【摘要】 讨论了硝基苯催化加氢和电解还原制备对氨基苯酚过程中杂质的形成机理,提出了减少杂质形成和除去杂质的方法。使得对氨基苯酚质量符合制药要求。更多还原

【Abstract】 The mechanisms of the formation of impurities in the preparation of p-aminophenol by catalytic or electrolytic reduction of nitrobenzene were discussed. The methods for suppressing the formation of impurities and eliminating them afterward were proposed. The quality of p-aminophenol prepared by this methods met the specification of medicine.更多还原