【摘要】 针对对苯二甲酸（TA）水污染问题,通过浸渍法制备CuO-Y₂O₃/TS-1催化剂,利用XRD、SEM、FT-IR、XRF等手段表征催化剂结构、形貌及骨架结构;构建非均相体系催化臭氧氧化降解对苯二甲酸（TA）,考察催化剂的催化性能。结果表明:当Cu（NO₃）₂·3H₂O和Y（NO₃）₃·6H₂O浸渍液浓度均为0.5 mg·L^-1、臭氧通入量为6.3mg·min^-1、催化剂投加量为1.0 g和pH=9.0时,反应30 min后,TA降解率高达99.8%。经5次循环后,TA降解率仍稳定在98.2%。进一步研究表明,CuO-Y₂O₃/TS-1催化臭氧降解TA实验符合一级反应动力学方程。更多还原

【Abstract】 Aiming at the water pollution problem of terephthalic acid（TA）, a kind of CuO-Y₂O₃/TS-1 catalyst was prepared by impregnation method. Its structure, morphology and framework structure were characterized by XRD, SEM, FT-IR and XRF. Then a heterogeneous system was built to catalyze ozone oxidation and degrade terephthalic（TA） acid, to investigate the catalytic performance of the catalyst. The results showed that the degree of TA degradation was as high as 99.8% at 30 min reaction when the concentrations of Cu（NO₃）₂·3H₂O and Y（NO₃）₃·6H₂O impregnating solution were both 0.5 mol·L^-1, the ozone flux was 6.3 mg·min^-1, the catalyst dosage was 1.0 g, and pH was 9.0. After 5 cycles of reusing catalyst, TA degradation rate was still remained at98.2%. Furthermore, ozone treatment of TA with CuO-Y₂O₃/TS-1 catalyst accorded with the first-order reaction kinetics equation.更多还原