IN-SITU DETERMINATION BY ESR OF THE OXIDATION-STATE OF COPPER IN CU-ZSM-5 IN FLOWING HE AND O-2 UP TO 500-DEGREES-C

Authors
KUCHEROV AV GERLOCK JL JEN HW SHELEF M
Citation
Av. Kucherov et al., IN-SITU DETERMINATION BY ESR OF THE OXIDATION-STATE OF COPPER IN CU-ZSM-5 IN FLOWING HE AND O-2 UP TO 500-DEGREES-C, Journal of physical chemistry, 98(18), 1994, pp. 4892-4894
Citations number
8
Categorie Soggetti
Chemistry Physical
Journal title
Journal of physical chemistry → ACNP
ISSN journal
00223654
Volume
98
Issue
18
Year of publication
1994
Pages
4892 - 4894
Database
ISI
SICI code
0022-3654(1994)98:18<4892:IDBEOT>2.0.ZU;2-C
Abstract
A flow cell was designed to study the oxidation state of copper ions i n Cu-ZSM-5 in situ at high temperatures. In a thoroughly purified He f low or in vacuum there is no spontaneous thermal reduction of the cupr ic ions up to 500 degrees C. The addition of propene to the flow suppr esses the Cu2+ ESR signal even at room temperature.