摘要
用ＮＨ４Ｃｌ水溶液及不同温度水蒸气对Ｙ型沸石进行改性，并对改性后的Ｙ型沸石催化剂采用ＴＰＤ、ＩＲ、ＸＲＤ。
Y zeolites were modified by steaming and NH 4Cl solution.The influence of modification on the structure and acidity of Y zeolites was investigated.Modified zeolites were studied by TPD,XRD,BET and MP methods to characterize their pore structure,crystal structure and surface acidic properties. When HY was modified by steaming,the crystal type remained unchanged.With increasing steaming temperature,the total acidic comtent,Bronsted acidic Content,crystallinity,surface area of micropore and total surface area of modified Y zeolites all lowered.
出处
《石油化工》
CAS
CSCD
北大核心
1997年第5期302-305,共4页
Petrochemical Technology
