Desorption behaviour of HF,HCFC-133a and HFC-134a on a catalyst supported on gamma-AlF3

Authors
Quan, H Ge, Z Li, Z Yin, C Zhong, K Hao, Z Li, H Ji, F
Citation
H. Quan et al., Desorption behaviour of HF,HCFC-133a and HFC-134a on a catalyst supported on gamma-AlF3, J THERM ANA, 55(1), 1999, pp. 213-220
Citations number
12
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
ISSN journal
13886150 → ACNP
Volume
55
Issue
1
Year of publication
1999
Pages
213 - 220
Database
ISI
SICI code
1388-6150(1999)55:1<213:DBOHAH>2.0.ZU;2-7
Abstract
The desorption behaviour (desorption temperature and extent of desorption) of HF,HCFC-133a (CF3CH2Cl) and HFC-134a (CF3H2F) on gamma-AlF3 or catalyst supported on gamma-AlF3 was studied using an adsorption apparatus and TG, D TA and DSC methods. On the basis of the re suits a reaction mechanism was p roposed for the preparation of HFC-134a. The gamma-AlF3 employed for prepar ing the catalyst was expected to be stable below 550 degrees C based on the crystalline phase transition temperature of gamma-AlF3.