四氟硼酸锂的热分解动力学

J4 ›› 2009, Vol. 47 ›› Issue (6): 1323-1327.

四氟硼酸锂的热分解动力学

崔孝玲¹, 李世友¹, 乌志明², 周园², 雒和明¹

1. 兰州理工大学石油化工学院, 兰州 730050； 2. 中国科学院青海盐湖研究所, 西宁 810008

收稿日期:2009-03-13 出版日期:2009-11-26 发布日期:2010-01-07
通讯作者: 李世友 E-mail:sylilw@yahoo.com.cn.

Thermal Decomposition Kinetics of LiBF₄

CUI Xiaoling¹, LI Shiyou¹, WU Zhiming², ZHOU Yuan², LUO Heming¹

1. College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China;2. Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China

Received:2009-03-13 Online:2009-11-26 Published:2010-01-07
Contact: LI Shiyou E-mail:sylilw@yahoo.com.cn.

摘要/Abstract

摘要：

通过热重（TG）及微商热重曲线（DTG）分析技术研究LiBF₄的非等温和等温热分解情况. 结果表明, 两种情况下得到的表观活化能E_a与反应级数n的一致性均较好. 以等温热分解所得指前因子A和按碰撞理论计算LiBF₄的分子半径r, 所得结果与实验值相符, 表明LiBF₄的热分解反应基本符合碰撞理论模型, 同时也验证了ln A具有较高的可信度.

关键词: 四氟硼酸锂（LiBF₄）；热分解；非等温动力学；等温动力学；碰撞理论

Abstract:

Nonisothermal and isothermal decompositions of LiBF₄ were studied via TG-DTG method. Both the apparent activation energy E_a and the reaction order n got from both ways had good coherence. Furthermore,when the preexponential factor A got from isothermal decomposition was used to calculate the molecular radius by means of collision theory, the result is in good agreement with the test data. So the conclusion r that collision theory is suitable for LiBF₄’s thermal decomposition could be gotten. In addition, this conclusion could validate the high reliability of ln A.

Key words: lithium tetrafluoroborate (LiBF₄)； thermal decomposition； nonisothermal kinetics； isothermal kinetics； collision theory

中图分类号:

O643.12

崔孝玲, 李世友, 乌志明, 周园, 雒和明. 四氟硼酸锂的热分解动力学[J]. J4, 2009, 47(6): 1323-1327.

CUI Xiaoling, LI Shiyou, WU Zhiming, ZHOU Yuan, LUO Heming. Thermal Decomposition Kinetics of LiBF₄[J]. J4, 2009, 47(6): 1323-1327.