摘要
为了考察高岭土焙烧前后性能的变化,将高岭土分别在200℃、400℃、600℃、和800℃进行焙烧,得到焙烧高岭土催化剂样品,并对催化剂进行TG-DTA、XRD和SEM等的分析及活性测试。结果表明,高岭土经过高温焙烧后转变为偏高岭土,高岭土的特征峰消失,同时孔道明显增多,甲醇转化率、二甲醚选择性和收率均提高。
In order to investigate the performance changes of kaolin before and after calcination,the kaolin was calcined at 200℃,400℃,600℃,and 800℃respectively to obtain kaolin catalyst.The catalyst was characterized by TG-DTA,XRD,SEM,etc,and tested in methanol to dimethyl ether.The results showed that the kaolin was transformed into metakaolin after high-temperature roasting;The characteristic peaks of kaolin also disappeared;At the same time,the number of pores increased significantly;The methanol conversion,dimethyl ether selectivity and yield were all improved.
作者
王鼎
刘丽娜
Wang Ding;Liu Lina(School of Chemical Engineering,Yulin Vocational And Technical College,Yulin 719000,Shaanxi,China;School of Chemistry and Chemical Engineering,Yulin University,Yulin 719000,Shaanxi,China)
出处
《工业催化》
CAS
2021年第3期69-72,共4页
Industrial Catalysis
基金
榆林市科技局项目(2019-113-02)。
关键词
催化剂工程
高岭土
焙烧
活性
catalyst engineering
kaolin
roasting
activity
