Temperature Hysteresis in the Reaction of Methane Oxidation on a Palladium-Doped Manganese Hexaaluminate Catalyst Full article
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2018, Volume: 59, Number: 1, Pages: 70-82 Pages count : 13 DOI: 10.1134/s0023158418010160 | ||||
| Tags | manganese hexaaluminate, palladium doping, methane oxidation, thermal hysteresis, TPR-O2, in situ XRD analysis | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Foundation for Basic Research | 15-03-05459 |
Abstract:
A study of the Pd-containing catalyst based on manganese hexaaluminate by X-ray diffraction analysis, transmission electron microscopy, thermo-programmed reduction with hydrogen, and thermoprogrammed oxidation showed the hysteresis manifested itself in a difference between the temperature dependences of its catalytic activity in the oxidation of methane under the conditions of sample heating or cooling is related to the decomposition of PdO to metallic palladium at temperatures higher than 700–800°C and the subsequent formation of PdO nanoparticles, which are localized on the surface of metallic Pd (30–50 nm) in the form of polycrystalline films with a thickness of 2–5 nm, at temperatures lower than 600–700°C. A near-surface oxide film is formed under the conditions of cooling in oxygen-containing atmospheres, including in the presence of methane. The value of the hysteresis depends on the heat treatment temperature of the catalyst, and it reaches a maximum on the catalysts calcined at 900 and 1000°C.
Cite:
Yashnik S.A.
, Vinokurov Z.S.
, Salnikov A.V.
, Ishchenko A.V.
, Kaichev V.V.
, Ismagilov Z.R.
Temperature Hysteresis in the Reaction of Methane Oxidation on a Palladium-Doped Manganese Hexaaluminate Catalyst
Kinetics and Catalysis. 2018. V.59. N1. P.70-82. DOI: 10.1134/s0023158418010160 WOS Scopus РИНЦ AN OpenAlex
Temperature Hysteresis in the Reaction of Methane Oxidation on a Palladium-Doped Manganese Hexaaluminate Catalyst
Kinetics and Catalysis. 2018. V.59. N1. P.70-82. DOI: 10.1134/s0023158418010160 WOS Scopus РИНЦ AN OpenAlex
Original:
Яшник С.А.
, Винокуров З.С.
, Сальников А.В.
, Ищенко А.В.
, Каичев В.В.
, Исмагилов З.Р.
Температурный гистерезис в реакции окисления метана на допированном палладием Mn-гексаалюминатном катализаторе
Кинетика и катализ. 2018. Т.59. №1. С.92-104. DOI: 10.7868/S0453881118010100 РИНЦ OpenAlex
Температурный гистерезис в реакции окисления метана на допированном палладием Mn-гексаалюминатном катализаторе
Кинетика и катализ. 2018. Т.59. №1. С.92-104. DOI: 10.7868/S0453881118010100 РИНЦ OpenAlex
Dates:
| Submitted: | Feb 20, 2017 |
| Published print: | Jan 1, 2018 |
| Published online: | Mar 6, 2018 |
Identifiers:
| Web of science: | WOS:000426796900008 |
| Scopus: | 2-s2.0-85043273073 |
| Elibrary: | 35496842 |
| Chemical Abstracts: | 2018:384901 |
| OpenAlex: | W2789260384 |