Ceramic-glass composite high temperature seals for dense ionic-conducting ceramic membranes

X. Qi, F. T. Akin, Y. S. Lin

Research output: Contribution to journalArticlepeer-review

67 Scopus citations


A basic principle for selecting inorganic sealing materials for dense ionic-conducting ceramic membranes is described for high temperature permeation/reaction experiments. Based on this principle ceramic-glass composite seals consisting of the Pyrex glass and the ceramic powder of the membrane were developed and successfully used to seal a number of different dense ceramic membranes at high temperatures. The ceramic-glass composite seal is typically composed of 40-50wt.% membrane material powder, 20-50wt.% Pyrex glass and 5-20wt.% additive such as sodium aluminate and boron oxide. The properties of ceramic-glass composite seal can be tailored to obtain suitable wettability, viscosity, chemical inertness, thermal expansibility, and bonding strength for good sealing results. A success rate for sealing these ceramic membranes of nearly 100% is possible using the ceramic-glass composite recipe if the correct sealing procedure, including seal paste preparation, is carefully followed.

Original languageEnglish (US)
Pages (from-to)185-193
Number of pages9
JournalJournal of Membrane Science
Issue number2
StatePublished - Nov 15 2001
Externally publishedYes


  • Ceramic membranes
  • High temperature permeation
  • Ionic-conducting
  • Sealing

ASJC Scopus subject areas

  • Biochemistry
  • General Materials Science
  • Physical and Theoretical Chemistry
  • Filtration and Separation


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