Ethanol Selective Oxidation into Syngas over Pt-Promoted Fluorite-Like Oxide: SSITKA and Pulse Microcalorimetry Study - Доклады на конференциях | Sciact - CRIS-система Института катализа

Ethanol Selective Oxidation into Syngas over Pt-Promoted Fluorite-Like Oxide: SSITKA and Pulse Microcalorimetry Study Доклады на конференциях

Язык

Английский

Тип доклада

Устный

Конференция

EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources”
30 авг. - 4 сент. 2015 , Казань

Авторы

Симонов Михаил Николаевич ^1,2 , Садыков Владислав Александрович ^1,2 , Рогов Владимир Алексеевич ^1,2 , Бобин Алексей Сергеевич ^1,2 , Садовская Екатерина Михайловна ^1,2 , Мезенцева Наталья Васильевна ^1,2 , Roger Anne-Cecile ³ , van Veen Andre C. ⁴

Организации

1	Институт катализа им. Г.К. Борескова СО РАН
2	Новосибирский национальный исследовательский государственный университет
3	University of Strasbourg
4	University of Warwick

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-C bond rupture in ethanol/acetaldehyde molecules, while C-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 oxide sites to Pt provides conjugation between these steps, thus suppressing coking

Simonov M.N. , Sadykov V.A. , Rogov V.A. , Bobin A.S. , Sadovskaya E.M. , Mezentseva N.V. , Roger A. , van Veen A.C.
Ethanol Selective Oxidation into Syngas over Pt-Promoted Fluorite-Like Oxide: SSITKA and Pulse Microcalorimetry Study
EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources” 30 Aug - 4 Sep 2015