Abstract

The composition and characteristics of high-molecular-weight components of the thermolysis products of petroleum residue asphaltenes obtained in supercritical water with and without a catalyst based on iron oxides have been studied. The experiments were carried out in an autoclave at a temperature of 450°C for 60 min; the catalyst was prepared in situ from iron(III) tris(acetylacetonate). The use of supercritical water and the in situ prepared catalyst made it possible to increase the yield of saturated and aromatic hydrocarbons by a factor of more than 9.5 compared to that in a control experiment (thermolysis without water and a catalyst) and decrease the yield of solid products insoluble in chloroform. The properties of high-molecular-weight components isolated from the thermolysis products were characterized using structural group analysis and IR spectroscopy. High-molecular-weight components obtained by thermolysis in supercritical water in the presence of the catalyst, in comparison with the products obtained in the control experiment, were characterized by higher H/C ratios and concentrations of oxygen-containing groups and lower average molecular weights.

中文翻译：

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超临界水中残油沥青质热破坏得到高分子量组分的特性

摘要

研究了在有和没有铁氧化物催化剂的情况下在超临界水中获得的石油渣油沥青质热解产物的高分子量组分的组成和特征。实验在450℃的高压釜中进行60分钟；该催化剂由三(乙酰丙酮)铁(III)原位制备。与对照实验（无水和催化剂的热解）相比，超临界水和原位制备的催化剂的使用使得饱和烃和芳香烃的产率提高了9.5倍以上，并降低了固体产品不溶于氯仿。使用结构基团分析和红外光谱对从热解产物中分离出的高分子量组分的性质进行了表征。与对照实验中获得的产物相比，在催化剂存在下在超临界水中热解获得的高分子量组分具有较高的H/C比和含氧基团浓度以及较低的平均分子量。 。