Preparation of Zeolite X Coatings on Soda-Lime Type Glass Plates

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.

Antireflection Enhancement by Composite Nanoporous Zeolite 3A–Carbon Thin Film

“…Previous investigations of beta polymorph A and mordenite-framework-inverted zeolite have shown a reduction in reflected light to less than 1% in the visible spectral range [6]. Outstanding AR characteristics were obtained by properly fabricating zeolite thin film for optical lens and glass replacing the existing analogs [7,8,9].…”