ESR MEASUREMENTS OF CONCENTRATION FOR STRONG SURFACE ACCEPTOR CENTERS ON ZEOLITES AND AL2O3 USING NITROXIDE RADICAL TEMPON

被引：22

作者：

KONOVALOVA, TA ^{[1
]}

VOLODIN, AM ^{[1
]}

CHESNOKOV, VV ^{[1
]}

PAUKSHTIS, EA ^{[1
]}

ECHEVSKII, GV ^{[1
]}

机构：

[1] NOVOSIBIRSK CATALYSIS INST,NOVOSIBIRSK 630090,USSR

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 1991年 / 43卷 / 01期

关键词：

D O I：

10.1007/BF02075437

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 method to measure concentrations of strong surface acceptor centers on aluminosilicate catalysts by their titration with a solution of TEMPON (2, 2, 6, 6-tetramethyl-4-oxypiperidine-1-oxyl) is suggested. The concentration of these centers corresponds to that of CO test molecules for the strongest acceptor centers (v(CO) greater-than-or-equal-to 2210 cm-1) obtained using IR spectroscopy. It is shown that for ZSM-5 zeolites most of these centers are localized on their external surface. external surface.

引用

页码：225 / 229

页数：5