Oxidative dehydrodimerization of propylene over a Bi/sub 2/O/sub 3/-La/sub 2/O/sub 3/ oxide ion-conductive catalyst

Journal Article · Sat Nov 01 00:00:00 EST 1986 · J. Catal.; (United States)

OSTI ID:5589881

Cosimo, R D; Burrington, J D; Grasselli, R K

The oxidative dehydrodimerization of propylene to C/sub 3/-dimers (1,5-hexadiene and benzene) has been examined at 600/sup 0/C and atmospheric pressure using a (Bi/sub 2/O/sub 3/)/sub 0.85/(La/sub 2/O/sub 3/)/sub 0.15/ oxide ion-conducting catalyst in a reactor where a catalyst disk separates a feed of propylene in helium from air. The surface of the disk exposed to propylene was reoxidized not by gaseous O/sub 2/, but by the dissociative adsorption and reduction of dioxygen at the oxidant side of the disk, followed by oxide ion conduction to replace spent lattice oxygen. Selectivity to C/sub 3/-dimers when using lattice oxide migration to reoxidize the catalyst was considerably greater than when O/sub 2/ was added to the propylene feed under the same reaction conditions. This result supports the proposal that lattice oxygen is predominantly involved in the selective oxidation of propylene to C/sub 3/-dimers, and demonstrates that Bi/sub 2/O/sub 3/-based oxide ion conductors can be used as catalysts in reactions where catalyst reoxidation can occur via oxide ion conduction.

• Research Organization: Standard Oil Co., Cleveland, OH
• OSTI ID: 5589881
• Journal Information: J. Catal.; (United States), Vol. 102:1
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
BISMUTH OXIDES
CATALYTIC EFFECTS
LANTHANUM OXIDES
PROPYLENE
DEHYDROGENATION
DIMERIZATION
ADSORPTION
BENZENE
CHEMICAL REACTORS
DIENES
OXYGEN
SYNTHESIS
ALKENES
AROMATICS
BISMUTH COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
HYDROCARBONS
LANTHANUM COMPOUNDS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLYENES
POLYMERIZATION
RARE EARTH COMPOUNDS
SORPTION
020400* - Petroleum- Processing