纳米金刚石-石墨烯核壳结构直接催化苯乙炔选择加氢反应的研究

摘要

The nanodiamond-graphene core-shell (ND@G) was used as the catalyst for the phenylacetylene selective hydrogenation.The catalyst was characterized using X-ray diffraction (XRD),Raman spectra and TEM.The effects of temperature,pressure,flow rate of hydrogen and liquid on the ND@G catalyst for the phenylacetylene selective hydrogenation were studied under continuous flow conditions.The products were analyzed qualitatively and quantitatively by high performance liquid chromatograph (HPLC).The results showed that there was a certain catalytic activity of ND@G catalyst for phenylacetylene selectivity hydrogenation.The optimum reaction temperature was 60 ℃.The optimum pressure was 2 MPa.The optimum hydrogen quantity was 36 mL/min.The optimum flow rate was 0.6 mL/min.%采用纳米金刚石-石墨烯核壳材料(ND@G)作为苯乙炔选择加氢催化剂.利用X射线衍射(XRD)、拉曼光谱以及透射电镜(TEM)等技术对ND@G催化剂进行了表征.在连续流动状态下通过一系列实验考察了温度、压力、氢气流速以及液体流速对ND@G催化苯乙炔选择加氢性能的影响,利用高效液相色谱仪HPLC对产品进行定性和定量分析.结果表明,ND@G对苯乙炔选择加氢反应具有一定的催化活性,反应的最佳温度为60 ℃,最佳压力为2 MPa,最佳氢气量为36 mL/min,最佳流速为0.6 mL/min.