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提出了两种用基团贡献法估算烃的辛烷值的方法 ,第一水平基团法和第二水平基团法。按在不同分子中相同原子带电量不变的原则划分出 2 4个第一水平基团和 31个第二水平基团 ,并用试验数据回归得到第一水平基团和第二水平基团对MON和RON的贡献值。用新方法对未参加回归的五种物质的辛烷值进行了预测 ,结果表明对于含有支链和环的烃应采用第二水平基团法估算其辛烷值 ,对简单的直链烃采用第一水平基团法估算其辛烷值
Two methods for estimating the octane number of a hydrocarbon using the group contribution method are proposed, the first horizontal group method and the second horizontal group method. According to the principle that the same charge of atoms in different molecules is constant, 24 first horizontal groups and 31 second horizontal groups are divided, and the first horizontal group and the second horizontal group are regressed to MON And the contribution of RON. The new method was used to predict the octane numbers of the five substances that did not participate in the regression. The results showed that the octane numbers of the branched and cyclic hydrocarbons should be estimated by the second horizontal group method. For the simple linear hydrocarbons, The first horizontal group method estimates its octane number