The Reasons for Nonlinear Phenomena in Oxidation of Methane over Nickel Full article
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2018, Volume: 59, Number: 6, Pages: 810-819 Pages count : 10 DOI: 10.1134/S0023158418060149 | ||||||
| Tags | methane oxidation, nickel, heterogeneous catalysis, self-oscillations, reaction mechanism | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0001 |
Abstract:
The catalytic oxidation of methane over nickel foil is studied. It is shown that, under the oxygenlean conditions in the regime of a flow-type reactor, nonlinear phenomena can appear in the form of selfsustained oscillations of the reaction rate and the catalyst temperature. To determine the reasons for self-sustained oscillations, X-ray diffraction and mass spectrometry in the operandо mode were used. It was found that the appearance of oscillations in the methane oxidation is due to periodical oxidation–reduction of the surface layer of nickel foil; metallic nickel has a higher catalytic activity than NiO. The oscillations of the catalyst temperature are determined by the occurrence of exothermic and endothermic processes associated with the reduction of nickel oxide and methane oxidation on the surface of metallic nickel.
Cite:
Saraev A.A.
, Vinokurov Z.S.
, Shmakov A.N.
, Kaichev V.V.
, Bukhtiyarov V.I.
The Reasons for Nonlinear Phenomena in Oxidation of Methane over Nickel
Kinetics and Catalysis. 2018. V.59. N6. P.810-819. DOI: 10.1134/S0023158418060149 WOS Scopus РИНЦ AN OpenAlex
The Reasons for Nonlinear Phenomena in Oxidation of Methane over Nickel
Kinetics and Catalysis. 2018. V.59. N6. P.810-819. DOI: 10.1134/S0023158418060149 WOS Scopus РИНЦ AN OpenAlex
Original:
Сараев А.А.
, Винокуров З.С.
, Шмаков А.Н.
, Каичев В.В.
, Бухтияров В.И.
Причины возникновения нелинейных явлений в реакции окисления метана на никеле
Кинетика и катализ. 2018. Т.59. №6. С.776-786. DOI: 10.1134/S0453881118060187 РИНЦ OpenAlex
Причины возникновения нелинейных явлений в реакции окисления метана на никеле
Кинетика и катализ. 2018. Т.59. №6. С.776-786. DOI: 10.1134/S0453881118060187 РИНЦ OpenAlex
Dates:
| Submitted: | Apr 20, 2018 |
| Published print: | Nov 1, 2018 |
| Published online: | Mar 4, 2019 |
Identifiers:
| Web of science: | WOS:000460765200013 |
| Scopus: | 2-s2.0-85062637684 |
| Elibrary: | 38705232 |
| Chemical Abstracts: | 2019:795067 |
| OpenAlex: | W2918836483 |