The vapor-liquid equilibrium(VLE)data of α-pinene+β-pinene(428.82—438.13 K),α-pinene+p-cymene(429.05—447.15 K),β-pinene+p-cymene(439.20—448.66 K)and α-pinene+β-pinene+p-cymene(432.17—448.11 K)were determined...The vapor-liquid equilibrium(VLE)data of α-pinene+β-pinene(428.82—438.13 K),α-pinene+p-cymene(429.05—447.15 K),β-pinene+p-cymene(439.20—448.66 K)and α-pinene+β-pinene+p-cymene(432.17—448.11 K)were determined at atmospheric pressure(100.7 kPa)with the modified Ellis still.The thermodynamic consistency of the experimental data was confirmed by means of the Herington method.Three activity coefficient models,Wilson,NRTL,UNIQUAC,were used to correlate and calculate the VLE data of these binary systems to obtain the binary parameters.Average relative deviations between calculated values and experimental data of vapor phase mole fraction were all less than 0.40%.The binary parameters of Wilson equation were also used to calculate the bubble point and the vapor phase composition for the ternary mixture without any additional adjustment.The predicted VLE for the ternary system was in good agreement with the experimental results.展开更多
采用液相反应,以甲酸铜-甲酸镍为催化剂,将工业双戊烯催化脱氢合成对伞花烃。考察了催化剂制备条件如活性组分前体类型及其预处理方式、沉淀方法、载体加入顺序、铜镍摩尔比以及反应条件对产物中对伞花烃质量分数的影响,催化剂较佳合成...采用液相反应,以甲酸铜-甲酸镍为催化剂,将工业双戊烯催化脱氢合成对伞花烃。考察了催化剂制备条件如活性组分前体类型及其预处理方式、沉淀方法、载体加入顺序、铜镍摩尔比以及反应条件对产物中对伞花烃质量分数的影响,催化剂较佳合成条件为:以甲酸铜-甲酸镍为活性前体,采用并流沉淀的方法,碳酸钠溶液为沉淀剂,沉淀过程中加入载体活性炭,活性前体用无水乙醇洗涤,n(Cu^(2+)):n(Ni^(2+))=1:3。最佳合成条件为:采用液相反应,在180℃反应6 h,催化剂用量每15 mL 原料1.0 g,产物中对伞花烃的质量分数可达84.52%。展开更多
文摘The vapor-liquid equilibrium(VLE)data of α-pinene+β-pinene(428.82—438.13 K),α-pinene+p-cymene(429.05—447.15 K),β-pinene+p-cymene(439.20—448.66 K)and α-pinene+β-pinene+p-cymene(432.17—448.11 K)were determined at atmospheric pressure(100.7 kPa)with the modified Ellis still.The thermodynamic consistency of the experimental data was confirmed by means of the Herington method.Three activity coefficient models,Wilson,NRTL,UNIQUAC,were used to correlate and calculate the VLE data of these binary systems to obtain the binary parameters.Average relative deviations between calculated values and experimental data of vapor phase mole fraction were all less than 0.40%.The binary parameters of Wilson equation were also used to calculate the bubble point and the vapor phase composition for the ternary mixture without any additional adjustment.The predicted VLE for the ternary system was in good agreement with the experimental results.
文摘采用液相反应,以甲酸铜-甲酸镍为催化剂,将工业双戊烯催化脱氢合成对伞花烃。考察了催化剂制备条件如活性组分前体类型及其预处理方式、沉淀方法、载体加入顺序、铜镍摩尔比以及反应条件对产物中对伞花烃质量分数的影响,催化剂较佳合成条件为:以甲酸铜-甲酸镍为活性前体,采用并流沉淀的方法,碳酸钠溶液为沉淀剂,沉淀过程中加入载体活性炭,活性前体用无水乙醇洗涤,n(Cu^(2+)):n(Ni^(2+))=1:3。最佳合成条件为:采用液相反应,在180℃反应6 h,催化剂用量每15 mL 原料1.0 g,产物中对伞花烃的质量分数可达84.52%。
