环戊烷-氢气水合物形成过程研究

Formation of Cyclopentane-Hydrogen Clathrate Hydrates

利用定容恒温法研究了两种体系(1)氢气-环戊烷-水混合液体系;(2)氢气-环戊烷水合物颗粒体系(两种体系中环戊烷与水的摩尔比均为1:17)在2.0℃、10～18 MPa下环戊烷-氢气水合物的形成特性,比较了两种体系中水合物的形成过程,并计算了储氢量(氢气在水合物中的质量分数)。实验结果表明,在上述条件下,不同体系中环戊烷-氧气水合物的形成速率不同,在氢气-环戊烷水合物颗粒体系中水合物的形成速率相对较快,且在同等条件下储氢量也大,最大储氢量为0.27%。两种体系中形成的环戊烷-氢气水合物的储氢量均随初始压力的升高而增加。最后分析了两种体系中环戊烷-氢气水合物的形成机理。

Formations of cyclopentane-hydrogen clathrate hydrates were studied in two different systems, hydrogen-cyclopentane-water mixture system and hydrogen-cyclopentane hydrates powder system（ mole ratio of cyclopentane to water 1 ： 17 in both systems） in constant volume and temperature at 2.0 ℃ and initial pressure of 10 - 18 MPa. Formation processes in both systems were investigated and the hydrogen storage capacities in clathrate hydrates were calculated. Under above conditions, the hydrate formation rates in two systems were different. In the second system the rate was faster and the hydrogen storage capacity （the mass fraction of hydrogen in hydrate） was larger （maximum value 0.27% ） than the that in first system under same conditions. Also the hydrogen storage capacities increased with initial pressure rising in both systems. The formation mechanisms of cyclopentanehydrogen clathrate hydrate in both systems were analyzed.