无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2012, Vol. 44 ›› Issue (10): 61-.

• 论文 • 上一篇    

Fe2O3/Ni2O3/Al2O3催化剂制备及其催化氧化靛蓝废水研究

杨 卓,梅 华,陈晓蓉,於德伟,高传林   

  1. 南京工业大学化学化工学院,江苏南京210009
  • 出版日期:2012-10-10 发布日期:2012-10-12

Preparation of Fe2O3/Ni2O3/Al2O3 catalyst and study on its catalytic oxidation for indigo wastewater

 YANG  Zhuo, MEI  Hua, CHEN  Xiao-Rong, YU  De-Wei, GAO  Chuan-Lin   

  1. School of Chemistry and Chemical Engineering,Nanjing University of Technology,Nanjing 210009,China
  • Online:2012-10-10 Published:2012-10-12

摘要: 以三氧化二铝为载体,采用浸渍沉淀法制备系列Fe2O3/Ni2O3/Al2O3催化剂。采用TG-DTA,XRD及ESEM等技术对催化剂进行表征,确定催化剂的最佳焙烧温度为460 ℃。以次氯酸钠为氧化剂,同时考察m(三氧化二镍)/m(三氧化二铝)、m(三氧化二铁)/m(三氧化二镍)、m(次氯酸钠)∶m(靛蓝废水)、pH对印染靛蓝废水处理的影响。结果表明:m(三氧化二镍)/m(三氧化二铝)=0.3,m(三氧化二铁)/m(三氧化二镍)=0.04,m(次氯酸钠)∶m(靛蓝废水)=1∶11,pH=7,反应温度为20 ℃,常压反应时间为2 h时,COD的去除率为95.3%。

关键词: 浸渍沉淀法, Fe2O3/Ni2O3/Al2O3催化剂, 次氯酸钠, 活性氧 , 靛蓝废水

Abstract: A series of Fe2O3/Ni2O3/Al2O3 catalysts were prepared by the method of impregnation and precipitation with Al2O3 as supporter. The catalysts were characterized by thermogravimetry,X-ray diffraction(XRD),scanning electron microscope (ESEM).Results indicated the optimal calcined temperature was 460 ℃.The effects of the different mass ratios of Ni2O3/Al2O3,Fe2O3/Ni2O3/Al2O3 and NaClO/indigo wastewater,reaction temperature,and pH on the decomposition rate of dyeing indigo wastewater were investigated by using NaClO as oxidant.Results showed that the highly COD conversion of indigo wastewater could reach up to 95.3% at atmosphere pressure under such reaction conditions:m(Ni2O3)/m(Al2O3)=0.3,m(Fe2O3)/m(Ni2O3)=0.04,m(NaClO)∶m(indigo wastewater)=1∶11,pH=7, reaction temperature was 20 ℃,and reaction time was 2 h.

Key words: impregnated precipitation, Fe2O3/Ni2O3/Al2O3 catalyst;NaClO;active oxygen;indigo wastewater

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