Ru/Mn-Ce/TiO2催化剂催化湿式氧化丁二酸的反应活性和动力学研究

在二氧化钛载体中通过掺杂Ru，Mn，Ce制备了一系列用于催化湿式氧化的催化剂，利用XRD，TEM，BET等手段对催化剂进行了表征．在反应温度T=210～270℃，氧分压Po2=2．1MPa条件下，在间歇式高压反应釜中对丁二酸进行了降解实验．催化剂在反应中有很高的催化活性．催化剂在30min内对丁二酸降解的COD去除率为54．4～98．3％．Ru及Mn，Ce的氧化物对催化活性都有促进作用．建立了丁二酸催化湿式氧化的一级分段动力学模型．基于COD的一段及二段反应的活化能分别为43．74kJ／mol和54．28kJ／mol．

Reactivity and Kinetic Study on Catalytic Wet Oxidation of Succinic Acid over Ru/Mn-Ce/TiO2 Catalysts

A series of catalysts used for catalytic wet oxidation were prepared by doping Ru, Mn, Ce on TiO2 support and characterized with XRD, TEM, BET. Degradation of succinic acid (COD=7000 mg/L) in aqueous solution were carried out using a slurry autoclave at T=210～270 ℃, PO2=2.1 MPa. The catalysts exhibited remarkable reactivity in reaction. COD removal for succinic acid degradation was at the range of 54.4～98.3% for different catalysts in 30 min. Ru and the oxides of Mn, Ce all showed effectiveness on promoting catalytic reactivity. The first order kinetic models based on subsection were setup to characterize the catalytic wet oxidation of succinic acid. The active energy relates to the first and second segment based on COD is 43.74 and 54.28 kJ/mol respectively.