The Effect of Non-Framework Aluminum on the Stability and Activity of REY Zeolite

被引：0
|
作者：
Chen Beiyan
Shen Ningyuan
He Mingyuan
Tian Huiping
Da Zhijian (Research Institute of Petroleum Processing
机构：
来源：
China Petroleum Processing and Petrochemical Technology | 2005年 / 02期
关键词：
rear earth; Y zeolite; hydrothermal stability; non-framework aluminum;
D O I：
暂无
中图分类号：
O643.36 [催化剂];
学科分类号：
摘要：
The present study is focused on the influence of a routine step, washing, following the preparation of calcined rare earth exchanged Y zeolite, on its hydrothermal stability. The hydrothermal stability of REY products, which were washed by different reagents, was observed and characterized by XRD, ICP, NMR, etc. The results reveal that the amount and the chemical type of the acidic media used for washing can significantly influence the content of remaining non-framework aluminum (NFA) and consequently further affect the hydrothermal stability of the washed REY products. The content of remaining non-framework aluminum can be well correlated with the crystallinity of REY products.
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页码：47 / 51
页数：5
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