氧化锆负载双金属复合催化剂的制备与性能表征  

Preparation and Property Characterization of Zirconia Supported Bimetallic Catalyst

作　　者：郭一然 侯怡劭 孟蓬 杨帆[1] 陈宇[1] 刘雯[1] 贾士芳[1] 石国亮[1] Guo Yiran;Hou Yishao;Meng Peng;Yang Fan;Chen Yu;Liu Wen;Jia Shifang;Shi Guoliang(Taiyuan University of Science and Technology,Taiyuan Shanxi 030024,China)

机构地区：[1]太原科技大学,山西太原030024

出　　处：《煤化工》2020年第2期44-47,共4页Coal Chemical Industry

基　　金：山西省科技重大专项项目(20191102004);山西省高等学校大学生创新创业训练计划项目(2019370);山西省高等学校教学改革项目(J2018123);太原科技大学校级教学改革研究项目(201851,JG2019002)。

摘　　要：以硝酸铝为助剂,硝酸铜为铜物种前驱体,正丁醇锆为载体前驱体,采用蒸汽水解法一步合成出了具有纯四方相结构的负载型介孔Al-Cu/ZrO2复合双金属催化剂。通过对复合催化剂进行XRD、N2吸附、H2-TPR等表征,分析了不同铝助剂含量和铜含量对复合催化剂结构性能的影响规律。结果表明,当铝助剂质量分数为3%、铜质量分数为20%时,复合催化剂具有良好的晶相结构,比表面积可达100 m^2/g,铜物种还原温度为175℃~238℃且与氧化锆载体表面之间相互作用强、分散性高。Mesoporous structured Al-Cu/ZrO2 catalysts with pure tetragonal phase were prepared by the one-step vapor hydrolysis method,using zirconium n-butoxide,copper nitrate and aluminum nitrate as precursors respectively.The catalysts were characterized by means of XRD,N2 adsorption and H2-TPR.The effects of different aluminum and copper contents on the structure and performance of the composites were studied.The results showed that when the mass fraction of aluminum was 3%and the mass fraction of copper was 20%,the composites presented good crystalline phase and high specific surface area of 100 m^2/g.Moreover,the copper species had reduction temperature of 175℃-238℃,strong interaction with zirconia carrier and high dispersion on the zirconia surface.

关 键 词：氧化锆 铝 铜 双金属催化剂 蒸汽水解法 性能 表征 

分 类 号：O643.3[理学—物理化学]