Spectroscopy of the Formation of Microporous Transition Metal Ion Containing Aluminophosphates under Hydrothermal Conditions
Bert M. Weckhuysen Dr. ir.
Centrum voor Oppervlaktechemie en Katalyse, K.U.Leuven Kardinaal Mercierlaan 92, 3001 Heverlee-Leuven (Belgium) Fax: (+32) 16-321998
Search for more papers by this authorDavid Baetens ir.
Centrum voor Oppervlaktechemie en Katalyse, K.U.Leuven Kardinaal Mercierlaan 92, 3001 Heverlee-Leuven (Belgium) Fax: (+32) 16-321998
Search for more papers by this authorRobert A. Schoonheydt Prof. Dr. ir.
Centrum voor Oppervlaktechemie en Katalyse, K.U.Leuven Kardinaal Mercierlaan 92, 3001 Heverlee-Leuven (Belgium) Fax: (+32) 16-321998
Search for more papers by this authorBert M. Weckhuysen Dr. ir.
Centrum voor Oppervlaktechemie en Katalyse, K.U.Leuven Kardinaal Mercierlaan 92, 3001 Heverlee-Leuven (Belgium) Fax: (+32) 16-321998
Search for more papers by this authorDavid Baetens ir.
Centrum voor Oppervlaktechemie en Katalyse, K.U.Leuven Kardinaal Mercierlaan 92, 3001 Heverlee-Leuven (Belgium) Fax: (+32) 16-321998
Search for more papers by this authorRobert A. Schoonheydt Prof. Dr. ir.
Centrum voor Oppervlaktechemie en Katalyse, K.U.Leuven Kardinaal Mercierlaan 92, 3001 Heverlee-Leuven (Belgium) Fax: (+32) 16-321998
Search for more papers by this authorThis work was supported by the Fonds voor Wetenschappelijk Onderzoek-Vlaanderen (F.W.O) and the Geconcerteerde Onderzoeksactie (G.O.A.) of the Flemish Government. B.M.W. thanks the FWO for a postdoctoral fellowship at K.U.Leuven. The authors also thank Dr. F. E. Mabbs and Dr. D. Collison of the EPRSRC c.w. EPR Service Centre of the University of Manchester (UK) for using their ESR spectrometer equipped with liquid He cryostat.
Abstract
The coordination environment of transition metal ions can be monitored during the synthesis of molecular sieves at high pressures and temperatures by using the apparatus shown, which allows the measurement of diffuse reflectance and electron spin resonance spectra in situ. The spectroscopic data obtained allow a better understanding of the hydrothermal crystallization process of CoAPO-5 molecular sieves in terms of the coordination chemistry of Co2+ in the synthesis gel.
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