Zeolite coatings prepared by in situ synthesis have been recently proposed as protective treatments for metal surfaces because of their non-toxicity, the high thermal stability and the ability to host useful extra-ions in their framework. In this study, zeolite Y coatings have been grown by direct synthesis on aluminium and stainless steel surfaces. We developed a new method for depositing zeolite Y on aluminium substrates by a single-step synthesis in presence of TEA (triethanolamine). The zeolite coatings have been evaluated by electrochemical tests in neutral (NaCl) and alkaline (Ca(OH)2) solutions demonstrating a good protective action, especially for aluminium. Although the direct involvement of zeolite coatings in the electrochemical processes was evident, the specific reactions that occur at the zeolite-electrolyte interface have yet to be investigated.

Low temperature single-step synthesis of zeolite Y coatings on aluminium substrates

Bonaccorsi L.
;
2011

Abstract

Zeolite coatings prepared by in situ synthesis have been recently proposed as protective treatments for metal surfaces because of their non-toxicity, the high thermal stability and the ability to host useful extra-ions in their framework. In this study, zeolite Y coatings have been grown by direct synthesis on aluminium and stainless steel surfaces. We developed a new method for depositing zeolite Y on aluminium substrates by a single-step synthesis in presence of TEA (triethanolamine). The zeolite coatings have been evaluated by electrochemical tests in neutral (NaCl) and alkaline (Ca(OH)2) solutions demonstrating a good protective action, especially for aluminium. Although the direct involvement of zeolite coatings in the electrochemical processes was evident, the specific reactions that occur at the zeolite-electrolyte interface have yet to be investigated.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12318/2437
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