DECREASE IN THE REDOX PROPERTIES OF SAPO-37 ZEOLITE WITH INCREASING SI CONTENT

Authors
SU BL BARTHOMEUF D
Citation
Bl. Su et D. Barthomeuf, DECREASE IN THE REDOX PROPERTIES OF SAPO-37 ZEOLITE WITH INCREASING SI CONTENT, Bulletin de la Societe chimique de France, 131(7), 1994, pp. 730-732
Citations number
10
Categorie Soggetti
Chemistry Inorganic & Nuclear",Biology,Chemistry
Journal title
Bulletin de la Societe chimique de France → ACNP
ISSN journal
00378968
Volume
131
Issue
7
Year of publication
1994
Pages
730 - 732
Database
ISI
SICI code
0037-8968(1994)131:7<730:DITRPO>2.0.ZU;2-5
Abstract
The changes in the redox properties of SAPO-37, a silicoaluminophospha te-based catalyst, were using EPR spectroscopy. The number of oxidizin g and reducing sites decreased as the Si content rose. This is related to the clustering Of SiO4 tetrahedra forming Si islands. The results confirm the hypothesis that the redox sites are associated with the sa me species as acid-base centers, ie Si-OH-Al entities.