Study on acidity and activity of ultrastable Y zeolites

被引：0
|
作者：
He, Nongyue [1 ]
Shi, Qihong [1 ]
Zhang, Xin [1 ]
Gong, Jian [1 ]
Kuang, Yueping [1 ]
机构：
[1] Central Lab of Xiangtan Univ, Xiangtan, China
来源：
Shiyou Huagong/Petrochemical Technology | 1994年 / 23卷 / 08期
关键词：
Adsorption - Ammonia - Aromatic compounds - Infrared radiation - pH - Thermal effects;
D O I：
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学科分类号：
摘要：
By means of NH3-TPD, pyridine and 2, 6-dimethyl pyridine adsorption, IR of adsorbed pyridine, and MAT, it has been shown that the acidity and activity of ultrastable Y zeolites vary with the preparation method of the tested samples. The acid density of SRNY, FSY and HSY decreases with increasing temperature more slowly than that of USY. SRNY, FSY and HSY have a greater proportion of strong acid site than USY. It seems that 2, 6-dimethyl pyridine is adsorbed not only at B-acid site but also at L-acid site.
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页码：497 / 501
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