In this paper, a study on direct growth of SAPO (CHA) zeolites on aluminium foamed supports is presented. A preliminary investigation on SAPO-34 and SAPO-44 syntheses was carried out by conventional hydrothermal and microwave route to select appropriate formulations for in situ growth on aluminium foams. Adsorption capacity of coated foams were evaluated by a McBain system and compared to adsorption isobars of pure zeolites measured by a Chan microbalance. Coated samples showed the typical behaviour of the corresponding zeolite, confirming that the interaction with aluminium support was not detrimental to the zeolite adsorption performances. SAPO-34 coatings grew ten times faster by microwaves than by hydrothermal route, while for SAPO-44 the microwave deposition was not feasible for the intense corrosion of aluminium foams.
Hydrothermal and microwave synthesis of SAPO (CHA) zeolites on aluminium foams for heat pumping applications
BONACCORSI, Lucio Maria;CALABRESE, Luigi;FRENI, angelo;PROVERBIO, Edoardo
2013-01-01
Abstract
In this paper, a study on direct growth of SAPO (CHA) zeolites on aluminium foamed supports is presented. A preliminary investigation on SAPO-34 and SAPO-44 syntheses was carried out by conventional hydrothermal and microwave route to select appropriate formulations for in situ growth on aluminium foams. Adsorption capacity of coated foams were evaluated by a McBain system and compared to adsorption isobars of pure zeolites measured by a Chan microbalance. Coated samples showed the typical behaviour of the corresponding zeolite, confirming that the interaction with aluminium support was not detrimental to the zeolite adsorption performances. SAPO-34 coatings grew ten times faster by microwaves than by hydrothermal route, while for SAPO-44 the microwave deposition was not feasible for the intense corrosion of aluminium foams.Pubblicazioni consigliate
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