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Novel Approaches to Carbon Management Separation, Capture, Sequestration, and Conversion to Useful Products: Workshop Report (2003) / Chapter Skim
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2 Advanced Separations Techniques
Pages 3-8

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From page 3...
... 7. CO2 sorbents; Nanoscale materials as separation agents; High-temperature membranes; Electrochemical approaches for gas separations; Small-scale wi(lely distributecl CO2 recovery processes; Carbon management through carbon monoxide; and Novel hydrogen storage concepts.
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From page 4...
... to the following: molten metal oxides, mectium-temperature eutectics, ionic liquids, biphasic materials, and CO2 transfer agents that reversibly form compounds with CO2 (e.g., alkyl carbonate)
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From page 5...
... Nanoscale porous structures in which molecular exclusion is the basis for many concepts in membrane separations offer the potential for greater selectivity. Nanoscale porous structures with minimum irregularities in the molecular path may significantly increase the molecular flux through the pores.
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From page 6...
... ELECTROCHEMICAL APPROACHES FOR GAS SEPARATIONS Most state-of-the-art gas separation technologies require significant expenditures of energy. For example, adsorption and clesorption processes require energy to regenerate the separation agent.
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From page 7...
... Simple energy and material balances can help identify attractive options that can guide the selection of novel materials and process chemistry concepts. These schemes should include process concepts in which heat and/or electric power is generated while the carbon monoxide is converted to an easily "sequestrable" state.
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From page 8...
... , which is costly not only for the storage canisters onboard vehicles but also for the compressors and electricity required for compression at refueling stations. Refueling time and safe hydrogen storage and handling facilities at retail stations are also factors that have a negative impact on the development of a hydrogen economy for transportation.
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Key Terms

  • hydrogen storage
  • energy consumption
  • fossil fuels
  • molten salts
  • carbon management

  • separations agent
  • fossil fuel
  • process concepts
  • porous structures
  • chemical interactions

  • separation agents
  • flue gas
  • electrochemical approaches
  • combustion process
  • novel hydrogen

  • gas stream
  • separation agent
  • separations techniques
  • pore size
  • workshop sessions

  • novel materials
  • schemes require
  • nanoscale porous
  • useful products
  • nanoscale materials

  • storage concepts
  • hydrogen economy
  • refueling stations
  • fossil energy
  • key features


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