Surface chemistry of benzoyl compounds on oxides, an FT-IR study

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · Journal of Catalysis; (United States)

DOI:https://doi.org/10.1006/jcat.1993.1300· OSTI ID:5224568

Koutstaal, C A; Angevaare, P A.J.M.; Ponec, V ^[1]

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1. Leiden Univ. (Netherlands)

Adsorption and surface reactions on various oxides have been monitored by IR spectroscopy, with benzaldehyde, benzoic acid, methylphenylketone, and 2-phenyl-2-propanol. The oxides were chosen to represent typical adsorption properties (SiO[sub 2], [gamma]-Al[sub 2]O[sub 3], and [alpha]-Mn[sub 3]O[sub 4]). Surface reactions were observed at various temperatures, starting from room temperature. The results concern three points: (i) identification of adsorbed species, arising on different oxides under increasing temperatures; (ii) the possible sequence of reaction steps in the insertion (oxidation) or removal (reduction) of oxygen, into or from the molecules studied; and (iii) the conclusion that a Cannizzaro reaction is not likely so that the insertion (and removal) is most probably by the Mars and van Krevelen mechanism. 17 refs., 10 figs., 1 tab.

• OSTI ID: 5224568
• Journal Information: Journal of Catalysis; (United States), Vol. 143:2; ISSN 0021-9517
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALCOHOLS
CHEMICAL REACTIONS
ALKYLATED AROMATICS
ALUMINIUM OXIDES
SORPTIVE PROPERTIES
BENZALDEHYDE
BENZOIC ACID
KETONES
MANGANESE OXIDES
SILICON OXIDES
ABSORPTION SPECTROSCOPY
ADSORPTION
ALDEHYDES
ALUMINIUM COMPOUNDS
AROMATICS
CARBOXYLIC ACIDS
CHALCOGENIDES
HYDROXY COMPOUNDS
MANGANESE COMPOUNDS
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
SORPTION
SPECTROSCOPY
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties