MCF Material as an Attractive Support for Vanadium Oxide Applied as a Catalyst for Propene Epoxidation with N2O

Autor:	Jolanta Kowalska-Kuś, Kinga Góra-Marek, A. Held, K. Nowińska
Rok vydání:	2018
Předmět:	Vanadium chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis Vanadium oxide 0104 chemical sciences Propene oxide Propene chemistry.chemical_compound symbols.namesake chemistry Chemical engineering symbols 0210 nano-technology Raman spectroscopy Mesoporous material Organometallic chemistry
Zdroj:	Catalysis Letters. 148:2058-2068
ISSN:	1572-879X 1011-372X
DOI:	10.1007/s10562-018-2420-6
Popis:	Vanadium modified mesocellular silica foams (MCF) materials (V content ca. 3 and 5 wt%) prepared by the impregnation method show mainly isolated or low-polymeric VOx species, which was confirmed by means of Raman spectroscopy and DR UV–Vis. Textural measurements, and also XRD and TEM results indicate that the characteristic mesocellular structural features of MCFs are preserved after vanadium incorporation. The MCF-supported vanadia catalysts exhibit much higher propene conversion and propene oxide productivity when compared to vanadium modified mesoporous silicas of 2D structure, demonstrating that apart from the presence of highly dispersed isolated vanadium species, internal molecular transport within three-dimensional ultra large pores of MCF materials also plays an important role in gas-phase propene epoxidation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad74e3c893da96054630c2c308ee19e7 https://doi.org/10.1007/s10562-018-2420-6 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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