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

被引:72
作者
KUCHEROV, AV
GERLOCK, JL
JEN, HW
SHELEF, M
机构
[1] FORD MOTOR CO,FORD RES LAB,DEARBORN,MI 48121
[2] ND ZELINSKII INST ORGAN CHEM,MOSCOW,RUSSIA
关键词
D O I
10.1021/j100069a020
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
A flow cell was designed to study the oxidation state of copper ions in Cu-ZSM-5 in situ at high temperatures. In a thoroughly purified He flow or in vacuum there is no spontaneous thermal reduction of the cupric ions up to 500 degrees C. The addition of propene to the flow suppresses the Cu2+ ESR signal even at room temperature.
引用
收藏
页码:4892 / 4894
页数:3
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