模拟印染废水处理中贵金属钯催化剂的研究  

Study of Precious Metal Palladium Catalyst for Treatment of Simulated Dyeing Wastewater

作　　者：张永利[1] 陈恩杰[1] 史册[1] 莫金莲[1] 王庆雨[1] 

机构地区：[1]韩山师范学院,广东潮州521041

出　　处：《当代化工》2012年第9期950-953,共4页Contemporary Chemical Industry

基　　金：2009广东省自然科学基金项目(9452104101003815);2010广东省自然科学基金项目(10152104101000010);2011年广东省高等学校人才引进专项资金

摘　　要：选用三叶草状γ-Al2O3为载体,采用等量浸渍法制备了负载型复合催化剂,各组成分比例为:Pd∶Cu∶Fe∶Ce∶La=0.5∶0.5∶0.5∶0.75∶0.75,其中,Pd、Cu、Fe为催化剂活性组分,Ce、La为催化助剂。用甲基橙模拟偶氮染料废水,采用催化湿式氧化法对其进行处理(甲基橙模拟废水的浓度为238 mg/L)。分别测定不同反应时间水样的pH和吸光度,对其活性进行评价;分别对使用前后的催化剂进行XRD和FT-IR表征,对其稳定性进行评价。本实验制备的贵金属钯复合催化剂处理模拟废水,脱色率可达99%以上。使用前后催化剂的XRD和FT-IR谱图表征无明显变化。结果表明,贵金属钯复合催化剂活性高,稳定性好。Using clover leaf shape y -A1203 as the carrier, supported composite catalyst was prepared by the impregnation method. Proportion of each component was Pd：Cu：Fe：Ce：La=0.5：0.5：0.5：0.75：0.75. Pd, Cu and Fe were used as catalyst active components; Ce and La were used as catalytic promoters. Methyl orange simulated azo dyeing wastewater （238 mg/L） was treated with the catalyst by CWAO process. The pH and absorbance were measured at different reaction times to evaluate its activity. The catalyst before and after using was respectively characterized by XRD and FT-IR to evaluate its stability. The decolorization rate of treated wastewater with prepared precious metals palladium composite catalyst in this experiment was up to 99% or more. The XRD and FT-IR spectra had no significant changes. The results show that the precious metal palladium composite catalyst has high activity and good stability.

关 键 词：模拟印染废水 贵金属钯复合催化剂 活性 稳定性 

分 类 号：TQ423.93[化学工程]