Decomposition mechanisms and non-isothermal kinetics of LiHC_2O_4·H_2O

• 来源期刊: 稀有金属(英文版)
• 学科: 化学
• 年，卷（期）: 2012,（6）
• 页码范围: 615-620
• 页数: 6页
• 分类号: O614.111
• 语种: 中文

摘要

The thermal decomposition process of LiHC2O4·H2O from 30 to 600 ℃ was investigated by the thermogravimetric and differential scanning calorimetry (TG-DSC). The phases decomposited at different temperature were characterized by X-ray diffraction (XRD), which indicated the decompositions at 150, 170, and 420℃, relating to LiHC2O4, Li2C2O4, Li2C2O4, and Li2CO3, respectively. Reaction mechanisms in the whole sintering process were determined, and the model fitting kinetic approaches were applied to data for non-isothermal thermal decomposition of LiHC2O4?H2O; finally, the kinetic parameters of each reaction were also calculated herein.