摘要
用硅溶胶改性的漆原镍催化剂，在常压液相催化条件下，氢化邻硝基苯酚制备邻氨基苯酚的反应过程，可分为诱导期、恒速吸氢阶段、吸氢衰减期３个反应阶段．恒速吸氢阶段的吸氢速率为５×１０２ｍｏｌ／（ｋｇ·ｍｉｎ）且与体系的温度无关，诱导期随温度的增加而变短，吸氢衰减期的长短随溶剂量的变化而变化．实验结果表明，邻氨基苯酚的收率在９５％左右．
o Aminophenol was synthesized by hydrogenation of o nitrophenol at the atmospheric pressure in the presence of precipitated Ni improved by silicasol in yield 95%. The results showed that hydrogenation went through three reaction stages: induction, constant absorption hydrogen and diminish period. The induction period is short as the temperature increases. The rate of absorption hydrogen is 5×10 -2 mol/(kg·min). in constant absorption period which is not related with reaction temperature. The diminish period is influenced by solvent amount
出处
《武汉大学学报（自然科学版）》
CSCD
1998年第6期679-681,共3页
Journal of Wuhan University(Natural Science Edition)
关键词
邻氨基苯酚
加氢
合成
催化
常压
o aminophenol, silicasol, hydrogenation, nickel
