氧化铜/氮化碳复合材料催化氧化二苯甲醇的性能研究

Study on the Catalytic Oxidation of Diphenylmethanol by Copper Oxide/Carbon Nitride Composites

通过原位生成氧化铜的方法,成功制备出氧化铜/氮化碳催化剂(CuO/g-C_(3)N_(4))。利用X粉末衍射(XRD)、傅里叶变换红外光谱(FT-IR)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和X射线光电子能谱(XPS)分析样品结构。在二苯甲醇氧化制备二苯甲酮的反应中,研究了CuO/g-C_(3)N_(4)的催化性能。结果表明,以CuO/g-C_(3)N_(4)作为催化剂、H_(2)O_(2)(30%)作为氧化剂,在75℃条件下、乙腈溶剂中,目标产物二苯甲酮的产率为76%。在相同的条件下,CuO和g-C_(3)N_(4)的产率分别为60%和5%,复合后的CuO/g-C_(3)N_(4)催化活性得到明显提升。

The copper oxide/carbon nitride catalyst(CuO/g-C_(3)N_(4))was successfully prepared by in-situ generation of copper oxide.The sample structure was analyzed using X-ray powder diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR),scanning electron microscopy(SEM),transmission electron microscopy(TEM),and X-ray photoelectron spectroscopy(XPS).In the reaction of diphenylmethanol oxidation to prepare diphenylketone,the cata-lytic performance of CuO/g-C_(3)N_(4) was studied.The results showed that using CuO/g-C_(3)N_(4) as a catalyst,H_(2)O_(2)(30%)as an oxidant and acetonitrile as a solvent at 75℃,the yield of the target product benzophenone was 76%.Under the same conditions,the yields of CuO and g-C_(3)N_(4) were 60%and 5%,respectively.The catalytic activity of the composite CuO/g-C_(3)N_(4) was significantly improved.