中文摘要：

为了得到气-液水合反应系统中气体水合物生成驱动力,给出气-液水合反应系统驱动力公式,分析气-液水合反应驱动力的求解过程,就压力对纯水中一元气体生成水合物驱动力的影响做定量研究.结果表明：等温条件下,随着压力的增大,气-液水合物系统摩尔吉布斯自由能变梯度由负值逐渐增大,丙烷水合物系统和硫化氢水合物系统的摩尔吉布斯自由能变梯度甚至由负变正,即水合反应存在＂驱动力极大值＂.研究结果纠正了＂压力越大,气体水合反应越快＂的传统看法.

英文摘要：

To get the driving force for hydrate reaction of gaseous hydrate generation in liquid-gaseous hydrate reaction system, a detailed solution procedure was presented on the basis of general expression of driving force for hydrate reaction and the impact of pressure on the driving force for generation of single gas hydrate in pure water was investigated quantitatively. The results indicated that, in the isothermal case, the gradient of molar Gibbs free energy difference gradually increased with pressure from its negative value and even above zero in propane gas hydrate and hydrogen sulfide gas hydrate, meaning that ＂the maximum driving force＂ existed for these hydrates and challenged the traditional view point that the higher the pressure, the faster the hydrate formation would be.