najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2025-16-4-491-497najo-1449Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХPt/CeO2–ZrO2 catalyst for dimethyl ether and dimethoxymethane partial oxidation to syngas: in-situ Raman spectroscopy structural studiesКатализатор Pt/CeO2–ZrO2 для парциального окисления диметилового эфира и диметоксиметана в синтез-газ: структурные исследования с помощью in situ спектроскопии комбинационного рассеяния светаhttps://orcid.org/0000-0002-6353-5753КораблеваГ. М.KorablevaG. M.

Galina M. Korableva

Acad. Osipyana, 2, Chernogolovka, Moscow District, 142432, Russia

eliseevagm@issp.ac.ruhttps://orcid.org/0000-0001-9650-6951АгарковД. А.AgarkovD. A.

Dmitrii A. Agarkov

Acad. Osipyana, 2, Chernogolovka, Moscow District, 142432, Russia 

Institutskiy per., 9, Dolgoprudny, Moscow District, 141701, Russia

agarkov@issp.ac.ruhttps://orcid.org/0000-0001-6351-8219БадмаевС. Д.BadmaevS. D.

Sukhe D. Badmaev

Lavrentiev Ave., 5, Novosibirsk, 630090, Russia

sukhe@catalysis.ruhttps://orcid.org/0009-0002-9316-8488КатричД. С.KatrichD. S.

Denis S. Katrich

Acad. Osipyana, 2, Chernogolovka, Moscow District,142432, Russia

katrich.ds@phystech.eduhttps://orcid.org/0000-0001-8579-6340СамойловА. В.SamoilovA. V.

Alexandr V. Samoilov

Acad. Osipyana, 2, Chernogolovka, Moscow District, 142432, Russia

samoilov@issp.ac.ruhttps://orcid.org/0000-0002-5057-3187СнытниковП. В.SnytnikovP. V.

Pavel V. Snytnikov

Lavrentiev Ave., 5, Novosibirsk, 630090, Russia

pvsnyt@catalysis.ruТартаковскийИ. И.TartakovskiiI. I.

Ilya I. Tartakovskii

Acad. Osipyana, 2, Chernogolovka, Moscow District,142432, Russia 

tartakov@issp.ac.ruhttps://orcid.org/0000-0002-8616-2531БредихинС. И.BredikhinS. I.

Sergey I. Bredikhin

Acad. Osipyana, 2, Chernogolovka, Moscow District,142432, Russia 

bredikh@issp.ac.ruOsipyan Institute of Solid State Physics RASRussian FederationOsipyan Institute of Solid State Physics RAS; Moscow Institute of Physics and TechnologyRussian FederationBoreskov Institute of Catalysis SB RASRussian Federation202503092025164491497Copyright © Korableva G.M., Agarkov D.A., Badmaev S.D., Katrich D.S., Samoilov A.V., Snytnikov P.V., Tartakovskii I.I., Bredikhin S.I., 20252025Кораблева Г.М., Агарков Д.А., Бадмаев С.Д., Катрич Д.С., Самойлов А.В., Снытников П.В., Тартаковский И.И., Бредихин С.И.Korableva G.M., Agarkov D.A., Badmaev S.D., Katrich D.S., Samoilov A.V., Snytnikov P.V., Tartakovskii I.I., Bredikhin S.I.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1449

This paper is devoted to studies of the conversion mechanism of carbon-containing fuels on multicomponent catalyst with the composition of 1.9 wt. % Pt–Ce0.75Zr0.25O2 (Pt/CZ) using in-situ Raman spectroscopy (RS) and catalytic activity measurements. It was found that during heating and transition from inert atmosphere to reducing conditions, oxygen escapes from the crystal lattice of the samples. This leads to formation of oxygen vacancies in the near-surface layer of the catalyst and increasing Ce3+ concentration by more than 20 % already at a temperature of 400◦C. Meanwhile, when returning to the initial external conditions (temperature, gas mixture), a reversible process occurs. The use of Pt/CZ catalysts allows to obtain up to 35 vol % H2 and about 25 vol % CO in syngas during dimethyl ether and dimethoxymethane partial oxidation. Thus, Pt/CZ catalysts are of particular interest as efficient catalysts for the conversion of hydrocarbons to synthesis gas, suitable for feeding SOFC stacks.

Настоящая работа посвящена исследованию механизма конверсииуглеродсодержащих топлив на многокомпонентном катализаторе состава 1,9 мас.% Pt-Ce0,75Zr0,25O2 (Pt/CZ) с использованием in-situ спектроскопии комбинационного рассеяния света (КРС) и измерений каталитической активности. Установлено, что при нагревании и переходе из инертной атмосферы в восстановительные условия происходит выход кислорода из кристаллической решетки образцов. Это приводит к образованию кислородных вакансий в приповерхностном слое катализатора и увеличению концентрации Ce3+ более чем на 20% уже при температуре 400℃. Между тем, при возврате к исходным внешним условиям (температура, газовая смесь) происходит обратимый процесс. Использование катализаторов Pt/CZ позволяет получать до 35 об.% H2 и около 25 об.% CO в синтез-газе при парциальном окислении диметилового эфира и диметоксиметана. Таким образом, катализаторы Pt/CZ представляют большой интерес как эффективные катализаторы для конверсии углеводородов в синтез-газ, пригодный для питания батарей ТОТЭ.

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The authors declare that there are no conflicts of interest present.