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
催化材料

CuO@HHSS催化剂制备及催化还原对硝基苯酚性能

  • 陈猛 ,
  • 杨万亮 ,
  • 段英男 ,
  • 田蒙奎
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  • 贵州大学化学化工学院,贵州贵阳 550025
陈猛(1994— ),男,硕士研究生,主要从事环境能源材料的研究;E-mail:chenm941209@163.com

收稿日期: 2020-08-11

  网络出版日期: 2020-12-15

基金资助

国家自然科学基金项目(21663009);国家重点研发计划(2018YFC1801706-01);贵州省优秀青年科技人才计划(黔科合平台人才(2017)5605号);贵州省科技计划项目(黔科合平台人才(2017)5788号);贵州省科技计划项目(黔科合支撑(2019)2835号)

Preparation of CuO@HHSS catalyst and its catalytic properties for reduction of p-nitrophenol

  • Meng Chen ,
  • Wanliang Yang ,
  • Yingnan Duan ,
  • Mengkui Tian
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  • School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China

Received date: 2020-08-11

  Online published: 2020-12-15

摘要

在水热合成复合二氧化硅空心球(HHSS)基础上,以硝酸铜为原料,采用超声辅助浸渍法制备出高分散CuO@HHSS复合催化剂。采用X射线衍射(XRD)、氮气吸附-脱附、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)等表征手段对合成催化剂的形貌和结构进行了表征。结果表明:CuO@HHSS催化剂依然保持HHSS的层次纳米中空结构;CuO颗粒高度分散在HHSS表面,而且复合催化剂具有较高的比表面积(488.9 m2/g)。以对硝基苯酚(4-NP)的催化还原反应作为反应模型,考察了CuO和CuO@HHSS催化剂对4-NP还原的催化性能。结果表明:在不同对硝基苯酚浓度下CuO@HHSS展现出优异的催化性能,在200 s内催化硼氢化钠(NaBH4)将4-NP转化为对氨基苯酚(4-AP)。

本文引用格式

陈猛 , 杨万亮 , 段英男 , 田蒙奎 . CuO@HHSS催化剂制备及催化还原对硝基苯酚性能[J]. 无机盐工业, 2020 , 52(12) : 92 -97 . DOI: 10.11962/1006-4990.2020-0424

Abstract

On the basis of preparing hollow silica sphere(HHSS) by hydrothermal method,CuO@HHSS composite catalysts were prepared with copper nitrate as raw material by ultrasonic assisted-impregnation method.The morphology and structure of the prepared catalyst were characterized by means of X-ray diffraction(XRD),nitrogen adsorption and desorption,X-ray photoelectron spectroscopy(XPS),scanning electron microscopy(SEM) and transmission electron microscopy(TEM) etc..Results showed that the CuO@HHSS catalyst still maintained the hierarchical nano hollow structure of HHSS.CuO particles were highly dispersed on the HHSS surface,which showed a high specific surface area(488.9 m2/g).The catalytic reduction reaction of p-nitrophenol(4-NP) was used as a model reaction to investigate the catalytic performance of CuO and CuO@HHSS catalysts for reduction of 4-NP.The results revealed that CuO@HHSS had excellent catalytic performance at different 4-NP concentrations and catalyze NaBH4 to convert 4-NP to p-aminophenol(4-AP) within 200 s.

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