Abstract Soluble organic matter in Dongming lignite was obtained via thermal dissolution using isopropanol as the solvent and named as DLIP. Catalytic conversion of DLIP was carried out using Co-Mo/γ-Al2O3 as the catalyst to reach hydrogenation, hydrocracking and heteroatom removal. DLIP and the corresponding catalytic products were analyzed by Fourier transform-infrared spectroscopy (FT-IR), gas chromatography/mass spectrometry (GC/MS) and Orbitrap mass spectrometry (Orbitrap MS). According to the FT-IR data, the contents of alcohols and phenols increased with reaction temperature due to the cleavage of C O bonds in macromolecules of coal. The soluble organic matter and its catalytic hydrogenation products analyzed by GC/MS were classified into 10 classes, and Orbitrap MS was used to obtain the componential distribution of heteroatom containing compounds. Moreover, weighted-mean double bond equivalent (DBE) value and weighted-mean carbon number (CN) were calculated. The decrease of weighted-mean DBE/CN after catalytic conversion demonstrated ring opening reactions and cleavage of bridge-bonds.

中文翻译：

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东明褐煤异丙醇可溶性有机物催化加氢脱杂原子

摘要 以异丙醇为溶剂，经热溶解得到东明褐煤中的可溶性有机质，命名为DLIP。DLIP的催化转化以Co-Mo/γ-Al2O3为催化剂，实现加氢、加氢裂化和脱杂原子。DLIP 和相应的催化产物通过傅里叶变换红外光谱 (FT-IR)、气相色谱/质谱 (GC/MS) 和 Orbitrap 质谱 (Orbitrap MS) 进行分析。根据FT-IR数据，由于煤大分子中CO键的断裂，醇和酚的含量随着反应温度的升高而增加。GC/MS 分析的可溶性有机物及其催化加氢产物分为 10 类，Orbitrap MS 用于获得含杂原子化合物的组分分布。此外，计算了加权平均双键当量（DBE）值和加权平均碳数（CN）。催化转化后加权平均 DBE/CN 的减少表明开环反应和桥键断裂。