Synthesis of mixed galloaluminophosphate oxynitrides: the influence of nitridation on the "AlGaPON" acido-basic properties

Delsarte, Stéphanie;Peltier, V;Laurent, Y.;Grange, Paul
(1998) 7th International Symposium on Scientific Bases for the Preparation of Heterogeneous Catalysts — Location: LOUVAIN LA NEUVE(Belgium) (1.September.1998)

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  • Delsarte, StéphanieUCLouvain
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  • Peltier, V
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  • Laurent, Y.
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  • Grange, PaulUCLouvain
    Author
Abstract
In this paper, we present the study of the synthesis parameters and characterisation of the acido-basic properties of mixed galloaluminophosphate oxynitrides, the " AlGaPON ". They were obtained by temperature programmed activation under ammonia flow of amorphous reactive phosphate precursors. Substitution of oxygen by nitrogen modifies the surface acido-basic properties of the " AlGaPON " and allows their use as basic catalysts in the Knoevenagel-type condensation. We present a systematic study of the link between the nitridation time, the bulk nitrogen content and the acido-basic properties of the " AlGaPON " evaluated by ammonia chemisorption and by IR spectroscopy of the pyridine adsorption on the " AlGaPON " surface.
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Delsarte, S., Peltier, V., Laurent, Y., & Grange, P. (1998). Synthesis of mixed galloaluminophosphate oxynitrides: the influence of nitridation on the “AlGaPON” acido-basic properties. Studies in Surface Science and Catalysis, 118, 869-878. https://hdl.handle.net/2078.5/86099 (Original work published 1998)