Redetermination of the crystal structure of. cap alpha. -Bi/sub 2/O/sub 3/. 3MoO/sub 3/ By neutron diffraction and the catalytic oxidation of propene

Journal Article · Sat Jun 01 04:00:00 EDT 1985 · Mater. Res. Bull.; (United States)

DOI:https://doi.org/10.1016/0025-5408(85)90143-6· OSTI ID:6217258

Theobald, F; Hewat, A W; Laarif, A

The powder profile obtained by neutron diffraction was analysed by the Rietveld method. The catalytic oxidation of propene over ..cap alpha..-Bi/sub 2/O/sub 3/.3MoO/sub 3/ is examined. The high activity is related to the fact that the principal cleavage plane contains together Bi and Mo ions. On the contrary ..gamma..-Bi/sub 2/O/sub 3/.MoO/sub 3/ is less active, probably because only small faces are active. The lone pairs disposition is not favorable to oxygen ionic conductivity; this rather low conductivity may favour a rather high selectivity in acrolein.

• Research Organization: Faculte des Sciences, Besancon
• OSTI ID: 6217258
• Journal Information: Mater. Res. Bull.; (United States), Journal Name: Mater. Res. Bull.; (United States) Vol. 20:6; ISSN MRBUA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ACROLEIN
ALDEHYDES
ALKENES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
COHERENT SCATTERING
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMISTRY
HYDROCARBONS
IONIC CONDUCTIVITY
METALLURGY
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NEUTRON DIFFRACTION
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWDER METALLURGY
PROPYLENE
REFRACTORY METAL COMPOUNDS
SCATTERING
TRANSITION ELEMENT COMPOUNDS