Synthesis and properties of A-type zeolite membranes by secondary growth method with vacuum seeding

Aisheng Huang, Y. S. Lin, Weishen Yang

Research output: Contribution to journalArticle

140 Citations (Scopus)

Abstract

A-type zeolite membranes were successfully synthesized on tubular α-Al 2O 3 supports by secondary growth method with vacuum seeding. In the seeding process, a thin, uniform and continuous seeding layer was closely attached to the support surface by the pressure difference between the two sides of the support wall. The effects of seed particle size, suspension concentration, coating pressure difference and coating time on the membrane and its pervaporation properties were investigated. The as-synthesized membranes were characterized by XRD and SEM. The quality of the membranes was evaluated by the pervaporation dehydration of 95 wt.% isopropanol/water mixture at 343 K. High quality A-type zeolite membranes can be reproducibly prepared by the secondary growth method with vacuum seeding under the conditions: seed particle size of 500-1200 nm, suspension concentration of 4-8 g/l, coating pressure difference of 0.0100-0.0250 MPa and coating time of 45-180 s.

Original languageEnglish (US)
Pages (from-to)41-51
Number of pages11
JournalJournal of Membrane Science
Volume245
Issue number1-2
DOIs
StatePublished - Dec 1 2004
Externally publishedYes

Fingerprint

Zeolites
inoculation
Vacuum
membranes
Membranes
vacuum
synthesis
coatings
Growth
Coatings
Pervaporation
Particle Size
Pressure
Seed
seeds
Seeds
Suspensions
Particle size
2-Propanol
Dehydration

Keywords

  • A-type zeolite membrane
  • Coating
  • Hydrothermal synthesis
  • Pervaporation
  • Vacuum seeding

ASJC Scopus subject areas

  • Filtration and Separation
  • Polymers and Plastics

Cite this

Synthesis and properties of A-type zeolite membranes by secondary growth method with vacuum seeding. / Huang, Aisheng; Lin, Y. S.; Yang, Weishen.

In: Journal of Membrane Science, Vol. 245, No. 1-2, 01.12.2004, p. 41-51.

Research output: Contribution to journalArticle

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