Properties of CrOx/MCM-41 and Its Catalytic Activity in the Reaction of Propane Dehydrogenation in the Presence of CO2

Properties of CrOx/MCM-41 and Its Catalytic Activity in the Reaction of Propane Dehydrogenation in the Presence of CO2 Full article

Journal

Catalysts
ISSN: 2073-4344

Output data

Year: 2023, Volume: 13, Number: 5, Article number : 906, Pages count : DOI: 10.3390/catal13050906

Authors

Igonina Maria ¹ , Tedeeva Marina ¹ , Kalmykov Konstantin ¹ , Kapustin Gennadiy ² , Nissenbaum Vera ² , Mishin Igor ² , Pribytkov Petr ^1,2 , Dunaev Sergey ¹ , Kustov Leonid ^1,2 , Kustov Alexander ^1,2

Affiliations

1	Chemistry Department of M. V. Lomonosov, Moscow State University, 1–3 Leninskiye Gory, Moscow 119991, Russia
2	N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, Moscow 119991, Russia

Propylene is an important raw material for the production of many valuable compounds, especially polypropylene, the consumption of which continues to grow every year. The reaction of oxidative dehydrogenation of propane, where carbon dioxide is used as a mild oxidant, is a promising method for producing propylene. At the same time, the problem of utilization of greenhouse gas CO2 is partially solved. The synthesis and analysis of the physicochemical properties of mesoporous silicate MCM-41 and supported catalysts CrOx/MCM-41 prepared on its basis were carried out. These catalysts were prepared using incipient wetness impregnation. The support and catalysts were characterized by the methods of low-temperature nitrogen adsorption, TG-DTA, XRD, SEM, TPR-H2, UV/Vis diffuse reflectance spectroscopy, and small-angle X-ray scattering. It is shown that chromium is present in the samples simultaneously in the form of Cr3+ and Cr6+. The catalytic tests were performed in the range of 550–700 °C. The highest selectivity for propylene was observed for the 5%Cr/MCM-41 catalyst and was 76% at a temperature of 650 °C with a propane conversion of 20%. The deposited catalysts Cr/MCM-41 and Cr/SiO2 (Acros) were compared. The propylene selectivity for the MCM-41-supported catalyst was ~1.5 times higher than that for the SiO2-supported catalyst.

Igonina M. , Tedeeva M. , Kalmykov K. , Kapustin G. , Nissenbaum V. , Mishin I. , Pribytkov P. , Dunaev S. , Kustov L. , Kustov A.
Properties of CrOx/MCM-41 and Its Catalytic Activity in the Reaction of Propane Dehydrogenation in the Presence of CO2
Catalysts. 2023. V.13. N5. 906 . DOI: 10.3390/catal13050906 WOS Scopus OpenAlex

Web of science:	WOS:000996566900001
Scopus:	2-s2.0-85160712221
OpenAlex:	W4377090886

DB	Citing
OpenAlex	24
Scopus	23
Web of science	21