Effects of using substrate heating method for the preparation of zeolite coatings containing faujasite

Zülfiye Dagli, Cigdem Atalay-Oral, Melkon Tatlier*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The substrate heating method was used to crystallize coatings containing faujasite zeolite on stainless steel plates from a clear reaction mixture. Conventional synthesis was also applied under similar conditions for comparison. The coatings obtained were characterized by X-ray diffraction (XRD), field emission gun scanning electron microscopy (FEGSEM), energy dispersive X-ray spectroscopy (EDX) and thermal gravimetry (TG). In general, mixed phases containing faujasite were determined to exist in the coatings prepared. The crystallinities as well as the phases of the zeolite coatings varied with the synthesis conditions used. The Si/Al ratios of the coatings were relatively low when substrate heating was applied, indicating the presence of zeolite X type faujasite, instead of the Y type obtained from conventional synthesis. When the substrate heating method was used, the mass equivalent coating thickness increased from about 30–150 µm, under similar synthesis conditions with the conventional method. Additionally, enhancements of up to about 4% and 23% were obtained in the water capacities of the coatings at 350 °C and 100 °C, respectively.

Original languageEnglish
Pages (from-to)817-825
Number of pages9
JournalBrazilian Journal of Chemical Engineering
Volume40
Issue number3
DOIs
Publication statusPublished - Sept 2023

Bibliographical note

Publisher Copyright:
© 2022, The Author(s) under exclusive licence to Associação Brasileira de Engenharia Química.

Keywords

  • Coating
  • Faujasite
  • Substrate heating
  • Water capacity

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