Investigating acidity of metal fluoride surfaces by spectroscopic and chemical methods

Winfield, J. M. (2009) Investigating acidity of metal fluoride surfaces by spectroscopic and chemical methods. Journal of Fluorine Chemistry, 130(12), pp. 1069-1079. (doi: 10.1016/j.jfluchem.2009.07.012 Univ Glasgow, Dept Chem, Glasgow G12 8QQ, Lanark, Scotland.)

Abstract

Recent investigations into the surface acidity of some aluminium and magnesium fluorides and their derivatives are reviewed with emphases on relative acidities and accessibilities of surface sites. The high specific surface areas of the materials are ideal for their study, either by FTIR spectroscopy using various probe molecules that have different basicity and steric requirements or by carrying out probe reactions that are catalysed by acidic surfaces. Context for some of the recent work is provided by a summary of the commercial Catalyst, fluorinated chromia and the related, fluorinated aluminas; a particular emphasis in these sections is their catalysis of reactions that involve carbon-halogen species. For the high surface area metal fluorides and their derivatives, room temperature dehydrochlorination of tert-butyl chloride, employing chlorine-36 labelling to detect surface adsorbed species, enables comparative studies of surface acidity to be undertaken. .

• Item Type: Articles
• Keywords: ALUMINA Aluminium(III) fluoride ALUMINUM CHLOROFLUORIDE ACF BETA-ALUMINUM(III) FLUORIDE Bronsted acidity CATALYSIS CATALYTIC FLUORINATION CHLORIDE DERIVATIVES EXCHANGE-REACTIONS FLUORIDES FLUORINATED CHROMIA FTIR HYDROGEN-FLUORIDE Hydroxy fluoride ISOMERIZATION-REACTIONS Lewis acidity MAGNESIUM FLUORIDE Magnesium(II) fluoride MOLECULE MOLECULES ROOM-TEMPERATURE SOL-GEL SYNTHESIS SPECTROSCOPY STRUCTURAL FEATURES SURFACE-AREA TEMPERATURE
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Winfield, Professor John
• Authors: Winfield, J. M.
• College/School: College of Science and Engineering > School of Chemistry
• Journal Name: Journal of Fluorine Chemistry
• ISSN: 0022-1139