New Oscillating System: Co Oxidation over Ni

被引：15

作者：

Bychkov, V. Yu. ^{[1
]}

Tulenin, Yu. P. ^{[1
]}

Slinko, M. M. ^{[1
]}

Gordienko, Yu. A. ^{[1
]}

Korchak, V. N. ^{[1
]}

机构：

[1] Russian Acad Sci, Semenov Inst Chem Phys, Kosygina Str 4,GSP-1, Moscow 119991, Russia

来源：

CATALYSIS LETTERS | 2018年 / 148卷 / 02期

基金：

俄罗斯科学基金会;

关键词：

Oscillations; CO oxidation; Ni; Spatiotemporal behavior; Surface waves; CARBON-MONOXIDE; CATALYTIC-OXIDATION; TEMPERATURE OSCILLATIONS; KINETIC OSCILLATIONS; MASS-SPECTROMETRY; METHANE OXIDATION; NICKEL-CATALYST; METAL-CATALYSTS; BEHAVIOR; HYDROGEN;

D O I：

10.1007/s10562-017-2283-2

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：

For the first time, the oscillatory behavior during CO oxidation over Ni foil has been discovered under atmospheric pressure conditions in the temperature range of 570-630 A degrees C. The oscillatory behavior occurred in CO excess in contrast to the well-known oscillations during CO oxidation over Pt, Pd, Ir, and Ru. The periodic variation of oxygen imbalance together with the variation of color changes during the oscillations indicated that the oscillations were closely connected with the reversible oxidation of Ni to NiO. The observation of oscillations in a pulse supply mode proved their kinetic origin. The oscillations were accompanied by the propagation of the oxidation and reduction fronts which could be observed with the naked eye. Temporal and spatial self-organization during CO oxidation over Ni foil. [GRAPHICS] .

引用

页码：653 / 659

页数：7

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