合成了一种具有表面活性功能的离子液体1?（3?磺酸基）丙基哌啶十二烷基苯磺酸（[PIPS]DBSA），采用FT?IR，1 H NMR 和元素分析等方法对产物进行表征，并将其用于促进 CO2水合物的生成，考察[ PIPS] DBSA对CO2水合物生成过程中温度和压力的影响．实验表明在温度4℃—6℃时，300 mg·L－1[ PIPS] DBSA溶液中CO2的相平衡压力比700 mg·L－1的十二烷基苯磺酸钠（ SDBS）溶液的相平衡压力下降了13?6％—14．96％．在4℃时，300 mg·L－1[ PIPS] DBSA溶液中CO2压力稳定所用的时间与700 mg·L－1 SDBS溶液相比减少了50 min，表明[ PIPS] DBSA对CO2水合物的形成具有良好的促进作用．
A surface active functional ionic liquid, 1?(3?sulfonic acid group) propyl piperidinium dodecylbenzenesulfonic acid ([ PIPS] DBSA) was synthesized and characterized by 1H NMR, FTIR, and element analysis. [ PIPS] DBSA was used to promote the formation of carbon dioxide hydrate, and its effect on the temperature and pressure was investigated. Experimental results show that, by comparing 300 mg·L-1 [ PIPS ] DBSA solution with the 700 mg·kg-1 sodium dodecylbenzenesulfonate solution( SDBS) , the phase equilibrium pressure of carbon dioxide hydrate was decreased by 13.60% —14.96% in the range of 4℃ —6℃, and the required time for steady CO2 pressure was reduced by 50 min at 4 ℃. The investigation indicated that [ PIPS] DBSA has a good promotion effect on the formation of cardon dioxide hydrate.
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