Porous Vycor membranes modified by chemical vapor deposition of boron nitride for gas separation

Roland Levy, C. Ravindranath, Lev Krasnoperov, J. Opyrchal, E. S. Ramos

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8 Scopus citations

Abstract

This study focuses on the characterization of porous Vycor membranes modified by chemical vapor deposition of boron nitride (B-N-C-H) for gas separation. The B-N-C-H films were deposited on mesoporous Vycor tubes using triethylamine borane complex and ammonia as precursors. The effects of deposition temperature and reactant flow geometry on permselectivity of membranes with respect to various permeant gases were investigated. High selectivities (up to 50,000) were achieved between small molecules (He, H2) and large molecules (N2, Ar, C6H5CH3). The measured activation energies for the He and H2 permeability are 9.5 kcal/mol and 12 kcal/mol, respectively. The membranes synthesized at lower temperatures and lower ammonia flow rates showed good mechanical and chemical stability.

Original languageEnglish (US)
Pages (from-to)349-353
Number of pages5
JournalJournal of the Electrochemical Society
Volume144
Issue number1
DOIs
StatePublished - Jan 1 1997

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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