褐煤中高含量的1~3低环芳香(杂环)结构体，主要由Car-Cal键合结构连接，制取低芳环高价值精细有机化学品是其分质利用的最佳途径，而提高解聚过程低环芳香单体数量至关重要。项目基于内蒙褐煤富含的Car-Cal键合结构特性及其与金属组分的键合能力，制备及筛选金属催化组分，研究其与Car-Cal键合结构所形成Metal-Bridge Cluster微结构形态特征、温和解聚反应过程中Metal-Bridge Cluser微结构特征转化规律，揭示内蒙褐煤解聚反应性与Metal-Bridge Cluster微结构特征之间的内在关系及金属组分催化作用机理，建立金属组分对其解聚反应的催化作用机理模型。对Car-Cal键合结构进行精准活化，使其在温和反应条件下，沿着“断桥去侧，留环抑聚”途径进行反应，促进低环芳香结构单体生成，进而制备低芳环高价值精细有机化学品，可为褐煤高效梯级利用提供理论依据与技术支持！

The depolymerization production of high value fine organic chemicals with low aromatic structure from Inner Mongolia lignite，containing a large proportion of facile depolymerization and degradable oil-likeable component content，is the optimal way to use their sub-quality. Increasing of the low aromatic structure monomer is crucial to the yield of high value fine organic chemicals. Based on the structure characteristics of Car-Cal bridge linkages or side bonds，metal component will be prepared and screened according to catalysis tests. The key reaction activated sites，formed Metal-Bridge Cluster linking the metal and Car-Cal，and their transformation process under mild depolymerization reaction will be studied by GC/MS，UV-vis spectra，FT-IR spectra，Synchronous Fluorescence spectra，FT-ICR MSFTIR，XRD，HRTEM，SEM，XPS，13C NMR，EELS and NEXAFS/XANES. The inherent relationship and characterizations of depolymerization reaction will be revealed based on the dependence of reactivity on the Metal-Bridge Cluster microstructure and their transformation during the reaction process. The catalytic mechanism of the selected metal compound on the depolymerization reaction will be cleared in the presentation of mechanism catalytic model. The result will greatly improve the production of low aromatic structure monomer from Inner Mongolia lignite under mild depolymerization reaction. The precise activation of Car-Cal bond by the metal component during mild depolymerization reaction will make sure the route of depolymerization reaction controlled by the cleavage of bridge linkages，removing of side to aromatic ring，retention of aromatic ring and suppression of polymerization among produced low aromatic structure monomer. The theoretical discovery of this project will provide a theoretical basis and technical support for the development and utilization of production of high value fine organic chemicals from Inner Mongolia lignite.