【摘要】 利用显微放大技术测定了不同温度(274.1～280.1K)、压力(0.80～4.38MPa)下乙烯水合物膜在乙烯气泡表面生长的动力学数据,采用量纲1Gibbs自由能差作为推动力对数据进行关联建模,得到了乙烯水合物膜生长动力学模型,并回归出乙烯水合物膜生长表观活化能为61.23kJ·mol-1,指前因子为6.76×1011mm2·s-1,同时,考察了在不同温度下压力对乙烯水合物膜生长速率的影响.更多还原

【Abstract】 The growth kinetics of ethylene hydrate was studied by measuring the hydrate film growth rate on the surface of a suspended ethylene bubble in water at temperatures from 274.1 K to 280.1 K over a pressure range of 0.80—4.38 MPa. The dimensionless molar Gibbs free energy difference was used as the driving force to correlate the experimental data. The apparent activation energy of 61.23 kJ·mol~ -1 and the pre-exponential factor of 6.76×10~ 11 mm~2·s~ -1 were determined by regression of experimental data.The influence of pressure upon the film growth rate of ethylene hydrate at different temperatures was also investigated.更多还原