氧化铝(拟薄水铝石)的孔结构研讨(9页).pdf

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第 10 卷第 1 期工业催化 Vol. 10 No. 1

2 0 0 2 年 1 月 INDUSTRIAL CATAL YSIS Jan . 2 0 0 2
催化剂测试与表征
2 氧2 化铝(拟薄水铝石) 的孔结构研究
赵琰
(中石化抚顺石油化工研究院,辽宁抚顺 113001)
摘要:本文阐述了负载型催化剂常用载体γ Al2O3 其前驱物拟薄水铝石的孔结构特征。这
些初始粒子保留它们的相应结构,并对拟薄水铝石在 300 ℃以上焙烧转化为γ Al2O3 的孔分布
有显著影响。介绍了如何区分无定形、拟薄水铝石和薄水铝石;考察了制备方法,焙烧、水热处
理条件,扩孔剂及改进挤条或成型对γ、θAl2O3 孔结构的影响。
关键词:氧化铝;拟薄水铝石;孔结构;孔分布;水热处理;载体
中图分类号: TQ426 65 文献标识码:A 文章编号:1008 1143 (2002) 01 0055 09
Pore structure of modif ied alumina and its pseudoboehmite precursor
ZHA O Yan
(SINOPEC Fushun Research Institute of Petroleum & Petrochemicals ,
Liaoning Fushun 113001 , China)
Abstract : The structural characteristics of γ Al2O3 and its pseudoboehmite precursor were dis
cussed. These original particles retained their respective structures and had profound effect on
pore size distribution of γ Al2O3 converted from pseudoboehmites upon calcination at above
300 ℃, Method for distinguishing among amorphous pseudoboehmite and boehmite were dis
cussed . Factors affecting pore structure of resultant γ and θAl2O3 were invesigated , such as
preparation method , calcination and hydrothermal treatment condition , pore enlarger and im
provement on extruding or forming process.
Key words :alumina ;pseudoboehmite ; pore structure ;pore size
CLC number :TQ426 65 Document code :A Article ID :100