The Experiment Simulation About The Role Of The Humic Acid In The Process Of The Uranium Deposits

It is familiar that petroleum, natural gas, coal and uranium can coexist, enrich and deposit in the same sedimentary basin, which reflects the evolvement of humic substance, the geochemical evolution of uranium (e.g. transfer, enrichment and deposit) and the result of interaction in sedimentary environment. Thus, investigating the mechanism and environment of coexistent not only perfects the theory of energy generation but also possesses some realistic significance of energy exploration.Experiment simulation plays an important role in researching the theory of energy coexistent. In order to investigate the role of humic substance in the process of uranium deposit, this work selects some organic acids, simulating humic substances, to react with uranium via hydrothermal condition.More than 20 uranium-organic acid complexes were obtained via hydrothermal reaction, and seven crystal structures were determined. In the seven crystal structures, carboxyl, showing variable coordinated modes, bonds with uranium atom. The mononuclear, binuclear, 1 D chain, 1D helical chain and 3 D framework structures are found in these complexes. Owing to all these complexes are stable in water solution and air atmosphere, it is possible that uranium may transfer as a complex.Three heteronuclear uranyl complexes were obtained via hydrothermal reaction, too. Most notably, the uranium-potassium coordination polymer contains some U-K-0 2D layers, which are not reported in the literature, and the coordination mode of the p-nitrbbenzoic acid is also rarely observed before in either naturally occurring or synthetic systems. Additional, a highly porous and stable cuprum coordination polymer Cu(Im)6[(Cu4Cl)3(btc)7(btcH)] was obtained via solvothermal synthesis. It contains some basket shaped building blocks, which is composed of Cu4Cl units and btc ligands, and possesses potential applicability to gas storage and molecular sieves.