An infrared spectroscopic study of acetone and mesityl oxide adsorption on acid catalyst

Journal Article · Tue Jul 07 04:00:00 EDT 1998 · Langmuir

DOI:https://doi.org/10.1021/la971359c· OSTI ID:653306

Panov, A; Fripiat, J J ^[1]

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1. Univ. of Wisconsin, Milwaukee, WI (United States)

The interactions between the acetone carbonyl and the carbonyl and double bond of mesityl oxide and the Broensted and Lewis acid sites of acid catalysts have been studied by Fourier Transform infrared (FTIR) spectroscopy. The acetone carbonyl interactions with bridging acidic OH and with bridging weakly acidic OH can be distinguished from one another semiquantitatively. This was substantiated by a quasi one-to-one relation between the number of bridging OH in a cluster Si-nAl containing only one Al and the number of strongly hydrogen-bonded acetone. The distinction between Broensted and Lewis sites is not easy with acetone, while it is with mesityl oxide. The system acetone-mesityl oxide adsorbed an acid catalysts is rather unique, since the reagent and the reaction product of the condensation reaction are qualitatively and quantitatively detectable by FTIR spectroscopy. The quantitative determination of the coverage of the acid sites by the reagent and the reaction product was a prerequisite to the study of the reaction presented elsewhere.

• Sponsoring Organization: USDOE, Washington, DC (United States)
• OSTI ID: 653306
• Journal Information: Langmuir, Journal Name: Langmuir Journal Issue: 14 Vol. 14; ISSN LANGD5; ISSN 0743-7463
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
ABSORPTION SPECTROSCOPY
ACETONE
CATALYSTS
CHEMICAL REACTION KINETICS
DEHYDROCYCLIZATION
INFRARED RADIATION
KETONES