Preparation and investigation of a highly active, stable and selective 2Pt/3CeO2-TiO2 catalyst for catalytic wet oxidation of phenolic compounds

Abstract

通过将Pt负载在不同浓度比例的CeO2TiO2混合载体上，（CeO2的质量分数为1wt.%、3wt.%、10wt.%、20wt.%），制备得到2Pt/xCeO2TiO2催化剂，并用于催化湿式氧化降解1000ppm的苯酚水溶液。实验中的载体先通过水热法和湿式沉淀（HWD）法制备，再负载2.0％的Pt。并对五种不同组成在苯酚氧化生成二氧化碳（CO2）的实验中进行了全面的研究。其中实验是在160℃和2.0MPaO2的间歇反应器中进行。反应后的液体用总有机碳分析仪（TOC）和高效液相色谱（HPLC）进行分析。结果表明：催化剂组成对催化活性和稳定性有很大的影响。实验发现2%Pt/3CeO2TiO2的催化...Pt supported on CeO2-TiO2 catalysts were synthesized with varied concentrations of CeO2 at 1, 3, 10, and 20 wt. % for being used in catalytic wet air oxidation (CWAO) of aqueous solution of phenol (1000 ppm). The supports were prepared by hydrothermal and wet deposition (HWD) method and impregnated with 2.0 wt. % of Pt. The five different compositions of CeO2 in Pt/ CeO2-TiO2 were all investigated...学位：工学硕士院系专业：化学化工学院_工程硕士(化学工程)学号：2042015115469