DETERMINATION OF EXTERNAL SURFACE-COMPOSITION OF ZEOLITE PARTICLES BYSYNCHROTRON-RADIATION XPS

Authors
SHIMADA H MATSUBAYASHI N IMAMURA M SATO T NISHIJIMA A
Citation
H. Shimada et al., DETERMINATION OF EXTERNAL SURFACE-COMPOSITION OF ZEOLITE PARTICLES BYSYNCHROTRON-RADIATION XPS, Catalysis letters, 39(1-2), 1996, pp. 125-128
Citations number
15
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
39
Issue
1-2
Year of publication
1996
Pages
125 - 128
Database
ISI
SICI code
1011-372X(1996)39:1-2<125:DOESOZ>2.0.ZU;2-F
Abstract
Non-destructive depth profiling analysis with high surface sensitivity was performed by XPS with synchrotron radiation excitation. Compariso n of the measured atomic ratios with the simulated ones revealed the p resence of a thin Al- and Na-rich overlayer at the external surface of NaY particles. For HY zeolite particles, a gradual decrease in the Al /Si ratio from the external surface to the bulk was observed.