一步水热法制备CuO空心球及其CO氧化性能的研究  

Study on one-step hydrothermal synthesis of CuO hollow spheres for CO oxidation

作　　者：高唯 吴婷 程锴 朱君江 夏明桂 GAO Wei;WU Ting;CHENG Kai;ZHU Jun-jiang;XIA Ming-gui(School of Chemistry and Chemical Engineering,Wuhan Textile University,Wuhan 430200,China)

机构地区：[1]武汉纺织大学化学与化工学院,湖北武汉430200

出　　处：《应用化工》2022年第9期2565-2569,共5页Applied Chemical Industry

基　　金：国家自然科学基金青年项目(22002111);湖北省科技厅中央引导地方科技发展专项(2019ZYYD073);湖北省教育厅高等学校优秀中青年科技创新团队计划(T2020011)。

摘　　要：一步水热法合成了氧化铜(CuO)空心球,并将其用于CO催化氧化。采用X-射线衍射(XRD)、X-射线光电子能谱(XPS)等表征手段,分析了催化剂的化学组成及表面价态;采用扫描电子显微镜(SEM)研究了时间、尿素及聚乙烯吡咯烷酮(PVP)添加量等制备条件对催化剂形貌结构的影响。结果表明,当三水合硝酸铜量为5 mmol,反应时长为10 h,尿素添加量为90 mmol,PVP的添加量为1 g时,所得空心球CuO-90+1 g PVP的形貌及大小较为均一。由此得到的CuO空心球可在150℃实现CO的完全转化,且有很好的稳定性。Copper oxide(CuO)hollow spheres were synthesized by a one-step hydrothermal method and used for CO catalytic oxidation.The catalysts were characterized by XRD,XPS and SEM,and the effects of preparation conditions,such as the hydrothermal time,the amounts of urea and polyvinylpyrrolidone(PVP)added to the synthesis process,on the morphology of CuO were studied.The results showed that CuO-90+1 g PVP was prepared at the conditions:5 mmol copper nitrate trihydrate,10 h hydrothermal time,90 mmol urea,and 1 g PVP,its exhibited uniform hollow sphere structure.The material showed full CO conversion at 150℃and had good stability during the reaction.

关 键 词：CuO空心球 尿素 PVP CO氧化 

分 类 号：TQ031.7[化学工程] TQ032