title: One-step synthesis of bismuth molybdate catalysts via flame spray pyrolysis for the selective oxidation of propylene to acrolein.
abstract: Flame spray pyrolysis (FSP) of Bi(III)- and Mo(VI)-2-ethylhexanoate dissolved in xylene resulted in various nanocrystalline bismuth molybdate phases depending on the Bi/Mo ratio. Besides α-Bi2Mo3O12 and γ-Bi2MoO6, FSP gave direct access to the metastable β-Bi2Mo2O9 phase with high surface area (19 m(2) g(-1)). This phase is normally only obtained at high calcination temperatures (>560 °C) resulting in lower surface areas. The β-phase was stable up to 400 °C and showed superior catalytic performance compared to α- and γ-phases in selective oxidation of propylene to acrolein at temperatures relevant for industrial applications (360 °C).
authors.affiliation: Karlsruhe Institute of Technology (KIT), Institute for Chemical Technology and Polymer Chemistry (ITCP), Engesserstr. 20, 76131 Karlsruhe, Germany. grunwaldt@kit.edu.
authors.forename: K
authors.initials: K
authors.lastname: Schuh
authors.forename: W
authors.initials: W
authors.lastname: Kleist
authors.forename: M
authors.initials: M
authors.lastname: Høj
authors.forename: V
authors.initials: V
authors.lastname: Trouillet
authors.forename: A D
authors.initials: AD
authors.lastname: Jensen
authors.forename: J-D
authors.initials: JD
authors.lastname: Grunwaldt
mesh_terms: D000171:Acrolein / Q000737:chemistry*; D000475:Alkenes / Q000737:chemistry*; D001729:Bismuth / Q000737:chemistry*; D002384:Catalysis; D006358:Hot Temperature; D008982:Molybdenum / Q000737:chemistry*; D010084:Oxidation-Reduction; D033362:Powder Diffraction; D013499:Surface Properties; D014961:X-Ray Diffraction
chemical_list: D000475:Alkenes; C044659:molybdate; D000171:Acrolein; D008982:Molybdenum; C013658:propylene; D001729:Bismuth