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Pt-CeO_2/TiO_2催化剂催化湿式氧化苯酚废水的研究 被引量：3

Activity of Pt-CeO_2/TiO_2 Catalyst in Wet Air Oxidation of Phenol
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摘要 以TiO2为载体,利用分步浸渍法制备了Pt-CeO2/TiO2、Pt-ZrO2/TiO2、Pt-La2O3/TiO2、Pt-Pr2O3/TiO2和Pt-SnO2/TiO2催化剂,并催化湿式氧化高浓度苯酚废水。Pt-CeO2/TiO2催化剂的活性最好,在反应温度为160℃、氧分压为2.25 MPa,反应时间为2 h的条件下,苯酚和COD的去除率分别为87.53%和72.06%。进一步研究助剂含量对催化剂性能的影响,当CeO2负载量为12.5%时,催化剂Pt-CeO2/TiO2的催化性能最佳。XRD和TEM结果表明,助剂CeO2的引入起到降低Pt的粒径,提高Pt在载体表面的分散度的作用。 Pt/TiO2,Pt-CeO2/TiO2,Pt-ZrO2/TiO2,Pt-La2O3/TiO2,Pt-Pr2O3/TiO2 and Pt-SnO2/TiO2 catalysts were prepared by the impregnation method,and their catalytic activities were studied through catalytic wet air oxidation experiments of high-concentration phenol wastewater. The results show that the catalytic activity of Pt-CeO2/TiO2 is the highest among those catalysts;under the conditions of reaction time 2 h,160 ℃ and 2.25 MPa, the removal rates of phenol and COD are about 87.53% and 72.06% , respectively. When the content of CeO2 is 12.5%, the Pt-CeO2/TiO2 catalyst has the highest catalytic activity. XRD and TEM results show that the CeO2 additive can reduce the size of Pt and improve the dispersion of Pt.
作者 常海娟 刘忠生 王学海 程明珠
机构地区 辽宁石油化工大学环境与生物工程学院 中国石化抚顺石油化工研究院
出处 《当代化工》 CAS 2013年第4期418-420,433,共4页 Contemporary Chemical Industry
关键词 催化湿式氧化 稀土氧化物 氧化铈助剂 Pt—CeO2 TIO2催化剂 Catalytic wet air oxidation Rare earth oxides Ceria additives Pt-CeO2/TiO2 catalyst
分类号 TQ426 [化学工程]
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参考文献20

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同被引文献43

  • 1赵雷,孙志忠,马军.金属催化臭氧化应用在水处理中的机理研究进展[J].现代化工,2007,27(z1):78-82. 被引量：18
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当代化工
2013年 第4期

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