Studies on the Non-isothermal Decomposition Kinetics of Vitamin B6
- VernacularTitle:维生素B6的热分解过程和非等温热分解动力学研究
- Author:
Donghua CHEN
;
Jian ZHANG
;
Wang ZOU
;
Wanjun TANG
- Publication Type:Journal Article
- From:
Journal of China Pharmaceutical University
2001;(3):203-205
- CountryChina
- Language:Chinese
-
Abstract:
AIM The purpose is to study the non-isothermal decomposition process and mechanics of vitamin B6. METHOD The TG technique was used to observe between 30～700℃. RESULTS The decomposition of vitamin B6 was performed by two stages. Vitamin B6 loses HCl at the first stage together with losing H2O. The kinetic equation obtained was dα/dt=A*e-E/RT*1/2(1-α)3; activation energy obtained was 325.27 kJ/mol; and preexponential factor A obtained was 7.22×1032/s as well. CONCLUSION Vitamin B6 is rather thermal stable, and it loses HCl together with losing H2O at temperature range of 173℃～271℃.
