Optimization of Metal Alloys for High Pressure Hydrogen Separation Membranes

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-04ER83935
Agency Tracking Number: 75201S04-I
Amount: $749,997.00
Phase: Phase II
Program: SBIR
Awards Year: 2005
Solitcitation Year: 2004
Solitcitation Topic Code: 44 b
Solitcitation Number: DOE/SC-0072
Small Business Information
Eltron Research, Inc.
4600 Nautilus Court South, Boulder, CO, 80301
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Xiaobing Xie
 Dr.
 (303) 530-0263
 eltron@eltronresearch.com
Business Contact
 Eileen Sammells
Title: Ms.
Phone: (303) 530-0263
Email: esammells@eltronresearch.com
Research Institution
N/A
Abstract
75201S One of the technological barriers to developing an efficient and low-cost hydrogen-separation membrane technology is hydrogen-induced embrittlement associated with the hydrogen-permeable metals at high hydrogen pressure and low temperature. This project will develop ruggedized and efficient alloy membranes that can resist fracture under a broad range of temperature and pressure conditions. New membrane materials will be developed by systematically alloying various elements in order to improve the membrane resistance to fracture. Substituents will be introduced into the membrane lattice to manipulate hydrogen solubility, scavenge interstitial impurities, and control alloy grain size. In Phase I, ten different binary and ternary Group VB-based alloys were prepared and fabricated into dense hydrogen transport membranes. The hydrogen permeation through such membranes was systematically studied at high hydrogen pressure differential (up to 12 bar) in a temperature range of 200-440¿C. Important material characteristics that affected membrane performance were identified. Phase II will focus on identifying the optimum membrane composition (which is not only highly hydrogen-permeable but also maintains high mechanical integrity under a broad range of process conditions). A cost effective protocol for fabricating large planar alloy membranes will be developed, and a scaled-up membrane unit will be designed, constructed, and tested. Commercial Applications and Other Benefits as described by the awardee: High-performance, low-cost hydrogen transport membranes should significantly contribute to the commercial implementation of IGCC and FutureGen power plants. Hydrogen separation membranes also should be key components for the low cost supply of hydrogen for Fischer-Tropsch liquid fuels synthesis, fuels hydrodesulfurization, and as a fuel feedstock for fuel cells.

* information listed above is at the time of submission.

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