Ru/C催化剂的制备及其催化双酚A加氢的研究

Preparation of Ru/C catalysts for hydrogenation of bisphenol A

在碳酸丙烯酯(PC)中,用氢气还原氯化钌制备粒径均一的Ru纳米颗粒,并直接吸附到载体M(M=Si O2、Al2O3、Ti O2、活性炭)上,制得Ru/M催化剂。研究表明,以活性炭作为载体时,其催化效果最佳。采用X射线衍射(XRD)、X射线光电子能谱(XPS)、高分辨透射电镜(TEM)和比表面分析(BET)等手段对Ru/C催化剂的结构和表面特性进行表征。结果表明,Ru纳米颗粒在活性碳载体上均匀分散,粒径小于4 nm。以双酚A加氢反应对该催化剂进行考核,在120℃、4.0 MPa的反应条件下,双酚A的转化率为100%,氢化双酚A(HBPA)的选择性可达97.9%,表明该催化剂具有良好的双酚A催化加氢性能。

A carrier-supported ruthenium catalyst（ Ru / M） is prepared by a simple direct adsorption method.Among the catalysts tested,Ru / C catalyst exhibits the best catalytic reactivity for the hydrogenation of bisphenol A by using isopropanol as a solvent. The structure and surface characteristics of Ru / C catalyst are characterized by X-ray diffraction（ XRD）,X-ray photoelectron spectroscopy（ XPS）,high-resolution transmission electron microscopy（ TEM） and specificsurface areaanalysis（ BET）. The results indicate that Ru nanoparticles are homogeneously dispersed in the activated carbon and particle sizes are less than 4 nm. When Ru / C is used to catalyze the hydrogenation of bisphenol A to hydrogenated bisphenol A（ HBPA）,the complete conversion of bisphenol A with above 97. 9% of seleetivity can be achieved at 120℃ and 4. 0 MPa.