Influence of Cr/Zr Ratio on Activity of Cr–Zr Oxide Catalysts in Non-Oxidative Propane Dehydrogenation

Two series of chromium–zirconium mixed oxide catalysts with different Cr/Zr molar ratio are prepared by co-precipitation method. Porous structure of the catalysts is studied by low-temperature N<sub>2</sub> adsorption–desorption. Phase composition and chromium states in the catalysts are...

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Autores principales:	Alexander Zubkov, Tatiana Bugrova, Mikhail Salaev, Grigory Mamontov
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	chromia catalysts mixed oxides zirconia dehydrogenation of propane Crystallography QD901-999
Acceso en línea:	https://doaj.org/article/2cfc074c5edc4f74aa382573d782d0a5
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spelling	oai:doaj.org-article:2cfc074c5edc4f74aa382573d782d0a52021-11-25T17:19:45ZInfluence of Cr/Zr Ratio on Activity of Cr–Zr Oxide Catalysts in Non-Oxidative Propane Dehydrogenation10.3390/cryst111114352073-4352https://doaj.org/article/2cfc074c5edc4f74aa382573d782d0a52021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1435https://doaj.org/toc/2073-4352Two series of chromium–zirconium mixed oxide catalysts with different Cr/Zr molar ratio are prepared by co-precipitation method. Porous structure of the catalysts is studied by low-temperature N<sub>2</sub> adsorption–desorption. Phase composition and chromium states in the catalysts are characterized by X-ray diffraction (XRD), UV-visible spectroscopy, and temperature-programmed reduction with hydrogen (TPR-H<sub>2</sub>). The mixed catalysts are tested in non-oxidative dehydrogenation of propane at 550 °C. The catalysts synthesized without ageing of precipitate show higher activity in propane dehydrogenation due to the higher content of reducible Cr<sup>+5</sup>/<sup>+6</sup> species due to its stabilization on the ZrO<sub>2</sub> surface.Alexander ZubkovTatiana BugrovaMikhail SalaevGrigory MamontovMDPI AGarticlechromia catalystsmixed oxideszirconiadehydrogenation of propaneCrystallographyQD901-999ENCrystals, Vol 11, Iss 1435, p 1435 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	chromia catalysts mixed oxides zirconia dehydrogenation of propane Crystallography QD901-999
spellingShingle	chromia catalysts mixed oxides zirconia dehydrogenation of propane Crystallography QD901-999 Alexander Zubkov Tatiana Bugrova Mikhail Salaev Grigory Mamontov Influence of Cr/Zr Ratio on Activity of Cr–Zr Oxide Catalysts in Non-Oxidative Propane Dehydrogenation
description	Two series of chromium–zirconium mixed oxide catalysts with different Cr/Zr molar ratio are prepared by co-precipitation method. Porous structure of the catalysts is studied by low-temperature N<sub>2</sub> adsorption–desorption. Phase composition and chromium states in the catalysts are characterized by X-ray diffraction (XRD), UV-visible spectroscopy, and temperature-programmed reduction with hydrogen (TPR-H<sub>2</sub>). The mixed catalysts are tested in non-oxidative dehydrogenation of propane at 550 °C. The catalysts synthesized without ageing of precipitate show higher activity in propane dehydrogenation due to the higher content of reducible Cr<sup>+5</sup>/<sup>+6</sup> species due to its stabilization on the ZrO<sub>2</sub> surface.
format	article
author	Alexander Zubkov Tatiana Bugrova Mikhail Salaev Grigory Mamontov
author_facet	Alexander Zubkov Tatiana Bugrova Mikhail Salaev Grigory Mamontov
author_sort	Alexander Zubkov
title	Influence of Cr/Zr Ratio on Activity of Cr–Zr Oxide Catalysts in Non-Oxidative Propane Dehydrogenation
title_short	Influence of Cr/Zr Ratio on Activity of Cr–Zr Oxide Catalysts in Non-Oxidative Propane Dehydrogenation
title_full	Influence of Cr/Zr Ratio on Activity of Cr–Zr Oxide Catalysts in Non-Oxidative Propane Dehydrogenation
title_fullStr	Influence of Cr/Zr Ratio on Activity of Cr–Zr Oxide Catalysts in Non-Oxidative Propane Dehydrogenation
title_full_unstemmed	Influence of Cr/Zr Ratio on Activity of Cr–Zr Oxide Catalysts in Non-Oxidative Propane Dehydrogenation
title_sort	influence of cr/zr ratio on activity of cr–zr oxide catalysts in non-oxidative propane dehydrogenation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2cfc074c5edc4f74aa382573d782d0a5
work_keys_str_mv	AT alexanderzubkov influenceofcrzrratioonactivityofcrzroxidecatalystsinnonoxidativepropanedehydrogenation AT tatianabugrova influenceofcrzrratioonactivityofcrzroxidecatalystsinnonoxidativepropanedehydrogenation AT mikhailsalaev influenceofcrzrratioonactivityofcrzroxidecatalystsinnonoxidativepropanedehydrogenation AT grigorymamontov influenceofcrzrratioonactivityofcrzroxidecatalystsinnonoxidativepropanedehydrogenation
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Influence of Cr/Zr Ratio on Activity of Cr–Zr Oxide Catalysts in Non-Oxidative Propane Dehydrogenation

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