skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Membranes for H2 generation from nuclear powered thermochemical cycles.

Abstract

In an effort to produce hydrogen without the unwanted greenhouse gas byproducts, high-temperature thermochemical cycles driven by heat from solar energy or next-generation nuclear power plants are being explored. The process being developed is the thermochemical production of Hydrogen. The Sulfur-Iodide (SI) cycle was deemed to be one of the most promising cycles to explore. The first step of the SI cycle involves the decomposition of H{sub 2}SO{sub 4} into O{sub 2}, SO{sub 2}, and H{sub 2}O at temperatures around 850 C. In-situ removal of O{sub 2} from this reaction pushes the equilibrium towards dissociation, thus increasing the overall efficiency of the decomposition reaction. A membrane is required for this oxygen separation step that is capable of withstanding the high temperatures and corrosive conditions inherent in this process. Mixed ionic-electronic perovskites and perovskite-related structures are potential materials for oxygen separation membranes owing to their robustness, ability to form dense ceramics, capacity to stabilize oxygen nonstoichiometry, and mixed ionic/electronic conductivity. Two oxide families with promising results were studied: the double-substituted perovskite A{sub x}Sr{sub 1-x}Co{sub 1-y}B{sub y}O{sub 3-{delta}} (A=La, Y; B=Cr-Ni), in particular the family La{sub x}Sr{sub 1-x}Co{sub 1-y}Mn{sub y}O{sub 3-{delta}} (LSCM), and doped La{sub 2}Ni{sub 1-x}M{sub x}O{sub 4} (M = Cu,more » Zn). Materials and membranes were synthesized by solid state methods and characterized by X-ray and neutron diffraction, SEM, thermal analyses, calorimetry and conductivity. Furthermore, we were able to leverage our program with a DOE/NE sponsored H{sub 2}SO{sub 4} decomposition reactor study (at Sandia), in which our membranes were tested in the actual H{sub 2}SO{sub 4} decomposition step.« less

Authors:
; ; ; ; ;  [1];  [1];
  1. (University of California, Davis, CA)
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
USDOE
OSTI Identifier:
899362
Report Number(s):
SAND2006-7081
TRN: US0702004
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; 14 SOLAR ENERGY; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; CALORIMETRY; CAPACITY; CERAMICS; DISSOCIATION; EFFICIENCY; GREENHOUSE GASES; HYDROGEN; MEMBRANES; NEUTRON DIFFRACTION; NUCLEAR POWER PLANTS; OXIDES; OXYGEN; PEROVSKITE; PEROVSKITES; REMOVAL; SOLAR ENERGY; Nuclear reactors-Materials-Thermochemical properties.; Hydrogen-Research.; Thermochemical properties.; Hydrogen-Thermal properties.

Citation Formats

Nenoff, Tina Maria, Ambrosini, Andrea, Garino, Terry J., Gelbard, Fred, Leung, Kevin, Navrotsky, Alexandra, Iyer, Ratnasabapathy G., and Axness, Marlene. Membranes for H2 generation from nuclear powered thermochemical cycles.. United States: N. p., 2006. Web. doi:10.2172/899362.
Nenoff, Tina Maria, Ambrosini, Andrea, Garino, Terry J., Gelbard, Fred, Leung, Kevin, Navrotsky, Alexandra, Iyer, Ratnasabapathy G., & Axness, Marlene. Membranes for H2 generation from nuclear powered thermochemical cycles.. United States. doi:10.2172/899362.
Nenoff, Tina Maria, Ambrosini, Andrea, Garino, Terry J., Gelbard, Fred, Leung, Kevin, Navrotsky, Alexandra, Iyer, Ratnasabapathy G., and Axness, Marlene. Wed . "Membranes for H2 generation from nuclear powered thermochemical cycles.". United States. doi:10.2172/899362. https://www.osti.gov/servlets/purl/899362.
@article{osti_899362,
title = {Membranes for H2 generation from nuclear powered thermochemical cycles.},
author = {Nenoff, Tina Maria and Ambrosini, Andrea and Garino, Terry J. and Gelbard, Fred and Leung, Kevin and Navrotsky, Alexandra and Iyer, Ratnasabapathy G. and Axness, Marlene},
abstractNote = {In an effort to produce hydrogen without the unwanted greenhouse gas byproducts, high-temperature thermochemical cycles driven by heat from solar energy or next-generation nuclear power plants are being explored. The process being developed is the thermochemical production of Hydrogen. The Sulfur-Iodide (SI) cycle was deemed to be one of the most promising cycles to explore. The first step of the SI cycle involves the decomposition of H{sub 2}SO{sub 4} into O{sub 2}, SO{sub 2}, and H{sub 2}O at temperatures around 850 C. In-situ removal of O{sub 2} from this reaction pushes the equilibrium towards dissociation, thus increasing the overall efficiency of the decomposition reaction. A membrane is required for this oxygen separation step that is capable of withstanding the high temperatures and corrosive conditions inherent in this process. Mixed ionic-electronic perovskites and perovskite-related structures are potential materials for oxygen separation membranes owing to their robustness, ability to form dense ceramics, capacity to stabilize oxygen nonstoichiometry, and mixed ionic/electronic conductivity. Two oxide families with promising results were studied: the double-substituted perovskite A{sub x}Sr{sub 1-x}Co{sub 1-y}B{sub y}O{sub 3-{delta}} (A=La, Y; B=Cr-Ni), in particular the family La{sub x}Sr{sub 1-x}Co{sub 1-y}Mn{sub y}O{sub 3-{delta}} (LSCM), and doped La{sub 2}Ni{sub 1-x}M{sub x}O{sub 4} (M = Cu, Zn). Materials and membranes were synthesized by solid state methods and characterized by X-ray and neutron diffraction, SEM, thermal analyses, calorimetry and conductivity. Furthermore, we were able to leverage our program with a DOE/NE sponsored H{sub 2}SO{sub 4} decomposition reactor study (at Sandia), in which our membranes were tested in the actual H{sub 2}SO{sub 4} decomposition step.},
doi = {10.2172/899362},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Nov 01 00:00:00 EST 2006},
month = {Wed Nov 01 00:00:00 EST 2006}
}

Technical Report:

Save / Share: