摘要
以Zr(NO3)4·5H2O和Na2SiO3·9H2O为原料,利用共沉淀法制备前驱体,浸渍添加稀土Ce和La,一定温度焙烧后制得掺杂稀土S2O8^2-/Zr O2-SiO2固体超强酸。通过XRD、FT-IR和SEM对催化剂进行表征,以硬脂酸的酯化合成反应为探针,考察制备条件对催化剂性能的影响以及催化剂的重复使用率。结果表明,相对于未改性的S2O8^2-/ZrO2-SiO2催化剂,添加了Ce或La的固体超强酸酯化催化活性及重复使用性能均有提高。
Sulfated zirconia-silica impregnated with Ce or La were prepared by a co-precipitation method from Zr(NO3)4·5H2O and Na2SiO3·9H2O material.Catalysts structural properties were characterized by X-ray diffraction(XRD),FT-IR,TG and SEM.The catalytic activity was valued in the esterification of butyl stearate.Influence of various preparation parameters on catalytic performance and catalyst reusability were studied.The results showed that the activities and stabilities of the S2O8^2-/ZrO2-SiO2 catalysts modified by rare earths were improved,and the reuse capacity was also enhanced.
作者
曾飞虎
陈崇城
陈晓玲
王志文
Zeng Feihu;Chen Congcheng;Chen Xiaoling;Wang Zhiwen(Liming Vocational University,Quanzhou 362000,Fujian,China)
出处
《工业催化》
CAS
2020年第10期42-47,共6页
Industrial Catalysis
基金
福建省教育厅A类科技研究项目计划JA12411。
关键词
催化化学
固体超强酸
稀土改性
酯化反应
硬脂酸正丁酯
catalytic chemistry
solid superacid
rare earth modification
esterification reaction
butyl stearate
作者简介
通讯联系人:曾飞虎,1985年生,男,福建省晋江市人,讲师,主要研究方向为工业催化、复合材料。
