温控相转移纳米铑催化邻氯硝基苯选择性加氢反应

摘要

研究了水/1-戊醇两相体系中铑纳米催化剂在邻氯硝基苯选择性还原制邻氯苯胺反应中的催化性能。在优化的反应条件下，邻氯硝基苯的转化率和邻氯苯胺的选择性分别为100%和98%。铑纳米催化剂经简单分相后可循环使用8次，其催化活性和选择性基本保持不变。%The use of a thermoregulated phase‐transfer Rh nanoparticle catalyst for the selective hydrogena‐tion of ortho‐chloronitrobenzene (o‐CNB) to ortho‐chloroaniline (o‐CAN) in an aqueous/1‐pentanol biphasic system was studied. Under the optimized reaction conditions, the conversion of o‐CNB and the selectivity for o‐CAN were 100%and 98%, respectively. The catalyst was easily separated from the product by phase separation and reused eight times without evident loss of activity and selec‐tivity.