Ethanol selective oxidation into syngas over Pt-promoted fluorite-like oxide: SSITKA and pulse microcalorimetry study

M. N. Simonov; V. A. Sadykov; V. A. Rogov; A. S. Bobin; E. M. Sadovskaya; N. V. Mezentseva; A. V. Ishchenko; T. A. Krieger; A. C. Roger; A. C. van Veen

doi:10.1016/j.cattod.2016.05.005

Ethanol selective oxidation into syngas over Pt-promoted fluorite-like oxide: SSITKA and pulse microcalorimetry study

M. N. Simonov, V. A. Sadykov, V. A. Rogov, A. S. Bobin, E. M. Sadovskaya, N. V. Mezentseva, A. V. Ishchenko, T. A. Krieger, A. C. Roger, A. C. van Veen

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

5 Цитирования (Scopus)

Аннотация

Catalysts based on oxides with a high lattice oxygen mobility and reactivity are known to be able to efficiently transform ethanol into syngas by selective oxidation. Mechanism of this reaction over Pt/Pr_0.15Sm_0.15Ce_0.35Zr_0.35O₂ catalyst was studied by using SSITKA and pulse microcalorimetry. The rate–determining step is C[sbnd]C bond rupture in ethanol/acetaldehyde molecules, while C[sbnd]H bond breaking in the ethanol dehydrogenation step proceeds easily. The mechanism is described by step-wise red–ox scheme including ethanol oxidative decomposition on Pt sites with participation of bridging oxygen species (with the heat of adsorption ∼ 550 kJ/mol O₂) located at Pt-oxide interface followed by fast reoxidation of reduced support sites by O₂. Rapid oxygen migration from the oxide sites to Pt provides conjugation between these steps, thus suppressing coking.

Язык оригинала	английский
Страницы (с-по)	157-163
Число страниц	7
Журнал	Catalysis Today
Том	278
DOI	https://doi.org/10.1016/j.cattod.2016.05.005
Состояние	Опубликовано - 1 дек. 2016

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10.1016/j.cattod.2016.05.005

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@article{fa24916812894ea9a85602ad43c4347a,

title = "Ethanol selective oxidation into syngas over Pt-promoted fluorite-like oxide: SSITKA and pulse microcalorimetry study",

abstract = "Catalysts based on oxides with a high lattice oxygen mobility and reactivity are known to be able to efficiently transform ethanol into syngas by selective oxidation. Mechanism of this reaction over Pt/Pr0.15Sm0.15Ce0.35Zr0.35O2 catalyst was studied by using SSITKA and pulse microcalorimetry. The rate–determining step is C[sbnd]C bond rupture in ethanol/acetaldehyde molecules, while C[sbnd]H bond breaking in the ethanol dehydrogenation step proceeds easily. The mechanism is described by step-wise red–ox scheme including ethanol oxidative decomposition on Pt sites with participation of bridging oxygen species (with the heat of adsorption ∼ 550 kJ/mol O2) located at Pt-oxide interface followed by fast reoxidation of reduced support sites by O2. Rapid oxygen migration from the oxide sites to Pt provides conjugation between these steps, thus suppressing coking.",

keywords = "Ethanol, Mechanism, Microcalorimetry, Partial oxidation, SSITKA, Syngas",

author = "Simonov, {M. N.} and Sadykov, {V. A.} and Rogov, {V. A.} and Bobin, {A. S.} and Sadovskaya, {E. M.} and Mezentseva, {N. V.} and Ishchenko, {A. V.} and Krieger, {T. A.} and Roger, {A. C.} and {van Veen}, {A. C.}",

year = "2016",

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doi = "10.1016/j.cattod.2016.05.005",

language = "English",

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journal = "Catalysis Today",

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}

Ethanol selective oxidation into syngas over Pt-promoted fluorite-like oxide : SSITKA and pulse microcalorimetry study. / Simonov, M. N.; Sadykov, V. A.; Rogov, V. A. и др.

В: Catalysis Today, Том 278, 01.12.2016, стр. 157-163.

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

TY - JOUR

T1 - Ethanol selective oxidation into syngas over Pt-promoted fluorite-like oxide

T2 - SSITKA and pulse microcalorimetry study

AU - Simonov, M. N.

AU - Sadykov, V. A.

AU - Rogov, V. A.

AU - Bobin, A. S.

AU - Sadovskaya, E. M.

AU - Mezentseva, N. V.

AU - Ishchenko, A. V.

AU - Krieger, T. A.

AU - Roger, A. C.

AU - van Veen, A. C.

PY - 2016/12/1

Y1 - 2016/12/1

N2 - Catalysts based on oxides with a high lattice oxygen mobility and reactivity are known to be able to efficiently transform ethanol into syngas by selective oxidation. Mechanism of this reaction over Pt/Pr0.15Sm0.15Ce0.35Zr0.35O2 catalyst was studied by using SSITKA and pulse microcalorimetry. The rate–determining step is C[sbnd]C bond rupture in ethanol/acetaldehyde molecules, while C[sbnd]H bond breaking in the ethanol dehydrogenation step proceeds easily. The mechanism is described by step-wise red–ox scheme including ethanol oxidative decomposition on Pt sites with participation of bridging oxygen species (with the heat of adsorption ∼ 550 kJ/mol O2) located at Pt-oxide interface followed by fast reoxidation of reduced support sites by O2. Rapid oxygen migration from the oxide sites to Pt provides conjugation between these steps, thus suppressing coking.

AB - Catalysts based on oxides with a high lattice oxygen mobility and reactivity are known to be able to efficiently transform ethanol into syngas by selective oxidation. Mechanism of this reaction over Pt/Pr0.15Sm0.15Ce0.35Zr0.35O2 catalyst was studied by using SSITKA and pulse microcalorimetry. The rate–determining step is C[sbnd]C bond rupture in ethanol/acetaldehyde molecules, while C[sbnd]H bond breaking in the ethanol dehydrogenation step proceeds easily. The mechanism is described by step-wise red–ox scheme including ethanol oxidative decomposition on Pt sites with participation of bridging oxygen species (with the heat of adsorption ∼ 550 kJ/mol O2) located at Pt-oxide interface followed by fast reoxidation of reduced support sites by O2. Rapid oxygen migration from the oxide sites to Pt provides conjugation between these steps, thus suppressing coking.

KW - Ethanol

KW - Mechanism

KW - Microcalorimetry

KW - Partial oxidation

KW - SSITKA

KW - Syngas

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DO - 10.1016/j.cattod.2016.05.005

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EP - 163

JO - Catalysis Today

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