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Catalysis Science & Technology Vol - 4 Issue - 4

Catalysis Science & Technology Vol - 4 Issue - 3

Catalysis Science & Technology Vol - 4 Issue - 2

Catalysis Science & Technology Vol -3

Catalysis Science & Technology Vol -2

Catalysis Science & Technology Vol -1

Oxidative catalytic versatility of a trivacant polyoxotungstate incorporated into MIL-101(Cr)

Content Provider	Royal Society of Chemistry (RSC)
Author	Granadeiro, Carlos M. Ribeiro, Susana Cunha-Silva, Luís Castro, Baltazar de Barbosa, André D. S. Santos, Isabel C. M. S. Balula, Salete S.
Copyright Year	2014
Abstract	The first immobilization of the trivacant Keggin-type polyoxometalate ([A-PW9O34]9−, PW9) to prepare a novel heterogeneous oxidative catalyst is here reported. PW9 was incorporated into the cavities of the chromium terephthalate metal–organic framework MIL-101(Cr). Characterization of the composite PW9@MIL-101 by powder X-ray diffraction, SEM-EDX, FT-IR, FT-Raman spectroscopy, N2 adsorption–desorption isotherms and 31P solid-state NMR confirmed that the structures of MIL-101 and the polyoxometalate anion were retained after immobilization. The composite PW9@MIL-101 revealed versatility as a heterogeneous catalyst to oxidize efficiently monoterpenes as well as to reach a complete desulfurization of a model oil containing the most refractory sulfur compounds in fuel, using in both systems acetonitrile as the solvent and H2O2 as the oxidant. Complete conversion of geraniol to 2,3-epoxygeraniol was achieved after the first 30 min at room temperature, while the total desulfurization of the model oil containing 1707 ppm of sulfur was attained after 2 h. In both systems the catalyst was recyclable for various cycles without a significant loss of activity. The stability and heterogeneity of the catalyst were confirmed by several techniques and by leaching tests.
Starting Page	1416
Ending Page	1425
Page Count	10
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	4
Issue Number	5
Journal	Catalysis Science & Technology
DOI	10.1039/c3cy00853c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Spectroscopy Hydrogen peroxide Solid-state nuclear magnetic resonance Polyoxometalate Desulfurisation Ion Fourier-transform infrared spectroscopy X-ray crystallography Heterogeneous catalysis Acetonitrile Chromium Sulfur Solvent Geraniol Keggin structure
Content Type	Text
Resource Type	Article
Subject	Catalysis

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