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

Document Type

Article

Publication Date

1-1-1997

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.

Identifier

0030737098 (Scopus)

Publication Title

Journal of the Electrochemical Society

External Full Text Location

https://doi.org/10.1149/1.1837408

ISSN

00134651

First Page

349

Last Page

353

Issue

1

Volume

144

This document is currently not available here.

Share

COinS