详细信息
工业双戊烯脱氢生成对伞花烃的热化学分析 被引量:4
Thermochemical Analysis for Dehydrogenation of Industrial Dipentene to Form p-Cymene
文献类型:期刊文献
中文题名:工业双戊烯脱氢生成对伞花烃的热化学分析
英文题名:Thermochemical Analysis for Dehydrogenation of Industrial Dipentene to Form p-Cymene
作者:张秋格[1] 毕良武[1] 赵振东[1] 李冬梅[1] 古研[1] 王婧[1] 薄采颖[1] 陈玉湘[1] 刘先章[1]
第一作者:张秋格
机构:[1]中国林业科学研究院林产化学工业研究所生物质化学利用国家工程实验室国家林业局林产化学工程重点开放性实验室江苏省生物质能源与材料重点实验室
年份:2009
卷号:29
期号:B10
起止页码:17-22
中文期刊名:林产化学与工业
外文期刊名:Chemistry and Industry of Forest Products
收录:CSTPCD;;Scopus;北大核心:【北大核心2008】;CSCD:【CSCD_E2011_2012】;
基金:国家林业局重点科学技术研究项目(2006-51);浙江省与中国林科院省院合作林业科技项目(2008SY06)
语种:中文
中文关键词:双戊烯;对伞花烃;Benson键贡献法;Benson基团贡献法;热化学计算
外文关键词:dipentene ;p-cymene ;Benson bond contribution method ;Benson group contribution method ;thermochemical calculation
分类号:TQ351.472
摘要:用Benson键贡献法和Benson基团贡献法分别计算以工业双戊烯为原料脱氢生成对伞花烃反应中各反应物、产物及副产物的标准生成焓(△fHm°)、标准熵(SM°)及等压热容(Cp,m°)。通过热力学计算,分别得到各反应物脱氢反应标准焓变(△rHm°)、反应标准熵变(△rSm°)、标准吉布斯自由能变(△rGm°)以及反应的平衡常数(K),探讨了各热力学数据与温度(T)的关系,并得到553~583K时,工业双戊烯脱氢生成对伞花烃的综合反应焓变和综合吉布斯自由能变分别为:-21.26至-21.33kJ/mol和-118.11至-123.39kJ/mol。本研究为工业双戊烯脱氢制备对伞花烃的工程化和工业化开发提供热力学理论依据。
The standard enthalpy of formation, standard entropy and isobaric capacity of different reactants and products during the dehydrogenation of industrial dipentene to form p-cymene were calculated by Benson's methods of bond contribution and group contribution. Standard enthalpy change ( ArHm° ), standard entropy change( ArSm°), standard Gibbs' free energy change( ArGm°), equilibrium constant(K) and the relationships between various thermodynamic data of dehydrogenation of different reactants with temperature were obtained through thermochemical calculation. The comprehensive enthalpy change and comprehensive Gibbs' free energy change of dehydrogenation of industrial dipentene to form p-cymene at 553-583 K were -21.26 to -21.33 kJ/mol and -118. 11 to -123.39 kJ/mol, respectively. The study could provide a theoretical thermodynamic base for industrial development of preparing p-cymene from industrial dipentene by dehydrogenation.
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