Zeolite coating on foamed stainless steel by in-situ crystallization method

H. Asakura, C. D. Madhusoodana, Yoshikazu Kameshima, A. Nakajima, K. Okada

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Faujasite-type zeolite films were prepared on foamed stainless steel by the in-situ crystallization method. Precursor solutions were prepared by dissolving water glass and NaAlO2in a NaOH solution and aged at room temperature for two days. The concentrations of the starting materials were varied from 0.29 to 2.3 M (in SiO2concentration) keeping the molar ratios of Na2O:SiO2:Al2O3fixed at 3.6:3.0:1.0. The foamed stainless steel substrate had about 90% of porosity and an average pore size of 600 μ m. It was dip-coated in the precursor solution four times, then hydrothermally treated at 80°, 110° and 150°C for 6-48 h. The XRD patterns and SEM photographs revealed that faujasite-type zeolite was formed predominantly at a SiO2concentration of 1.1 M, temperature of 110°C and duration of 24 h, with a product particle size of 2-5 μ m. At higher concentrations of the precursor solution, hydroxylsodalite becomes the major product rather than faujasite-type zeolite. The adherence strength of the zeolite grains deposited on the foamed stainless steel is higher in the in-situ crystallization method than when a conventional solution method is used. Thus, the in-situ crystallization method is concluded to be effective for preparing zeolite films even on metal substrates.

Original languageEnglish
Pages (from-to)31-36
Number of pages6
JournalJournal of Electroceramics
Volume17
Issue number1
DOIs
Publication statusPublished - Sep 2006
Externally publishedYes

Fingerprint

Zeolites
Stainless Steel
Crystallization
stainless steels
Stainless steel
crystallization
coatings
Coatings
porosity
Substrates
products
photographs
Pore size
dissolving
Porosity
Particle size
Glass
Temperature
Scanning electron microscopy
scanning electron microscopy

Keywords

  • Faujasite-type zeolite
  • Foamed stainless steel
  • Hydrothermal treatment
  • In situ crystallization
  • Zeolite coating

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Zeolite coating on foamed stainless steel by in-situ crystallization method. / Asakura, H.; Madhusoodana, C. D.; Kameshima, Yoshikazu; Nakajima, A.; Okada, K.

In: Journal of Electroceramics, Vol. 17, No. 1, 09.2006, p. 31-36.

Research output: Contribution to journalArticle

Asakura, H. ; Madhusoodana, C. D. ; Kameshima, Yoshikazu ; Nakajima, A. ; Okada, K. / Zeolite coating on foamed stainless steel by in-situ crystallization method. In: Journal of Electroceramics. 2006 ; Vol. 17, No. 1. pp. 31-36.
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