caa a22 4500 606174303 CHVBK 20210128100737.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s11244-015-0399-4 doi (NATIONALLICENCE)springer-10.1007/s11244-015-0399-4 Bowker Michael Catalysis Hub, Research Complex at Harwell (RCaH), Rutherford Appleton Laboratory, OX11 0F, Harwell, UK aut Rules for Selective Oxidation Exemplified by Methanol Selective Oxidation on Iron Molybdate Catalysts [Elektronische Daten] [Michael Bowker] A number of simple rules are proposed which dictate for high selectivity to formaldehyde during methanol oxidation on iron molybdate catalysts. The reaction is of the Mars-van Krevelen type, that is, it is surface lattice oxygen that is the active species. However, we also show that the material is quite a flexible one, in that the bulk oxygen anions become mobile enough at moderate temperatures to exchange rapidly with the surface vacancies that are created during the reaction. Further, and essential to high selectivity, is the fact that Mo is preferentially segregated to the surface layer of the catalyst, with no Fe present there. Finally, it can also be shown that the important oxidation state for the cations at the surface is the highest one (6+ for Mo), with lower oxidation states being detrimental to selectivity. It is likely that these basic rules are also important for a range of other catalytic processes/catalysts. Springer Science+Business Media New York, 2015 Methanol oxidation nationallicence Formaldehyde synthesis nationallicence Iron molybdate nationallicence Oxidation catalysis nationallicence Topics in Catalysis Springer US; http://www.springer-ny.com 58/10-11(2015-08-01), 606-612 1022-5528 58:10-11<606 2015 58 11244 https://doi.org/10.1007/s11244-015-0399-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11244-015-0399-4 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Bowker Michael Catalysis Hub, Research Complex at Harwell (RCaH), Rutherford Appleton Laboratory, OX11 0F, Harwell, UK aut NATIONALLICENCE 773 0- Topics in Catalysis Springer US; http://www.springer-ny.com 58/10-11(2015-08-01), 606-612 1022-5528 58:10-11<606 2015 58 11244