CHARACTERIZATION OF ACID SITES IN PENTASIL ZEOLITES BY X-RAY PHOTOELECTRON-SPECTROSCOPY

被引：22

作者：

BORADE, RB ^{[1
]}

ADNOT, A ^{[1
]}

KALIAGUINE, S ^{[1
]}

机构：

[1] UNIV LAVAL,DEPT CHEM ENGN & GRAPS,ST FOY G1K 7P4,QUEBEC,CANADA

来源：

JOURNAL OF CATALYSIS | 1990年 / 126卷 / 01期

关键词：

D O I：

10.1016/0021-9517(90)90043-J

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The N1s, XPS band of pyridine chemisorbed on Al-ZSM-5 zeolite was found to be properly deconvoluted into three component peaks. In a previous contribution these three components were assigned to pyridine chemisorbed on two kinds of Brønsted acid sites and one Lewis acid site. This analysis is extended here to Fe-ZSM-5 and B-ZSM-5. Isomorphous substitution of Fe for Si or Al in the zeolite framework leads to a slight decrease in the binding energy of the N1s Lewis component. In the case of B substitution a decrease in the binding energy of all three N1s, components is observed. © 1990.

引用

页码：26 / 30

页数：5

共 17 条

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