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Title: Functionalized inorganic membranes for gas separation

Patent ·
OSTI ID:984482
 [1];  [2];  [3];  [4]
  1. Rexford, NY
  2. Delmar, NY
  3. Marietta, GA
  4. Niskayuna, NY
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A porous membrane for separation of carbon dioxide from a fluid stream at a temperature higher than about 200.degree. C. with selectivity higher than Knudsen diffusion selectivity. The porous membrane comprises a porous support layer comprising alumina, silica, zirconia or stabilized zirconia; a porous separation layer comprising alumina, silica, zirconia or stabilized zirconia, and a functional layer comprising a ceramic oxide contactable with the fluid stream to preferentially transport carbon dioxide. In particular, the functional layer may be MgO, CaO, SrO, BaO, La.sub.2O.sub.3, CeO.sub.2, ATiO.sub.3, AZrO.sub.3, AAl.sub.2O.sub.4, A.sup.1FeO.sub.3, A.sup.1MnO.sub.3, A.sup.1CoO.sub.3, A.sup.1NiO.sub.3, A.sup.2HfO.sub.3, A.sup.3CeO.sub.3, Li.sub.2ZrO.sub.3, Li.sub.2SiO.sub.3, Li.sub.2TiO.sub.3 or a mixture thereof; wherein A is Mg, Ca, Sr or Ba; A.sup.1 is La, Ca, Sr or Ba; A.sup.2 is Ca, Sr or Ba; and A.sup.3 is Sr or Ba.

Research Organization:
GE Global Research, Niskayuna, New York (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42451
Assignee:
General Electric Company (Niskayuna, NY)
Patent Number(s):
7,396,382
Application Number:
11/263,165
OSTI ID:
984482
Country of Publication:
United States
Language:
English

References (11)

Synthesis and characterization of MCM-41-supported Ba2SiO4 base catalyst journal May 2003
Self-assembly of a silica–surfactant nanocomposite in a porous alumina membrane journal April 2004
CO 2 Adsorption over Si-MCM-41 Materials Having Basic Sites Created by Postmodification with La 2 O 3 journal October 2004
Mesoporous Silica Composites Containing Multiple Regions with Distinct Pore Size and Complex Pore Organization journal May 2005
Separation of CO2 with BaTiO3 membrane prepared by the sol—gel method journal October 1994
Separation of CO2 by modified γ-Al2O3 membranes at high temperature journal August 1995
An Estimate of Surface Mobility of CO2on γ-Alumina and MgO-Modified γ-Alumina Above 500 K journal August 1998
Performance and pore characterization of nanoporous carbon membranes for gas separation journal February 1996
Separation characteristics of tetrapropylammoniumbromide templating silica/alumina composite membrane in CO2/N2, CO2/H2 and CH4/H2 systems journal March 2004
Generalized syntheses of large-pore mesoporous metal oxides with semicrystalline frameworks journal November 1998
Block Copolymer Templating Syntheses of Mesoporous Metal Oxides with Large Ordering Lengths and Semicrystalline Framework journal October 1999

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY