Cu-SBA-15催化湿式过氧化氢氧化水溶液中罗丹明B

采用水热晶化法合成了不同含铜量的Cu—SBA-15介孔分子筛，并且用XRD、N2吸附、TEM以及uV—vis对所合成的样品进行表征。以Cu—SBA-15为催化剂，H2O2为氧化剂，催化湿式过氧化水溶液中的罗丹明B，主要考察H2O2浓度、催化剂用量、处理温度、初始pH等因素对罗丹明B氧化效果的影响。结果表明，在同样的处理条件下罗丹明的脱色率明显高于TOC去除率，处理温度、初始pH对罗丹明B的脱色与氧化有重要影响。在罗丹明B初始浓度100mg／L，H2O2初始浓度1．8g／L，催化剂量0．3g／L，温度60℃，pH为7．0，处理时间100min时，罗丹明B的脱色率为98．6％，TOC去除率为62．8％。

Catalytic wet peroxide oxidation of Rhodamine B solutions over Cu-SBA-15 mesoporous materials

Cn-SBA-15 mesoporous materials with different Cu contents were synthesized by direct synthesis method,and characterized by XRD,N2 adsorption,TEM and UV-vis. The catalytic wet hydrogen peroxide oxida- tion was carried out using Cu-SBA-15 as catalyst and H2O2 as oxidant. The influencing factors on oxidation,such as H2O2 concentration, catalyst dosage, reaction temperature, and pH, were examined by considering both the col- or removal of Rhodamine B and TOC removal. The results of this study show that the color removal of Rhodamine B is higher than TOC removal obviously. It was found that the reaction temperature and initial pH in solution sig- nificantly affected the oxidation efficiency. Under the conditions of Rhodamine B initial concentration of 100 mg/ L, H202 concentration of 1.8 g/L, catalyst dosage of 0.4 g/L, pH = 7.0, the Rhodamine B color removal reaches 98.6% and TOC removal reaches 62.8% at 60℃ after treatment for 100 min.