吉林大学学报(理学版)
吉林大學學報(理學版)
길림대학학보(이학판)
JOURNAL OF JILIN UNIVERSITY(SCIENCE EDITION)
2009年
6期
1323-1327
,共5页
崔孝玲%李世友%乌志明%周园%雒和明
崔孝玲%李世友%烏誌明%週園%雒和明
최효령%리세우%오지명%주완%락화명
四氟硼酸锂(LiBF_4)%热分解%非等温动力学%等温动力学%碰撞理论
四氟硼痠鋰(LiBF_4)%熱分解%非等溫動力學%等溫動力學%踫撞理論
사불붕산리(LiBF_4)%열분해%비등온동역학%등온동역학%팽당이론
lithium tetrafluoroborate ( LiBF_4 )%thermal decomposition%non-isothermal kinetics%isothermal kinetics%collision theory
通过热重(TG)及微商热重曲线(DTG)分析技术研究LiBF_4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LiBF_4的分子半径r, 所得结果与实验值相符, 表明LiBF_4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.
通過熱重(TG)及微商熱重麯線(DTG)分析技術研究LiBF_4的非等溫和等溫熱分解情況. 結果錶明, 兩種情況下得到的錶觀活化能E_a與反應級數n的一緻性均較好. 以等溫熱分解所得指前因子A和按踫撞理論計算LiBF_4的分子半徑r, 所得結果與實驗值相符, 錶明LiBF_4的熱分解反應基本符閤踫撞理論模型, 同時也驗證瞭ln A具有較高的可信度.
통과열중(TG)급미상열중곡선(DTG)분석기술연구LiBF_4적비등온화등온열분해정황. 결과표명, 량충정황하득도적표관활화능E_a여반응급수n적일치성균교호. 이등온열분해소득지전인자A화안팽당이론계산LiBF_4적분자반경r, 소득결과여실험치상부, 표명LiBF_4적열분해반응기본부합팽당이론모형, 동시야험증료ln A구유교고적가신도.
Non-isothermal and isothermal decompositions of LiBF_4 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 LiBF_4's thermal decomposition could be gotten. In addition, this conclusion could validate the high reliability of ln A.