides, Nauka, Novosibirsk (1973). D. Yang, Kinetics of the Decomposition of Solids, [Russian translation], Mir, Moscow (1969).