TY - JOUR
T1 - Synthesis and water vapor separation properties of pure silica and aluminosilicate MCM-48 membranes
AU - Seshadri, Shriya K.
AU - Lin, Y. S.
N1 - Funding Information:
The work was supported by the Petroleum Research Fund administered by American Chemical Society and the National Science Foundation (CTBE-0403897).
PY - 2011/1/14
Y1 - 2011/1/14
N2 - This work reports on the hydrothermal synthesis and gas-vapor separation properties of ordered mesoporous MCM-48 and Al-MCM-48 membranes. Gas permeation data for these membranes is characterized by the Knudsen type permeation mechanism, with a helium permeance of 7 × 10-8 mol/m 2 Pa s and 3 × 10-8 mol/m2 Pa s, respectively, confirming the mesoporous nature of the membranes synthesized. Separation of a water vapor/oxygen mixture for these membranes was studied to explore potential use of these membranes in air dehumidification and air conditioning applications. These membranes offer high water vapor/oxygen selectivity as a result of capillary condensation of water vapor in the pores of the membranes. In the case of MCM-48, an oxygen permeance of 5 × 10 -9 mol/m2 Pa s is obtained, with a water permeance of around 1 × 10-7 mol/m2 Pa s. The water vapor/oxygen separation factors as high as 17 are achieved. Al-MCM-48 membranes are seen to provide much higher separation factors reaching as high as 142, with water vapor permeance of 6 × 10-8 mol/m2 Pa s.
AB - This work reports on the hydrothermal synthesis and gas-vapor separation properties of ordered mesoporous MCM-48 and Al-MCM-48 membranes. Gas permeation data for these membranes is characterized by the Knudsen type permeation mechanism, with a helium permeance of 7 × 10-8 mol/m 2 Pa s and 3 × 10-8 mol/m2 Pa s, respectively, confirming the mesoporous nature of the membranes synthesized. Separation of a water vapor/oxygen mixture for these membranes was studied to explore potential use of these membranes in air dehumidification and air conditioning applications. These membranes offer high water vapor/oxygen selectivity as a result of capillary condensation of water vapor in the pores of the membranes. In the case of MCM-48, an oxygen permeance of 5 × 10 -9 mol/m2 Pa s is obtained, with a water permeance of around 1 × 10-7 mol/m2 Pa s. The water vapor/oxygen separation factors as high as 17 are achieved. Al-MCM-48 membranes are seen to provide much higher separation factors reaching as high as 142, with water vapor permeance of 6 × 10-8 mol/m2 Pa s.
KW - Aluminosilicate membrane
KW - Dehumidification
KW - Gas permeation
KW - Ordered mesoporous materials
KW - Silica membranes
UR - http://www.scopus.com/inward/record.url?scp=78650520089&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78650520089&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2010.10.014
DO - 10.1016/j.seppur.2010.10.014
M3 - Article
AN - SCOPUS:78650520089
SN - 1383-5866
VL - 76
SP - 261
EP - 267
JO - Separation and Purification Technology
JF - Separation and Purification Technology
IS - 3
ER -