Effect of 1-butyl-3-methylimidazolium tetrafluoroborate on the formation rate of CO_2 hydrate  

作　　者：Qi Chen Yong Yu Peng Zeng Wei Yang Qianqing Liang Xiaoming Peng Yansheng Liu Yufeng Hu 

机构地区：[1]Jingwei gas limited company, Yuncheng 044000, Shanxi, China [2]Laboratory of Green Chemistry and Chemical Engineering, China University of Petroleum, Beijing 102249, China

出　　处：《Journal of Natural Gas Chemistry》2008年第3期264-267,共4页天然气化学杂志（英文版）

基　　金：the Youth Innovation Foundation of Petroleum Science (04E7031);New Century Excellent Person Program (NCET-06-0088);the National Natural Science Foundation of China (40673043 and 20576073)

摘　　要：The effect of the addition of 1-butyl-3-methylimidazolium tetrafluoroborate （[C4mim][BF4]） on the formation rates of CO2 hydrates was investigate. The isothermal and isobaric methods were used to measure the formation rates of CO2 hydrates. As compared to those of pure water, the data of phase equilibrium changed greatly. The effects of pressure, temperature, and the concentration of [C4mim][BF4] aqueous solution on the formation rates of CO2 hydrates were investigated. With a constant concentration of [C4mim][BF4], the rate of gas consumption was enhanced with the lowering of experimental temperature. However, a decrease in pressure exerted an opposite effect on the rate of gas consumption. Moreover, the addition of [C4mim][BF4] raised the equilibrium pressure of hydrate formation at the same temperature.The effect of the addition of 1-butyl-3-methylimidazolium tetrafluoroborate （[C4mim][BF4]） on the formation rates of CO2 hydrates was investigate. The isothermal and isobaric methods were used to measure the formation rates of CO2 hydrates. As compared to those of pure water, the data of phase equilibrium changed greatly. The effects of pressure, temperature, and the concentration of [C4mim][BF4] aqueous solution on the formation rates of CO2 hydrates were investigated. With a constant concentration of [C4mim][BF4], the rate of gas consumption was enhanced with the lowering of experimental temperature. However, a decrease in pressure exerted an opposite effect on the rate of gas consumption. Moreover, the addition of [C4mim][BF4] raised the equilibrium pressure of hydrate formation at the same temperature.

关 键 词：CO2 hydrate ionic liquids formation rate 

分 类 号：TE64[石油与天然气工程—油气加工工程]