Characterization of natural zeolite membranes for H2/CO2 separations by single gas permeation

• Author / Creator

  Hoseinzadeh Hejazi, Sayed Alireza

• Membrane-based processes have the potential to overcome the limitations of conventional hydrogen separation techniques such as high energy consumption and environmental concerns. Natural zeolite membranes have recently been shown to demonstrate apparent molecular sieving of H2 from H2/CO2 mixtures and can be used as a model for the development of robust molecular sieve membranes with superior separation characteristics.
  The focus of this thesis is the characterization of natural clinoptilolite membranes made from dense mineral deposits by single gas H2 and CO2 permeation. Permeability values as a function of temperature and pressure were analyzed based on mass transport fundamentals of gas permeation through zeolite and non-zeolite pathways. Simple comparative parameters were introduced to characterize natural zeolite membranes. H2 and CO2 fluxes through the membranes were fitted with a model based on a combination of zeolitic, Knudsen and viscous transports so that the selective and non-selective flux fractions could be quantified.

• Subjects / Keywords

  • Characterisation
  • Membranes
  • Hydrogen
  • CO2
  • Molecular sieve
  • Modelling
  • Zeolites
  • H2

• Graduation date

  Fall 2011

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3TP53

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.