Preparation and catalytic properties of a new SiO2-attached Nb-dimer catalyst: regulation of acidity–basicity by the number of metal atoms in surface active sites
- 1 January 1991
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 2,p. 112-113
- https://doi.org/10.1039/c39910000112
Abstract
New Nb dimers on an SiO2 surface, prepared from the reaction between [Nb(η5-C5H5)H-µ-(η5, η1-C5H4)]2 and surface OH groups, are found to have an oxygen-bridged dimeric structure, as characterised by extended X-ray fine structure (EXAFS), which is active and selective for the dehydration of ethanol in contrast to the dehydrogenation ability of the Nb monomer catalyst.Keywords
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