Chapter 1. Dense Ceramic Membranes for Hydrogen Separation

  1. Anthony F. Sammells Chief Technology Officer and
  2. Michael V. Mundschau Principal Senior Scientist
  1. Truls Norby and
  2. Reidar Haugsrud

Published Online: 3 AUG 2006

DOI: 10.1002/3527608796.ch1

Nonporous Inorganic Membranes: for Chemical Processing

Nonporous Inorganic Membranes: for Chemical Processing

How to Cite

Norby, T. and Haugsrud, R. (2006) Dense Ceramic Membranes for Hydrogen Separation, in Nonporous Inorganic Membranes: for Chemical Processing (eds A. F. Sammells and M. V. Mundschau), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527608796.ch1

Editor Information

  1. Eltron Research Inc., 4600 Nautilus Court South, Boulder, Colorado, CO 80301-3241, USA

Author Information

  1. Department of Chemistry, University of Oslo, Centre for Materials Science and Nanotechnology, POB 1126 Blindern, NO-0318 Oslo, Norway

Publication History

  1. Published Online: 3 AUG 2006
  2. Published Print: 20 JUN 2006

ISBN Information

Print ISBN: 9783527313426

Online ISBN: 9783527608799

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Keywords:

  • nonporous inorganic membranes;
  • dense ceramic membranes;
  • hydrogen separation;
  • applications;
  • defect chemistry;
  • Wagner Transport theory;
  • surface kinetics;
  • hydrogen permeation;
  • mixed proton-electron conductors;
  • metal cation transport;
  • hydrogen-permeable membrane materials;
  • experimental techniques;
  • challenges

Summary

This chapter contains sections titled:

  • Introduction

  • Applications and Principles of Operation

    • Simple Cases

    • Examples of More Complex Applications

  • Defect Chemistry of Dense Hydrogen-permeable Ceramics

    • Materials Classes

    • Neutral and Ionized Hydrogen Species in Oxides

    • Protonic Defects and Their Transport

    • Defect Structures of Proton-conducting Oxides

    • Diffusivity, Mobility and Conductivity: The Nernst-Einstein Relation

  • Wagner Transport Theory for Dense Ceramic Hydrogen-Separation Membranes

    • General Expressions

    • From Charged to Well-Defined Species: The Electrochemical Equilibrium

    • The Voltage Over a Sample

    • Flux of a Particular Species

    • Fluxes in a Mixed Proton, Oxygen Ion, and Electron Conductor

    • Fluxes in a Mixed Proton and Electron Conductor

    • Fluxes in a Mixed Proton and Oxygen Ion Conductor

    • Fluxes in a Mixed Proton, Oxygen Ion, and Electron Conductor Revisited

    • Permeation of Neutral Hydrogen Species

    • What About Hydride Ions?

  • Surface Kinetics of Hydrogen Permeation in Mixed Proton-Electron Conductors

  • Issues Regarding Metal Cation Transport in Hydrogen-permeable Membrane Materials

  • Modeling Approaches

  • Experimental Techniques and Challenges

    • Investigation of Fundamental Materials Properties

      • Concentration

      • Diffusion

      • Conductivity

      • Transport Numbers

      • Other Properties

    • Investigation of Surface Kinetics

    • Measurements and Interpretation of Hydrogen Permeation

  • Hydrogen Permeation in Selected Systems

    • A Few Words on Flux and Permeability

    • Classes of Membranes

    • Mixed Proton-Electron Conducting Oxides

    • Cermets

    • Permeation in Other Oxide Classes and the Possibility of Neutral Hydrogen Species

    • Comparison with Metals

  • Summary