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本文采用碱性高锰酸钾分步氧化法,并配合现代物理仪器分析,对黄县和茂名两种页岩干酪根进行了组成结构的研究。两种干酪根分别经过16步和15步的仔细氧化,获得占原料碳82.45％和82.24％的有机酸碳收率,其中有占原料碳48.32％和42.24％的产物得到了乙醚、丙酮的溶解抽提。通过对两种干酪根及其氧化产物的元素分析和红外分析及对产物中的溶剂可溶部分的色谱和色质谱分析,证明了两种干酪根的长链脂肪性,并指出两者在组成结构上各自的特征和差异。黄县干酪根脂性强于茂名,其中尤以长链脂性更强。黄县干酪根的芳构分子比茂名少,但具有较强的稠合度。茂名干酪根中芳香组价略多,但稠合度小,而其脂环和甲基取代异构物均多于黄县。对于干酪根中杂原子的存在形式也作了粗略的探讨。通过对分步氧化产物的前后两种馏份及氧化残渣的全面分析验证,提出了对氧化机理的看法。
In this paper, alkaline potassium permanganate step oxidation method, and with the analysis of modern physical instrumentation, Huangxian and Maoming two kinds of kerogen kerogen were studied. The two kerogens were carefully oxidized respectively in 16 steps and 15 steps, yielding 82.45% and 82.24% of the organic carbon yield of the raw materials, of which 48.32% and 42.24% of the raw material carbon were dissolved in diethyl ether and acetone Extract. Through the elemental and infrared analysis of two kerogen and its oxidation products and the chromatographic and colorimetric analysis of the solvent-soluble part of the product, the long-chain fatty of the two kerogens was proved, Structure of the respective characteristics and differences. Huang County kerogen lipid is better than Maoming, especially long-chain lipid more strong. Huang County kerogen aromatic molecules less than Maoming, but has a strong degree of condensation. Maoming kerogen aromatic group slightly more, but the degree of condensation is small, and its alicyclic and methyl-substituted isomers are more than Huang County. For kerogen heteroatom in the form of existence also made a rough discussion. Based on the comprehensive analysis and verification of the two fractions before and after the oxidation products, the oxidation mechanism was put forward.