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CuO-Ru/A2lO3催化臭氧化降解苯乙酮的研究 被引量：5

CuO-Ru/Al_2O_3 Catalytic Ozonation of Acetophenone in Water
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摘要 采用浸渍法制备了以活性Al2O3为载体的双组分催化剂CuO-Ru/Al2O3,利用该催化剂催化臭氧化降解了苯乙酮.结果表明,贵金属钌掺杂能显著提高CuO/Al2O3催化臭氧化苯乙酮的降解效率,如在相同条件下处理30 min后,单独臭氧氧化、CuO/Al2O3/O3和CuO-Ru/Al2O3/O3对苯乙酮水溶液的COD去除率分别为6.3%、20.0%和54.0%.pH对CuO-Ru/Al2O3催化臭氧化降解苯乙酮的效率并没有影响,但与单独臭氧化相比,该催化臭氧化体系更适合在中性或酸性条件下应用.CuO-Ru/Al2O3对水中臭氧有较好的催化分解活性,臭氧分解的速率常数达2.58×10-3s-1,高于二次水中臭氧的分解速率常数1.19×10-3s-1.叔丁醇的试验结果表明,CuO-Ru/Al2O3/O3降解苯乙酮反应遵循羟基自由基(.OH)反应机制. Two-component CuO-Ru based on active Al2O3（CuO-Ru/Al2O3） catalyst was prepared by incipient wetness impregnation and used to catalytic ozonation of acetophenone（AP）.The results showed that doping Ru could significantly improve the catalytic activity of CuO/Al2O3.For example,the COD removal rates of AP solution after 30min by ozonation alone,CuO/Al2O3/O3,and CuO-Ru/Al2O3/ O3 were 6.3%,20.0% and 54.0%,respectively.The change of pH almost had no affect on degradation efficiency of AP.However,a comparison of COD removal between ozonation alone and catalytic ozonation indicated that CuO-Ru/Al2O3 catalyst was more suitable for application in neutral or acidic condition.CuO-Ru/Al2O3 catalyst could accelerate decomposition rate of ozone in water,and its decomposition rate constant reached 2.58×10^-3 s^-1 while that of ozone alone in double-water was 1.19×10^-3 s1.The experimental result of t-butanol indicated that CuO-Ru/Al2O3 catalytic ozonation of AP followed a radical-type mechanism.
作者 张华 石锐 臧兴杰 童少平 马淳安
机构地区 浙江工业大学化学工程与材料学院
出处 《环境科学》 EI CAS CSCD 北大核心 2010年第3期715-719,共5页 Environmental Science
基金 国家自然科学基金项目(50578146) 浙江省自然科学基金项目(Y5080178)
关键词 CuO-Ru/Al2O3催化剂 苯乙酮 COD 吸附 ·OH CuO-Ru/Al2O3 catalyst acetophenone（AP） COD adsorption hydroxyl radical（·OH）
分类号 X703.1 [环境科学与工程—环境工程]
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参考文献24

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