摘要
采用恒定容积法测定了283.15—303.15 K CO2在碳酸二甲酯（DMC）中的溶解度。结果表明,溶解度随压力升高而增大,随温度升高而减小。与碳酸丙烯酯（PC）相比,在283.15 K及288.15 K条件下,CO2在DMC中的溶解度比在PC中平均约高50%。并且常温下DMC的吸收性能优于低温下甲醇的吸收性能。因此,DMC是一种性能更为优越的溶剂。加入1.5 g金属-有机骨架化合物（MOF）ZIF-69后,温度为283.15 K及288.15 K时对DMC吸收CO2具有增强作用,而在295.15 K及303.15 K时无影响。这种特性也有利于CO2吸收和解吸循环过程的节能。
The solubility of CO2 in dimethyl carbonate（DMC） was measured at 283.15-303.15 K by constant volume method.The results show that the solubility of CO2 in DMC increases with gas pressure rise and decreases with temperature rise.Compared with propylene carbonate（PC）,the solubility of CO2 in DMC is about 50% higher than that in PC at 283.15,288.15 K.Furthermore,the solubility of CO2 in DMC at normal temperature is higher than that of methanol at low temperature.So DMC is a good solvent for CO2.Adding 1.5 g metal-organic frameworks（MOF） ZIF-69 enhances the adsorption of CO2 at 283.15,288.15 K,but has no influence at 295.15,303.15 K.This feature helps the energy saving of the cycle of CO2 absorption and desorption.
出处
《化学工程》
CAS
CSCD
北大核心
2010年第8期69-72,共4页
Chemical Engineering(China)
