Magnetically recoverable and recyclable Co–Co2B nanocomposites are described for the catalytic and chemoselective reduction of nitroarenes using two different hydrogen sources, sodium borohydride and hydrazine hydrate. Both the systems display an interesting chemoselective reduction switch. The kinetics of reduction of nitroaromatics were studied for the first time and follow nitroreductase enzyme-like kinetics
描述了可磁回收和可循环利用的Co-Co 2 B纳米复合材料,用于使用两种不同的氢源(
硼氢化钠和
水合
肼)催化还原和
化学选择性还原硝基
芳烃。这两个系统都显示了一个有趣的
化学选择性还原开关。首次研究了硝基芳香族化合物的还原动力学,并遵循类似硝基还原酶的动力学,其中K cat(5.2×10 4 s -1)和K cat / K M(4.4×10 6 M -1 s -1)过高)值,达到催化完美状态。通过磁性回收纳米复合催化剂研究了催化剂体系的可回收性。