论文部分内容阅读
采用两步法合成了双氨基功能化季鏻类离子液体3-丙胺基-三丁基鏻甘氨酸盐([aP4443][Gly])、3-丙氨基-三丁基鏻丙氨酸盐([aP4443][Ala])和3-丙氨基-三丁基鏻缬氨酸盐([aP4443][Val]),研究了[aP4443][Gly]与水构成的两元体系的粘度和电导率的变化.结果表明,在298.15～343.15K温度范围内,随阴离子烷基链增长离子液体粘度增大、电导率减小;随温度升高、含水量增加,[aP4443][Gly]-H2O两元体系的粘度减小、电导率增大.CO2吸收实验表明,添加水后离子液体[aP4443][Gly]对CO2的吸收速率均提高;当水摩尔分数小于0.50时,饱和吸收量增大;当水摩尔分数从0.50增大到0.75时,饱和吸收量减小,说明添加适量水可大幅改善[aP4443][Gly]吸收CO2的行为.
The biamino functionalized quaternary phosphonium ionic liquid 3-propylamino-tributylphosphonium glycinate ([aP4443] [Gly]), 3-propylamino tributylphosphonium alanine ([ aP4443] [Ala]) and 3-propylaminotributylphosphonium valine ([aP4443] [Val]) were used to study the viscosity and conductivity of the binary system of [aP4443] The results showed that the ionic conductivity increased with the increase of anionic alkyl chain in the temperature range of 298.15 ~ 343.15K, and the conductivity decreased. With the increase of temperature, the content of water increased, and [aP4443] [Gly] -H2O The viscosity of the system decreased, and the conductivity increased.CO2 absorption experiments showed that the adsorption rate of [aP4443] [Gly] to CO2 increased after the addition of water and saturated absorption increased when the molar ratio of water to water was less than 0.50 When the water mole fraction increased from 0.50 to 0.75, the saturated absorption decreased, indicating that adding a proper amount of water could significantly improve the CO2 absorption of [aP4443] [Gly].