ION-CYCLOTRON RESONANCE STUDY OF ELEMENTARY STAGES OF THE CATALYTIC-OXIDATION OF CO BY N2O IN THE PRESENCE OF VIA-GROUP METAL-IONS

被引：12

作者：

KIKHTENKO, AV ^{[1
]}

GONCHAROV, VB ^{[1
]}

ZAMARAEV, KI ^{[1
]}

机构：

[1] BORESKOV CATALYSIS INST PR AKAD LAVRENTIEVA 5,NOVOSIBIRSK 630090,RUSSIA

来源：

CATALYSIS LETTERS | 1993年 / 21卷 / 3-4期

关键词：

ION-CYCLOTRON RESONANCE; GAS PHASE CATALYTIC OXIDATION; NITROGEN MONOXIDE; CARBON MONOXIDE; MO(X)+; RATE CONSTANTS; BOND ENERGIES;

D O I：

10.1007/BF00769487

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：

Gas phase reactions of Mo+ and W+ ions with the molecules of various oxidants (NO, O2, N2O, CH2O, C2H4O) were studied using ion cyclotron resonance. In oxidation with N2O the mono-, di- and trioxide metal cations are formed consecutively. The trioxide MO3+ ions of both metals react with CO to form CO2 and MO2+ ions. In this way, catalytic reaction N2O + CO --> N2 + CO2 occurs in the gas phase with MoO3+/MoO2+ and WO3+/WO2+ couples as catalysts. The rate constants have been measured for both stages of the catalytic cycle as well as for the stages of the catalyst preparation. Metal-oxygen bond energies were estimated for MoO(x)+ and WO(x)+ species with various x. The mechanism of CO oxidation with MoO(x)+ and WO(x)+ cations as catalysts in the gas phase is discussed in comparison with that for the oxidation over classical solid oxide catalysts.

引用

页码：353 / 360

页数：8

共 24 条

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[23] FIXATION OF ATMOSPHERIC CO2 BY A SERIES OF HYDROXO COMPLEXES OF DIVALENT METAL-IONS AND THE IMPLICATION FOR THE CATALYTIC ROLE OF METAL-ION IN CARBONIC-ANHYDRASE - SYNTHESIS, CHARACTERIZATION, AND MOLECULAR-STRUCTURE OF [LM(OH)]N (N = 1 OR 2) AND LM(MU-CO3)ML (M(II) = MN, FE, CO, NI, CU, ZN L = HB(3,5-IPR2PZ)3)
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