Abstract:Mn/rare earth composite catalyst based on the Y-type molecular sieve carrier were prepared by an impregnation-calcination method. The effects of calcination temperature, calcination time, metal ion concentration in impregnated liquid and rare-earth species on the activity of the catalysts were studied. The heterogeneous catalytic oxidation electrolysis system of Mn/rare earth composite was built by embedding the catalysts in glass fibers to develop a reaction bed for treating a simulated phenolic wastewater. The SEM images showed that the structure of a Y-type molecular sieve remained its original after the introduction of rare earth and Mn elements. The XRD patterns revealed that rare earth and Mn oxides could not be observed on the surface of the Y-type molecular sieve carrier. The optimum preparation conditions of the Mn-RE/Y catalysts were 6wt% manganese and 3wt% rare earth of cerium in the impregnated liquid, the calcination temperature of 550℃, calcination time of 5 hours, respectively. The cooperative electro-catalytic oxidization of Mn-RE/Y composite catalyst to organic in the anodic-cathode compartment strengthened the degradation effects of phenolic wastewater.
刘咏, 李妍, 赵仕林, 操飞, 杨洪波. 锰-稀土/Y分子筛复合电催化处理含酚模拟废水[J]. 中国环境科学, 2011, 31(5): 740-747.
LIU Yong, LI Yan, ZHAO Shi-Lin, CAO Fei, YANG Hong-Bo. Study on the treatment of the phenolic simulation wastewater by Mn-RE/Y zeolite composite heterogeneous catalytic electro-oxidation. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(5): 740-747.