氧化铝(拟薄水铝石)的孔结构研究  

Pore structure of modified alumina and its pseudoboehmite precursor

作　　者：赵琰[1] 

机构地区：[1]中石化抚顺石油化工研究院,辽宁抚顺113001

出　　处：《工业催化》2002年第1期55-63,共9页Industrial Catalysis

摘　　要：本文阐述了负载型催化剂常用载体γ Al2 O3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 30 0℃以上焙烧转化为γ Al2 O3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、θ Al2The structural characteristics of γ Al 2O 3 and its pseudoboehmite precursor were discussed. These original particles retained their respective structures and had profound effect on pore size distribution of γ Al 2O 3 converted from pseudoboehmites upon calcination at above 300℃, Method for distinguishing among amorphous pseudoboehmite and boehmite were discussed. Factors affecting pore structure of resultant γ and θ Al 2O 3 were invesigated, such as preparation method, calcination and hydrothermal treatment condition, pore enlarger and improvement on extruding or forming process.

关 键 词：氧化铝 拟薄水铝石 孔结构 孔分布 水热处理 载体 

分 类 号：TQ426.65[化学工程]