Self-oscillations and surface waves during CO oxidation over Co

被引：8

作者：

Bychkov, V. Yu ^{[1
]}

Tulenin, Yu P. ^{[1
]}

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

Gorenberg, A. Ya ^{[1
]}

Shashkin, D. P. ^{[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：

REACTION KINETICS MECHANISMS AND CATALYSIS | 2019年 / 128卷 / 02期

基金：

俄罗斯科学基金会;

关键词：

Self-oscillations; CO oxidation; Co; Spatiotemporal behavior; Surface waves; METHANE OXIDATION; CARBON-MONOXIDE; COBALT; NICKEL; OXIDE;

D O I：

10.1007/s11144-019-01673-y

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：

The paper looks into the temporal and spatial dynamics of a new oscillating system comprised of CO oxidation over Co. Reaction rate oscillations occurring in CO excess were similar to the ones observed over Ni. The periodic variation of oxygen imbalance together with the variation in colour changes during the oscillations indicated that the oscillations were closely connected with the reversible oxidation of Co to various Co oxides. The periodic oxidation/reduction of cobalt proceeded as surface waves. Unexpectedly, widely varying spatial structures and wavefront velocities were detected during the heating and cooling branches under identical reaction conditions: regular self-oscillations transforming into a "surface turbulence" state.

引用

页码：587 / 598

页数：12

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