Properties of CrOx(inc)/MCM-41 catalysts obtained by chromium incorporation and its catalytic activity in the reaction of propane dehydrogenation in the presence of CO2

Properties of CrOx(inc)/MCM-41 catalysts obtained by chromium incorporation and its catalytic activity in the reaction of propane dehydrogenation in the presence of CO2 Научная публикация

Журнал

Journal of Porous Materials
ISSN: 1573-4854

Вых. Данные

Год: 2025, Том: 32, Номер: 6, Страницы: 2329-2348 Страниц : 20 DOI: 10.1007/s10934-025-01850-6

Авторы

Singh Omvir ¹ , Tedeeva Marina A. ² , Igonina Maria S. ² , Pribytkov Petr V. ² , Kalmykov Konstantin B. ² , Kapustin Gennadiy I. ³ , Nissenbaum Vera D. ³ , Mishin Igor V. ³ , Dunaev Sergey F. ² , Kustov Leonid M. ^2,3 , Kustov Alexander L. ^2,3

Организации

1	Rajiv Gandhi Institute of Petroleum Technology, Jais, Amethi, 229304, Uttar Pradesh, India
2	Chemistry Department of M.V. Lomonosov, Moscow State University, 1-3, Leninskiye Gory, Moscow, 119991, Russia
3	N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47, Leninsky Prospect, Moscow, 119991, Russia

The oxidative dehydrogenation of propane (ODP) using CO2 offers a promising route to propylene production, as CO2 acts as a milder oxidant than O2. This study focuses on the synthesis and characterization of CrOx/MCM-41 catalysts prepared by co-precipitation of chromium nitrate and tetraethyl orthosilicate (TEOS) in the presence of the C16TMABr template. The resulting MCM-41-supported catalysts, along with the initial MCM-41 support, were characterized by N2 physisorption, TG-DTG-DTA, XRD, FT-IR spectroscopy, SEM-EDS, UV-Vis DRS, XPS, TPR-H2, and small-angle X-ray scattering. Analysis revealed that Cr in the 1-5Crinc/MCM-41 samples primarily exists as Cr6+, while in the 7-9Crinc/MCM-41 samples, both Cr3+ and Cr6+ are present, with Cr3+ being the dominant species. Catalytic testing conducted at an atmospheric pressure in the temperature range of 550–750 °C showed that the 5Crinc/MCM-41 and 3Crinc/MCM-41 catalysts achieved the highest propylene selectivity (68% at 575 °C with a 19% propane conversion and 69% at 600 °C with a 13% propane conversion, respectively). Notably, the incorporated Crinc/MCM-41 catalysts exhibited a 1.5–2.5 times higher productivity compared to supported Cr/MCM-41 catalysts.

Singh O. , Tedeeva M.A. , Igonina M.S. , Pribytkov P.V. , Kalmykov K.B. , Kapustin G.I. , Nissenbaum V.D. , Mishin I.V. , Dunaev S.F. , Kustov L.M. , Kustov A.L.
Properties of CrOx(inc)/MCM-41 catalysts obtained by chromium incorporation and its catalytic activity in the reaction of propane dehydrogenation in the presence of CO2
Journal of Porous Materials. 2025. V.32. N6. P.2329-2348. DOI: 10.1007/s10934-025-01850-6 WOS Scopus OpenAlex

Web of science:	WOS:001563784100001
Scopus:	2-s2.0-105015105779
OpenAlex:	W4413910227

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