Catalytic Selective Oxidation of 4-Chlorotoluene by Bi-MCM-41

Abstract

A series of bismuth incorporated MCM-41 mesoporous samples were synthesized and characterized by inductive coupled plasma emission spectrometer (ICP), X-ray diffraction, N 2 adsorption/desorption, transmission electron microscopy, and UV-Vis spectroscopy. These samples catalyzed the selective oxidation of 4-chlorotoluene efficiently even on a large scale with H 2 O 2 as oxidant in acetonitrile. No bismuth was detected by ICP in the condensed reaction mother liquid, and the recycle test proved the catalyst was stable. 合成了一系列 Bi 掺杂的 MCM-41 介孔分子筛, 运用电感耦合等离子体原子光谱, X 射线衍射, N 2 吸附脱附, 透射电镜和紫外可见光谱对其进行了表征, 并将其用于以 H 2 O 2 为氧化剂, 乙腈为溶剂的对氯甲苯选择氧化反应中. 结果表明, Bi-MCM-41 即便在底物量较大时也表现出较高的催化活性. 浓缩反应液的检测结果表明, Bi 在反应过程中无明显流失, 同时该催化剂具有良好的循环使用性能. A series of bismuth incorporated MCM-41 samples were synthesized. Bi-MCM-41 catalyzed the selective oxidation of 4-chlorotoluene efficiently even on a large scale.