微波催化氧化处理正丁酸废水Ni-Co-Ce-O催化剂的制备及表征  

Preparation and characterization of Ni-Co-Ce-O catalysts in treatment butyric acid wastewater by MIOP

作　　者：孙建华[1] 龙腾锐[1] 林于廉[1] 吴福平[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《环境工程学报》2011年第1期90-94,共5页Chinese Journal of Environmental Engineering

摘　　要：采用微波催化氧化处理正丁酸模拟废水,以COD去除率为评价指标,对固相-焙烧法制备的3个系列共45种催化剂进行筛选,通过正交实验对催化剂制备工艺进行优化,并对优选出的催化剂进行XRD和SEM表征。结果表明,NiO+Co2O3+CeO2(Ni∶Co=1∶1、NiO+Co2O3/CeO2=1∶4)为筛选出的最优催化剂;Ni-Co-Ce-O催化剂最优制备条件为Ni:Co摩尔比1∶2、(NiO+Co2O3)/CeO2质量比5%、研磨时间40 min、焙烧温度450℃、焙烧时间3 h,此条件下制备的催化剂催化效能最高,COD去除率达67%。45 kinds of catalysts belonging to 3 series were prepared by solid phase calcination.These catalysts were used in treating butyric acid wastewater by microwave catalytic oxidation process,and COD removal rate was used as an indicator to evaluate effects of catalysts.The preparation process was optimized with orthogonal experiments and the preferred was characterized by scanning electron microscope（SEM） and X-ray diffraction（XRD）.Results indicated that the Ni-Co-Ce-O was the best catalyst（Ni∶Co=1∶1,NiO＋Co2O3/ CeO2=1∶4）.The optimal preparation conditions were： Ni∶Co molar ratio of 1∶2,（NiO＋Co2O3）/CeO2 mass ratio of 5%,grinding time of 40 min,calcination temperature of 450 ℃ and calcination time of 3 hours.Under these conditions,catalytic efficiency was highest and about 67% of COD removal rate could be obtained.

关 键 词：微波催化氧化 固相-焙烧法 Ni-Co-Ce-O催化剂 正交实验 

分 类 号：X703.1[环境科学与工程—环境工程]