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1. (WO2018085500) HYDROGEN SEPARATION MEMBRANE

Pub. No.:    WO/2018/085500    International Application No.:    PCT/US2017/059664
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Fri Nov 03 00:59:59 CET 2017
IPC: B01D 69/10
B01D 69/12
B01D 53/22
B01D 71/02
C01B 3/50
Applicants: WORCESTER POLYTECHNIC INSTITUTE
Inventors: DATTA, Ravindra
YEN, Pei-Shan
DEVEAU, Nicholas D.
Title: HYDROGEN SEPARATION MEMBRANE
Abstract:
A hydrogen separation membrane employs dense liquid metal separator deposited on a support structure for providing a membrane film allowing passage of hydrogen to be used in industrial processes and consumer applications benefiting from pure hydrogen. A support structure such as silicon carbide is non-reactive with the molten metal, thus withstanding the high temperatures associated with hydrogen producing processes. The liquid metal "wets", or adheres/covers the support structure to form continuous membrane for passing only hydrogen and resisting breakdown leading to discontinuity in the membrane surface. The molten (liquid) metal membrane is "sandwiched" between porous and inert ceramic supports to form a continuous thin film. Molecular hydrogen dissociates on the liquid metal membrane surface when exposed to a hydrogen gas mixture. The resulting hydrogen atoms dissolve into and diffuse across liquid metal film to arrive at the opposite surface, where they reassociate and desorb as pure hydrogen gas.