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Erschienen in: Journal of Materials Science 20/2017

17.07.2017 | Chemical routes to materials

Ordered mesoporous chromium–zirconium oxophosphate composites with homogeneously dispersed chromium oxide: synthesis, characterization and application in liquid phase oxidation of benzyl alcohol and ethylbenzene

verfasst von: Zhichao Miao, Jin Zhou, Zhenbin Li, Dandan Liu, Jinping Zhao, Lingjun Chou, Shuping Zhuo

Erschienen in: Journal of Materials Science | Ausgabe 20/2017

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Abstract

In this paper, a sequence of ordered mesoporous chromium–zirconium oxophosphate (M–Cr–ZrPO) composites with controllable chromium contents (0–15 mol%) were projected and successfully synthesized through a modified one-pot evaporation-induced self-assembly method. Characterized by N2 adsorption–desorption isotherms and TEM techniques, the resultant M–Cr–ZrPO composites owned ordered mesoporous structure and the textural properties [specific surface areas (160–210 m2 g−1), pore volumes (0.25–0.28 cm3 g−1) and pore sizes (5.6–6.6 nm)] of materials were improved by the introduced chromium species. In addition, the dispersion, existing states and contents of introduced chromium species in the materials were researched in detail by elemental mapping images, XRD, UV–vis, FT-IR, XPS and H2-TPR techniques. All the characterizations implied that the chromium oxides were introduced as expected and homogeneously dispersed in the skeleton of mesoporous materials. Owing to the outstanding structural properties and chromium species with homogeneous dispersion, the M–Cr–ZrPO materials exhibited superior catalytic activity for liquid phase oxidation of benzyl alcohol and ethylbenzene.

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Metadaten
Titel
Ordered mesoporous chromium–zirconium oxophosphate composites with homogeneously dispersed chromium oxide: synthesis, characterization and application in liquid phase oxidation of benzyl alcohol and ethylbenzene
verfasst von
Zhichao Miao
Jin Zhou
Zhenbin Li
Dandan Liu
Jinping Zhao
Lingjun Chou
Shuping Zhuo
Publikationsdatum
17.07.2017
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 20/2017
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-017-1387-9

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