Abstract: A space design for the molecule of hydrocarbon based on the traditional group division method is developed, and a group vector space method (GVSM) for estimating critical property of hydrocarbon is proposed by using the module index of the group vector to characterize the group position in the molecule. Expressions for estimating critical properties T_c,p_c and V_c of hydrocarbons are proposed, with the numerical values of relative group parameters presented. The average percentage deviations of T_c,p_c and V_c estimation are 0.62, 2.3 and 1.6 respectively.

Key words:

烃类, 基团向量空间方法, 临界性质, 物性估算

关键词:

烃类, 基团向量空间方法, 临界性质, 物性估算