Phosphazene membranes for gas separations
Abstract
A polyphosphazene having a glass transition temperature ("T.sub.g") of approximately -20.degree. C. or less. The polyphosphazene has at least one pendant group attached to a backbone of the polyphosphazene, wherein the pendant group has no halogen atoms. In addition, no aromatic groups are attached to an oxygen atom that is bound to a phosphorus atom of the backbone. The polyphosphazene may have a T.sub.g ranging from approximately -100.degree. C. to approximately -20.degree. C. The polyphosphazene may be selected from the group consisting of poly[bis-3-phenyl-1-propoxy)phosphazene], poly[bis-(2-phenyl-1-ethoxy)phosphazene], poly[bis-(dodecanoxypolyethoxy)-phosphazene], and poly[bis-(2-(2-(2-.omega.-undecylenyloxyethoxy)ethoxy)ethoxy)phosphazene]- . The polyphosphazene may be used in a separation membrane to selectively separate individual gases from a gas mixture, such as to separate polar gases from nonpolar gases in the gas mixture.
- Inventors:
- Issue Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175823
- Patent Number(s):
- 7074256
- Application Number:
- 10/846,195
- Assignee:
- Battelle Energy Alliance, LLC (Idaho Falls, ID)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
- DOE Contract Number:
- AC07-05ID14517
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Stewart, Frederick F., Harrup, Mason K., Orme, Christopher J., and Luther, Thomas A. Phosphazene membranes for gas separations. United States: N. p., 2006.
Web.
Stewart, Frederick F., Harrup, Mason K., Orme, Christopher J., & Luther, Thomas A. Phosphazene membranes for gas separations. United States.
Stewart, Frederick F., Harrup, Mason K., Orme, Christopher J., and Luther, Thomas A. Tue .
"Phosphazene membranes for gas separations". United States. https://www.osti.gov/servlets/purl/1175823.
@article{osti_1175823,
title = {Phosphazene membranes for gas separations},
author = {Stewart, Frederick F. and Harrup, Mason K. and Orme, Christopher J. and Luther, Thomas A.},
abstractNote = {A polyphosphazene having a glass transition temperature ("T.sub.g") of approximately -20.degree. C. or less. The polyphosphazene has at least one pendant group attached to a backbone of the polyphosphazene, wherein the pendant group has no halogen atoms. In addition, no aromatic groups are attached to an oxygen atom that is bound to a phosphorus atom of the backbone. The polyphosphazene may have a T.sub.g ranging from approximately -100.degree. C. to approximately -20.degree. C. The polyphosphazene may be selected from the group consisting of poly[bis-3-phenyl-1-propoxy)phosphazene], poly[bis-(2-phenyl-1-ethoxy)phosphazene], poly[bis-(dodecanoxypolyethoxy)-phosphazene], and poly[bis-(2-(2-(2-.omega.-undecylenyloxyethoxy)ethoxy)ethoxy)phosphazene]- . The polyphosphazene may be used in a separation membrane to selectively separate individual gases from a gas mixture, such as to separate polar gases from nonpolar gases in the gas mixture.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {7}
}
Works referenced in this record:
Characterization of gas transport in selected rubbery amorphous polyphosphazene membranes
journal, May 2001
- Orme, Christopher J.; Harrup, Mason K.; Luther, Thomas A.
- Journal of Membrane Science, Vol. 186, Issue 2
Synthesis and characterization of polyaryloxyphosphazenes
journal, February 1974
- Singler, R. E.; Hagnauer, G. L.; Schneider, N. S.
- Journal of Polymer Science: Polymer Chemistry Edition, Vol. 12, Issue 2