PREPARATION OF ZEOLITE X COATINGS ON SODA-LIME TYPE GLASS PLATES

AUTOR(ES)

Tatlier, M., Atalay-Oral, Ç.

FONTE

Braz. J. Chem. Eng.

DATA DE PUBLICAÇÃO

2017-01

RESUMO

Abstract The dissolution of glass in highly alkaline reaction mixtures and the impact of this phenomenon on zeolite coating formation were investigated. Coating samples were prepared and characterized by X-ray diffraction (XRD), field emission gun scanning electron microscopy (FEGSEM) and thermogravimetry (TG). It was demonstrated that zeolite X coatings might be prepared on soda-lime glass. Glass dissolved to some degree, up to 2% of its original mass, in the reaction mixtures for the conditions investigated. This dissolution affected the zeolite synthesis taking place on the glass surface, resulting in phases different from those obtained on inert metal surfaces in some cases, especially for the use of reaction mixtures with relatively high Si/Al ratios. The percentage of dissolution of glass plates increased with their decreasing thickness, indicating a surface phenomenon for the dissolution. The stabilities of the coatings, which varied with the synthesis conditions, benefited from the addition of extra thin layers of polyacrylic acid.

Documentos Relacionados

• Soda-lime glass with gradient of refraction index (GRIN)
• Study of the Influence of Chemical Composition on the Pozzolanicity of Soda-lime Glass Microparticles
• Influencia dos metais de transição em vidros de aluminato de calcio e soda-lime
• Alternative thermal-electric polarzation process to induce and characterize second order nonlinearity in soda-lime glasses.
• Preparation of zeolite a coatings on copper plates by using the substrate heating method