Study of the catalytic activity of Al-Fe pillared clays in the Baeyer-Villiger oxidation

Authors: Belaroui, L.S.; Bengueddach, A.

Source: Clay Minerals, Volume 47, Number 2, June 2012 , pp. 275-284(10)

Buy & download fulltext article:

Price: $13.68 plus tax (Refund Policy)

Abstract:

Three types of AlFePILCs pillared clays have been prepared from Algerian clay precursors. They have been characterized and tested in the Baeyer-Villiger oxidation of cyclohexanone to caprolactone using benzaldehyde and oxygen as oxidant at room temperature. The structural and textural properties of the catalyst have been determined by X-ray diffraction, nitrogen adsorption-desorption isotherms and Mössbauer spectroscopy. The different activities of the clays have been related to their Fe contents and accessible surface areas. The induction period observed before the reaction started has been attributed to the dissolution of a portion of the Fe³⁺ cations, mediated by either the perbenzoic acid intermediate or the benzoic acid co-product. The reaction was indeed catalysed by a few ppm of dissolved iron cations and the catalysis of the Baeyer-Villiger oxidation reaction should mechanistically be considered as homogeneous.

Keywords: LALITHE ALGERIAN CLAY; AL-FE PILLARED CLAYS; IRON; BAEYER-VILLIGER OXIDATION; CAPROLACTONE; HOMOGENOUS CATALYSIS

Document Type: Research article

DOI: http://dx.doi.org/10.1180/claymin.2012.047.2.10

Publication date: 2012-06-01

More about this publication?