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Industrial membranes for hydrogen separation

Industrial membranes for hydrogen separation

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Production of hydrogen, as an environmentally benign alternative for fossil fuels that mainly contribute to the growing pollutant emissions, has been considered specifically in the last decades. As a result of being associated with other gases, such as CO2, CO and other impurities, the produced hydrogen must be separated and purified before being utilized by various processes. For this purpose, adsorption-based and cryogenic processes are the most conventional methods which encounter some restrictions, related to the required energy and time that make these processes not economically lucrative in some circumstances. As a result, recently, the membrane technology as well as membrane reactors has emerged to deal with these limitations. Among the common types of membranes including organic and inorganic membranes and their subgroups, which offer high selectivity and permeability to hydrogen, the stable, energy-efficient and cost-effective ceramic membranes, which are unaffected by the existing poisonous gases in the gas mixtures, are the most promising candidates for hydrogen separation in an effective manner in near future.

Chapter Contents:

  • Abstract
  • 12.1 Introduction
  • 12.2 Conventional methods for hydrogen separation
  • 12.2.1 Cryogenic process
  • 12.2.2 Pressure swing adsorption
  • 12.2.3 Vacuum swing adsorption
  • 12.2.4 Temperature swing adsorption
  • 12.2.5 Electrical swing adsorption
  • 12.3 Membrane technology: separation of hydrogen
  • 12.4 Organic membranes
  • 12.5 Inorganic membranes
  • 12.5.1 Metal and metal-alloy membranes
  • 12.5.2 Zeolite membranes
  • 12.5.3 Carbon molecular sieve membranes
  • 12.5.4 Ceramic membranes
  • 12.6 Composite (hybrid) membranes
  • 12.7 Membrane reactor for hydrogen production and separation
  • 12.8 Conclusion
  • List of abbreviations
  • References

Inspec keywords: cryogenics; separation; membranes; hydrogen production; air pollution; fossil fuels

Other keywords: cost-effective ceramic membranes; membrane technology; membrane reactors; industrial membranes; pollutant emissions; poisonous gases; hydrogen production; fossil fuels; inorganic membranes; gas mixtures; cryogenic processes; hydrogen separation; permeability; adsorption

Subjects: Mining, oil drilling and natural gas industries; Chemical industry; Environmental issues; Industrial processes; Fuel processing industry

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