考察了浸渍方法、不同浸渍液、贵金属含量、还原温度、载体的预处理等因素对对氯硝基苯加氢还原反应的影响。
The effect of impregnation method, impregnation solutions, loading content of Pt, reduction temperature and the carbon pre-treatment on the activity was discussed.
催化转移加氢是有机合成中一种有效的还原方法,与一般的氢气催化加氢法相比,具有反应条件温和、设备要求低等优点。
Catalytic transfer hydrogenation (CTH) is an effective reduction method, which conducts at a mild reaction condition and with simple facilities comparing to common catalytic hydrogenation.
结果显示,催化加氢工艺会发生脱卤反应,而采用铁粉还原的选择性好,产品纯度高。
For most reduction reactions concerned, dehalogenation occurred seriously in hydrogenation reaction. Better selectivity was achieved and purer products were prepared in the reduction by Fe.
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