铜盐种类及含量对Cu/ZnO/Al_(2)O_(3)催化剂结构及性能的影响  

Influence of Copper Salt Types and Contents on Structure and Properties of Cu/ZnO/Al_(2)O_(3) Catalysts

作　　者：高德宏 谢忠 胡锦婷 周文 田朋 张文艺 GAO De-hong;XIE Zhong;HU Jin-ting;ZHOU Wen;TIAN Peng;ZHANG Wen-yi(School of Chemistry and Material Engineering,Chaohu University,Anhui Hefei 238024,China)

机构地区：[1]巢湖学院化学与材料工程学院,安徽合肥238024

出　　处：《广州化工》2024年第1期64-67,共4页GuangZhou Chemical Industry

基　　金：安徽省大学生创新创业项目(S202110380026);巢湖学院人才类项目(KYQD-202003);巢湖学院校级项目(XLZ-202005、hxkt20220049、hxkt20220010)。

摘　　要：采用共沉淀法制备Cu/ZnO/Al_(2)O_(3)催化剂,固定Zn^(2+)含量为0.0062 mol和Zn/Al摩尔比为1.5,以碳酸氢钠为沉淀剂,控制Na^(+)与金属离子总量比为2.5(Na/M=2.5),通过条件试验研究了铜盐种类(硝酸铜、乙酸铜)和含量(Cu/Zn分别为2.50、2.00、1.67、1.33和1.00)对催化剂的影响。利用X射线衍射仪及固定床催化剂评价装置对催化剂结构及性能进行表征及评价。数据表明,CuO晶粒随着铜量的增加而变大,催化剂结晶度变佳,铜盐种类对催化剂活性没有产生明显的影响。Cu/ZnO/Al_(2)O_(3) catalysts were prepared by coprecipitating method.The content of Zn^(2+)was fixed at 0.0062 mol and the molar ratio of Zn/Al was 1.5.Sodium bicarbonate was used as precipitator to control the total ratio of Na^(+)to metal ions at 2.5(Na/M=2.5).The effects of copper salts(copper nitrate,copper acetate)and their contents(Cu/Zn=2.50,2.00,1.67,1.33 and 1.00,respectively)on the structure and performance of the catalyst were studied by condition tests.The structure and properties of the catalysts were characterized and evaluated by X-ray diffractometer and fixed-bed catalyst evaluation device.The data showed that CuO grain increased with the increase of the amount of copper or the crystallinity become better,and the type of copper salt had no obvious effect on the activity of the catalyst.

关 键 词：Cu/ZnO/Al_(2)O_(3)催化剂 CO_(2)加氢 CO_(2)制甲醇 

分 类 号：TQ426[化学工程] X701[环境科学与工程—环境工程] TQ223.1