Performance and application of thin Pd-alloy hydrogen separation membranes in different configurations

2009 ◽  
Vol 40 (3) ◽  
pp. 253-259 ◽  
Author(s):  
A.L. Mejdell ◽  
T.A. Peters ◽  
M. Stange ◽  
H.J. Venvik ◽  
R. Bredesen
Keyword(s):  
Hydrogen Separation ◽  
Separation Membranes ◽  
Pd Alloy

scholarly journals Development of Pd Alloy Hydrogen Separation Membranes with Dense/Porous Hybrid Structure for High Hydrogen Perm-Selectivity

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Jae-Yun Han ◽  
Chang-Hyun Kim ◽  
Sang-Ho Kim ◽  
Dong-Won Kim
Keyword(s):  
Composite Membranes ◽  
Hybrid Structure ◽  
Hydrogen Separation ◽  
Membrane Thickness ◽  
High Hydrogen ◽  
Alloy Films ◽  
Separation Membranes ◽  
Metal Support ◽  
Pd Alloy ◽  
Hydrogen Selectivity

For the commercial applications of hydrogen separation membranes, both high hydrogen selectivity and permeability (i.e., perm-selectivity) are required. However, it has been difficult to fabricate thin, dense Pd alloy composite membranes on porous metal support that have a pore-free surface and an open structure at the interface between the Pd alloy films and the metal support in order to obtain the required properties simultaneously. In this study, we fabricated Pd alloy hydrogen separation membranes with dense/porous hybrid structure for high hydrogen perm-selectivity. The hydrogen selectivity of this membrane increased owing to the dense and pore-free microstructure of the membrane surface. The hydrogen permeation flux also was remarkably improved by the formation of an open microstructure with numerous open voids at the interface and by an effective reduction in the membrane thickness as a result of the porous structure formed within the Pd alloy films.

scholarly journals The Effect of Sputtering Process Variables on the Properties of Pd Alloy Hydrogen Separation Membranes

2013 ◽  
Vol 46 (6) ◽  
pp. 248-257 ◽  
Author(s):  
Jae-Yun Han ◽  
Sae-Rom Joo ◽  
Jun-Hyong Lee ◽  
Dong-Gun Park ◽  
Dong-Won Kim
Keyword(s):  
Hydrogen Separation ◽  
Process Variables ◽  
Separation Membranes ◽  
Pd Alloy

A multi-scale flow analysis in hydrogen separation membranes using a coupled DSMC-SPH method

2012 ◽  
Vol 37 (1) ◽  
pp. 894-902 ◽  
Author(s):  
Jianjun Ye ◽  
Jian Yang ◽  
Jinyang Zheng ◽  
Xianting Ding ◽  
Ieong Wong ◽  
...  
Keyword(s):  
Flow Analysis ◽  
Hydrogen Separation ◽  
Sph Method ◽  
Multi Scale ◽  
Separation Membranes

scholarly journals A radical polymer for highly efficient solar evaporation and gas separation

2021 ◽  
Author(s):  
Wei Liu ◽  
Ming Yang ◽  
Jing Liu ◽  
Meijia Yang ◽  
Jing Li ◽  
...  
Keyword(s):  
Gas Separation ◽  
Membrane Separation ◽  
Hydrogen Separation ◽  
Solar Irradiation ◽  
Separation Processes ◽  
Highly Efficient ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Transport Channels ◽  
The Impact

Abstract The unique magnetic, electronic and optical features derived from their unpaired electrons have made radical polymers an attractive material platform for various applications. Here, we report solution-processable radical polymer membranes with multi-level porosities and study the impact of free radicals on important membrane separation processes including solar vapor generation, hydrogen separation and CO2 capture. The radical polymer is a supreme light absorber over the full solar irradiation range with sufficient water transport channels, leading to a highly efficient solar evaporation membrane. In addition, the radical polymer with micropores and adjustable functional groups are broad-spectrum gas separation membranes for both hydrogen separation and CO2 capture. First principle calculations indicate that the conjugated polymeric network bearing radicals is more chemically reactive with CO2, compared with H2, N2 and CH4. This is evidenced by a high CO2 permeability in gas separation membranes made of the conjugated radical polymer.

Sign in / Sign up

Export Citation Format

Share Document