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Issue 108, 2014
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Relationship between basicity, reducibility and partial oxidation properties of chromium containing MCM-41

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Abstract

MCM-41 mesoporous solids were modified with chromium species using Cr(NO3)3 and CrO3 as precursors. The impact of metal amount and metal sources on the structural and textural parameters of the materials obtained was investigated. Their surface properties were analyzed using XRD, UV-Vis, H2-TPR (the state of Cr species) as well as test reactions (2-propanol decomposition and cyclization and dehydration of 2,5-hexsanedione). The catalytic activity of Cr/MCM-41 materials was tested in methanol partial oxidation. The relationships of reducibility, kind of chromium species, basicity of material surface and the catalysts performance in partial oxidation of methanol were examined and discussed. The impact of basicity on methanol oxidation was clearly documented. Di- and polychromate species were found to be responsible for high yields of formaldehyde.

Graphical abstract: Relationship between basicity, reducibility and partial oxidation properties of chromium containing MCM-41

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Publication details

The article was received on 12 Sep 2014, accepted on 07 Nov 2014 and first published on 14 Nov 2014


Article type: Paper
DOI: 10.1039/C4RA10336J
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RSC Adv., 2014,4, 62940-62946

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    Relationship between basicity, reducibility and partial oxidation properties of chromium containing MCM-41

    M. Trejda, M. Bryś and M. Ziolek, RSC Adv., 2014, 4, 62940
    DOI: 10.1039/C4RA10336J

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