CAJ | 학술논문

目的：研究维生素B6的热分解过程及机理。方法：应用热重法研究维生素B6在30～700℃的热分解。结果：维生素B6的热分解分二步。第一步在脱HCl的同时伴随有分子间脱H2O，其动力学方程为：dα/dt=A*e-E/RT*1/2(1-α)3, 表观活化能E=325.27 kJ/mol, 指前因子A=7.22×1032/s。结论：维生素B6的热稳定性较好，在173℃～271℃脱去HCl的同时伴随二分子间脱水形成醚。
목적：연구유생소B6적열분해과정급궤리。방법：응용열중법연구유생소B6재30～700℃적열분해。결과：유생소B6적열분해분이보。제일보재탈HCl적동시반수유분자간탈H2O，기동역학방정위：dα/dt=A*e-E/RT*1/2(1-α)3, 표관활화능E=325.27 kJ/mol, 지전인자A=7.22×1032/s。결론：유생소B6적열은정성교호，재173℃～271℃탈거HCl적동시반수이분자간탈수형성미。
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℃.