Surface complexes of propylene and their role in catalytic oxidation

Journal Article · Fri Dec 01 04:00:00 EST 1978 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(78)90218-X· OSTI ID:6856358

Davydov, A A; Mikhaltchenko, V G; Sokolovskii, V D; Boreskov, G K

Thermodesorption and IR spectroscopy of propylene on cupric oxide, cuprous oxide, copper-magnesium mixed oxide containing 5-75Vertical Bar3< cupric oxide, gallium molybdate, chromium oxide, and alumina- and silica- supported molybdenum trioxide revealed the presence of reversibly adsorbed m-allyl and o-allyl species and/or irreversibly adsorbed m-allylic complexes, carbonate structures, two types of carboxylates, or formate, depending on the catalyst. The formation of acrolein correlated with the presence of reversibly adsorbed propylene, and the strongly adsorbed species desorbed as CO/sub 2/. The decomposition of propylene was facilitated by the presence of oxygen. Mechanisms for the surface processes on each of the metal oxide catalysts were derived and summarized in a general scheme which includes the formation of carbon dioxide and water either by a stepwise mechanism involving surface oxygens, or by a concerted mechanism with molecular oxygen.

• Research Organization: U.S.S.R. Acad. Sci., Novosibirsk
• OSTI ID: 6856358
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 55:3; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical &amp; Physicochemical Properties
400301* -- Organic Chemistry-- Chemical &amp; Physicochemical Properties-- (-1987)
ADSORPTION
ALKENES
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COPPER COMPOUNDS
COPPER OXIDES
HYDROCARBONS
INFRARED SPECTRA
KINETICS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PROPYLENE
REACTION KINETICS
SORPTION
SPECTRA
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YIELDS