Abstract

The thermal stability of resins and asphaltenes of naphthenic and methane heavy oils was studied by thermogravimetry. Based on the data of physicochemical methods of analysis, it was shown that the resins and asphaltenes of the test oils had significant differences in molecular weight, elemental composition, and distribution of carbon atoms in structural fragments. Thermogravimetric analysis was performed by heating the samples from 25 to 650°С at a rate of 10 K/min in an atmosphere of argon. It was shown that the maximum rate of weight loss of naphthenic oil resins and asphaltenes occurred at lower temperatures, as compared to similar components of methane oil. The thermal stability of resins and asphaltenes depended on the composition and structural organization of these components due to their formation from oil dispersed systems of various chemical types. It was established that the thermal stability of resins and asphaltenes of methane oil was higher than the thermal stability of similar components of naphthenic oil.

中文翻译：

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用热重法研究稠油树脂和沥青质的热稳定性

摘要

采用热重法研究了环烷烃和甲烷稠油的树脂和沥青质的热稳定性。基于理化分析方法的数据表明，试验油的树脂和沥青质在分子量、元素组成和结构片段中碳原子分布方面存在显着差异。通过在氩气氛中以 10 K/min 的速率将样品从 25°С 加热到 650°С 进行热重分析。结果表明，与甲烷油的类似成分相比，环烷油树脂和沥青质的最大失重率发生在较低温度下。树脂和沥青质的热稳定性取决于这些组分的组成和结构组织，因为它们是由各种化学类型的油分散系统形成的。确定甲烷油的树脂和沥青质的热稳定性高于环烷油类似组分的热稳定性。