摘要
使用RD-1型热导式自动量热计测量了不同温度下环十二酮肟在98%硫酸中热效应。结果表明:当T<333K时,仅产生溶解热效应,303K下溶解热△H_(s,m)=-51.7kJ·mol ̄(-1)(m=4.285mol·kg ̄(-1));当T>343K时发生环十二酮肟重排反应,393K下反应热△H_(R,m)=-231.8kJ·mol ̄(-1)(m=4.96×10 ̄(-3)mol·kg ̄(-1))和△H_(R,m)=-237.0kJ·mol ̄(-1)(m=1.7×10 ̄(-2)mol·kg ̄(-1))。
篐eating effects of cyclododecanone-oxime in 98% sulphuric acid were measured withRD-1 heat-conducting auto-calorimeter. Results obtained indicated that when T<333 K, only heatingeffects of solution occurred(heat of solution △H_(s,m)=-51.7 kJ·mol^(-1)),when T>343 K,cy-clododecanone-Oxime rearrangement oceurred in sulphuric acid(heat of reaction △H_(R,m)=-231.8kJ·mol^(-1)(m=4. 96×10^(-3)mol·kg^(-1)) and △H_(R,m)=-237.0 kJ·mol^(-1)(m=1.74×10^(-2)mol·kg^(-1))).
关键词
环十二酮肟
硫酸
热效应
:cyclododecanone-oxime,sulphuric acid, heat of solution,heat of reaction.