铜络合三嗪聚合物纳米催化剂的制备及其对苯甲醇的氧化催化作用

Synthesis of Cu-coordinated Conjugated Triazine Framework and Application as a Catalyst in Oxidation of Benzyl Alcohol

制备了一种高性能的异相催化剂催化剂(CTF-2-CuNPs),然后运用固体粉末衍射仪(XRD)和透射电子显微镜(TEM)对纳米颗粒进行了表征.其作为异相催化剂可以在80℃、常压下,直接以氧气作为氧化剂将苯甲醇氧化为苯甲醛,转化率能高达80%、选择性能达到100%.而当使用四甲基哌啶(TEMPO)作为氧化剂后,苯甲醇在6h内被完全氧化为苯甲醛.由于原料经济实惠,反应以水为溶剂,以氧气为氧化剂,这极大的节约了反应成本,避免了环境污染,此外,该催化剂在回收使用5次后仍保持着较高的催化活性,故该催化剂在未来醇的工业氧化方面有很好的应用前景.

A new heterogeneous catalyst, named as CTF-2-CuNPs, was successfully prepared. The solid powder diffraction （XRD） and transmission electron microscopy （TEM） analysis showed that the new compound consists of nanoparticles. Benzyl alcohol can be converted to benzaldehyde with CTF-2-CuNPs as catalyst and oxygen as an oxidizing agent at 80℃ under atmospheric pressure, with the conversion and selec- tivity of as high as 80% and of 100%, respectively. Besides, when tetramethylpiperidine （TEMPO） is added, the benzyl alcohol is completely oxidized to benzaldehyde in 6 h. Water was used as solvent in the reaction to reduce the cost and avoid environmental pollution. More importantly, the catalyst CTF-2-CuNPs still demon- strated high performance after 5 times recycles. Therefore, this work provides an economical and promising way to the industrial application of oxidation of alcohols to aldehyde.