Samples of the activated microporous aluminophosphate Co-APO-5, featuring ca. 20% of Co3+ cations, when immersed in water evolve molecular oxygen at room temperature in an endothermic process, without the need for either light or a sacrificial reactant. Successive drying of the sample at temperatures around 520 K releases molecular hydrogen, with recovery of the initial conditions. Several hydration–dehydration cycles may be performed without loss of activity, i.e. water is split in a thermal cycle under relatively mild conditions.

The behaviour of an old catalyst revisited in a wet environment: Co ions in APO-5 split water under mild conditions / Bonelli, Barbara; Armandi, Marco; HERNANDEZ RIBULLEN, SIMELYS PRIS; VANKOVA KRASIMIROVA, Svetoslava; Edvige, Celasco; Maura, Tomatis; Saracco, Guido; Garrone, Edoardo. - In: PHYSICAL CHEMISTRY CHEMICAL PHYSICS. - ISSN 1463-9076. - STAMPA. - 16:(2014), pp. 7074-7082. [10.1039/c4cp00320a]

The behaviour of an old catalyst revisited in a wet environment: Co ions in APO-5 split water under mild conditions

BONELLI, Barbara;ARMANDI, MARCO;HERNANDEZ RIBULLEN, SIMELYS PRIS;VANKOVA KRASIMIROVA, SVETOSLAVA;SARACCO, GUIDO;GARRONE, EDOARDO
2014

Abstract

Samples of the activated microporous aluminophosphate Co-APO-5, featuring ca. 20% of Co3+ cations, when immersed in water evolve molecular oxygen at room temperature in an endothermic process, without the need for either light or a sacrificial reactant. Successive drying of the sample at temperatures around 520 K releases molecular hydrogen, with recovery of the initial conditions. Several hydration–dehydration cycles may be performed without loss of activity, i.e. water is split in a thermal cycle under relatively mild conditions.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2555936
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