将螺环磷酸二氯和对甲苯酚在碱性条件下以水为溶剂反应得到螺环磷酸对甲苯酚酯。用对甲苯酚钠在277nm处的吸光度变化跟踪反应进程,并考察了温度、水的用量、反应物的摩尔比对合成的影响。结果表明,反应温度在5℃以下,反应时间为11h,反...将螺环磷酸二氯和对甲苯酚在碱性条件下以水为溶剂反应得到螺环磷酸对甲苯酚酯。用对甲苯酚钠在277nm处的吸光度变化跟踪反应进程,并考察了温度、水的用量、反应物的摩尔比对合成的影响。结果表明,反应温度在5℃以下,反应时间为11h,反应物摩尔比为1∶2.2,水的用量100 m l为最佳条件,产率为86.36%。用IR和磷元素分析表征产品结构,使用TG分析产品的热稳定性。展开更多
The instability mechanisms of the supported liquid membrane using Celgard 2500 membranes as support and tributyl phosphate dissolved in kerosene as carrier for phenol transport was studied by ele.etroehemical impedanc...The instability mechanisms of the supported liquid membrane using Celgard 2500 membranes as support and tributyl phosphate dissolved in kerosene as carrier for phenol transport was studied by ele.etroehemical impedance spectroscopy. Emulsion formation is demonstrated to be one of the main causes for the instability of supported liquid membrane in the present system. The emulsion-facilitated conditions, such as higher membrane liquid concentration, faster stirring speed, lower salt concentration and higher HLB value, would accelerate the degradation of supported liquid membrane. Other mechanisms including solubility and osmotic pressure work together to increase the membrane liauid loss.展开更多
文摘将螺环磷酸二氯和对甲苯酚在碱性条件下以水为溶剂反应得到螺环磷酸对甲苯酚酯。用对甲苯酚钠在277nm处的吸光度变化跟踪反应进程,并考察了温度、水的用量、反应物的摩尔比对合成的影响。结果表明,反应温度在5℃以下,反应时间为11h,反应物摩尔比为1∶2.2,水的用量100 m l为最佳条件,产率为86.36%。用IR和磷元素分析表征产品结构,使用TG分析产品的热稳定性。
基金Supported by the National Natural Science Foundation of China （20676023）.
文摘The instability mechanisms of the supported liquid membrane using Celgard 2500 membranes as support and tributyl phosphate dissolved in kerosene as carrier for phenol transport was studied by ele.etroehemical impedance spectroscopy. Emulsion formation is demonstrated to be one of the main causes for the instability of supported liquid membrane in the present system. The emulsion-facilitated conditions, such as higher membrane liquid concentration, faster stirring speed, lower salt concentration and higher HLB value, would accelerate the degradation of supported liquid membrane. Other mechanisms including solubility and osmotic pressure work together to increase the membrane liauid loss.
