A novel method for the synthesis of well-crystallized beta-AlF3 with high surface area derived from gamma-Al2O3

作者:Jia Wen Zhi; Lu Ji Qing; Chen Ping; Wang Yue Juan; Luo Meng Fei*
来源:Journal of Materials Chemistry, 2011, 21(25): 8987-8990.
DOI:10.1039/c1jm11630d

摘要

Well-crystallized beta-AlF3 with high surface area was synthesized by a carbon template method. Porous gamma-Al2O3 was filled with carbon and transformed into AlF3 by fluorination. After removing the carbon template by thermal combustion, the resulting beta-AlF3 had a surface area of 114 m(2) g(-1). Temperatures for fluorination and thermal combustion were crucial for the phase composition of the resulting sample. The high surface area beta-AlF3 was very active for dismutation of CF2Cl2 due to its large amount of surface acid sites.