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    • 2. 发明授权
    • Process for preparing organic acids
    • 制备有机酸的方法
    • US4195186A
    • 1980-03-25
    • US924054
    • 1978-07-12
    • Johann G. D. SchulzEdward T. Sabourin
    • Johann G. D. SchulzEdward T. Sabourin
    • C07C51/31C07C51/20
    • C07C51/316
    • A process for preparing a mixture of polycyclic aromatic polycarboxylic acids that is substantially soluble in acetone but substantially insoluble in water which comprises subjecting a slurry containing coal to reaction with aqueous nitric acid in an atmosphere containing molecular oxygen, mechanically separating the solids in the resulting slurry, extracting the resulting solids with a polar solvent to separate therefrom a mixture of polycyclic aromatic polycarboxylic acids substantially soluble in acetone but substantially insoluble in water and a mixture of polycyclic aromatic polycarboxylic acids substantially insoluble in acetone and substantially insoluble in water.
    • 一种制备基本上可溶于丙酮但基本上不溶于水的多环芳族多元羧酸的混合物的方法,该方法包括使含有煤的浆料在含有分子氧的气氛中与硝酸水溶液反应,将得到的浆料中的固体机械分离 用极性溶剂萃取所得固体,从而分离出基本上不溶于丙酮但基本上不溶于水的多环芳族多羧酸混合物和基本上不溶于丙酮的多环芳族多元羧酸混合物,基本上不溶于水。