Vapor-liquid phase behavior of the iodine-sulfur water-splitting process : LDRD final report for FY03.

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This report summarizes the results of a one-year LDRD project that was undertaken to better understand the equilibrium behavior of the iodine-water-hydriodic acid system at elevated temperature and pressure. We attempted to extend the phase equilibrium database for this system in order to facilitate development of the iodine-sulfur water-splitting process to produce hydrogen to a commercial scale. The iodine-sulfur cycle for thermochemical splitting of water is recognized as the most efficient such process and is particularly well suited to coupling to a high-temperature source of process heat. This study intended to combine experimental measurements of vapor-liquid-liquid equilibrium and equation-of-state modeling ... continued below

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32 p.

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Bradshaw, Robert W.; Larson, Richard S. & Lutz, Andrew E. January 1, 2004.

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Description

This report summarizes the results of a one-year LDRD project that was undertaken to better understand the equilibrium behavior of the iodine-water-hydriodic acid system at elevated temperature and pressure. We attempted to extend the phase equilibrium database for this system in order to facilitate development of the iodine-sulfur water-splitting process to produce hydrogen to a commercial scale. The iodine-sulfur cycle for thermochemical splitting of water is recognized as the most efficient such process and is particularly well suited to coupling to a high-temperature source of process heat. This study intended to combine experimental measurements of vapor-liquid-liquid equilibrium and equation-of-state modeling of equilibrium solutions using Sandia's Chernkin software. Vapor-liquid equilibrium experiments were conducted to a limited extent. The Liquid Chernkin software that was developed as part of an earlier LDRD project was enhanced and applied to model the non-ideal behavior of the liquid phases.

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32 p.

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  • Report No.: SAND2004-8014
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/919168 | External Link
  • Office of Scientific & Technical Information Report Number: 919168
  • Archival Resource Key: ark:/67531/metadc891121

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  • January 1, 2004

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 2, 2016, 6:08 p.m.

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Bradshaw, Robert W.; Larson, Richard S. & Lutz, Andrew E. Vapor-liquid phase behavior of the iodine-sulfur water-splitting process : LDRD final report for FY03., report, January 1, 2004; United States. (digital.library.unt.edu/ark:/67531/metadc891121/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.