Abstract

The structural group characteristics of resins and asphaltenes, isolated from high-sulfur natural asphaltite of the Ivanovskoe oilfield in Orenburg oblast and the liquid products of its conversion in a flow of supercritical water (SCW) at 400°C and 30 MPa with and without admixture of zinc or aluminum, have been investigated. It has been shown that as a result of SCW treatment, the molecular weight of the resins and asphaltenes decreases two- to fivefold in comparison with the components of the initial asphaltite. This is determined by a decrease in the number of structural blocks in the molecules which become more compact due to the decrease both in the number of rings, predominantly naphthenic ones, in the blocks and in the number of carbon atoms in the aliphatic substituents. The fraction of aromatic carbon atoms substantially increases, and the degree of substitution of the aromatic nucleus decreases in the resins and asphaltenes isolated from the conversion products. The differences in the structural chemical characteristics of the resins and asphaltenes manifest themselves to a greater extent in the case the metal admixtures.

中文翻译：

---

高硫天然沥青的树脂和沥青质的结构族特征及其在超临界水中的转化产物

摘要

从Orenburg州Ivanovskoe油田的高硫天然沥青岩中分离出的树脂和沥青质的结构基团特征及其在400°C和30 MPa的超临界水（SCW）流中转化的液体产物已经研究了锌或铝的含量。已经表明，通过SCW处理，与初始沥青质的组分相比，树脂和沥青质的分子量降低了二至五倍。这取决于分子中结构嵌段数目的减少，所述分子由于嵌段中主要是环烷基的环数目以及脂族取代基中碳原子数目的减少而变得更加致密。芳香族碳原子的比例大大增加，从转化产物中分离出的树脂和沥青质中芳核的取代度降低。在金属混合物的情况下，树脂和沥青质的结构化学特性的差异在更大程度上表现出来。