Home The Catalytic Evaluation of Structured Zeolite Catalysts
Article
Licensed
Unlicensed Requires Authentication

The Catalytic Evaluation of Structured Zeolite Catalysts

  • Klaus P Möller , Jonas L. L. Hedlund , Olov Öhrman and Velaphi Msimang
Published/Copyright: January 20, 2004
Become an author with De Gruyter Brill
Submit Manuscript Author Information
International Journal of Chemical Reactor Engineering
From the journal International Journal of Chemical Reactor Engineering Volume 2 Issue 1

ZSM-5 films, with thicknesses between 150 and 2300 nm, supported on 3 mm diameter alumina beads are characterised in terms of their catalytic activity and selectivity for tri-isopropylbenzene cracking and para-xylene isomerisation at 450 °C. A reaction-diffusion model adequately represents the experimental data and is used to estimate intrinsic reactivity and diffusion properties of the zeolite films. Results show that the external activity, overall activity and the diffusivity increase with increasing film thickness. The variation in reactivity and diffusivity, when compared to physio-chemical data, are a result of structural defects and non-homogeneities of the zeolite film. The measured diffusivities are within an order of magnitude of those extrapolated from literature. Thick zeolite films have the largest Thiele modulus as the increase in zeolite film thickness dominates over the structural defects. The largest selectivity improvements are observed for thick zeolite films.

Keywords: Zeolite films; xylene isomerisation; diffusion; model
Published Online: 2004-1-20

©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston

Articles in the same Issue

  1. Review
  2. Industrial Applications of Reactive Distillation: Recent Trends
  3. Phase Mixing Modeling in Multiphase Reactors Containing Gas Bubble: a Review.
  4. Article
  5. Numerical Aspects of Bubble Column Simulations
  6. Reactor Operating Strategy and Secondary Nucleation in Emulsion Polymerization
  7. Combined Mechanistic and Empirical Modelling
  8. The Catalytic Evaluation of Structured Zeolite Catalysts
  9. A Mechanistic Model for the Water Gas Shift Reaction Over Commercial Catalysts Containing CuO/ZnO
  10. Catalytic Pyrolysis of Difluorochloromethane to Produce Tetrafluoroethylene
  11. Radial Profiles of Particle Velocity in a Large Scale CFB Downer
  12. Nonlinear Dynamic Analysis of the Local Heat Transfer Rate in Three-Phase Reactors
  13. Conversion of Synthesis Gas into Light Hydrocarbons. Modelling of the Catalytic Reaction Network
  14. Influence of the Preparation Method and Metal Precursor Compound on Alumina-Supported Pd Catalysts
  15. A 3D Model of Combustion in Large-Scale Circulating Fluidized Bed Boilers
  16. Gas and Solid Mixing in High-Density CFB Risers
  17. A Local Model for Gas-Liquid Mass Transfer in a Gas-Liquid-Solid Circulating Fluidized Bed
  18. A Hybrid Methodology For On-Line Process Monitoring
  19. A Laboratory Steam-Cracking Reactor to Characterize Raw Materials
  20. Modeling, Simulation and Optimal Control of Ethylene Polymerization in Non-Isothermal, High-Pressure Tubular Reactors
  21. A Parametric Study of the Oxygen Elimination Process in a Packed Bed
  22. Flow Generated by Radial Flow Impellers: PIV Measurements and CFD Simulations
  23. Enhanced Reactor Performance with Pressure and Vacuum Swing Reaction
  24. Characterization and Selection of Materials for Air Biofiltration in Fluidized Beds
  25. Control and Optimization of a Three Phase Industrial Hydrogenation Reactor
  26. Horizontal Penetration of Gas-Liquid Spray Jets in Gas-Solid Fluidized Beds
  27. Optimization of Flow Shear Stress Through a Network of Capillary Fibers With the Use of CFD
  28. Oxygen Distribution in Packed Bed Membrane Reactors For Partial Oxidation Systems and its Effect On Product Selectivity
  29. Wastewater Minimisation Using a Heuristic Procedure
  30. Characterization of Fluidization Quality in Fluidized Beds of Wet Particles
  31. Numerical and Experimental Investigations into The Effect of Gap Between Baffle and Wall on Mixing in an Oscillatory Baffled Column
  32. Alternative Designs for Fixed Bed Catalytic Reactors
  33. Hydrodynamic and Mass Transfer Parameters in Agitated Reactors Part I: Critical Mixing Speed, Induced Gas Flow Rate, and Wavy Surface in SARs and GIRs
  34. Application of CFD Modelling Technique in Engineering Calculations of Three-Phase Flow Hydrodynamics in a Jet-Loop Reactor
  35. 3-D Modeling of Liquid Injection into Fluidized Beds
  36. Conference Presentation
  37. Granular Flows and Gas Fluidization
  38. Elastic Granular Flows
  39. Multi-fluid CFD modelling of fluidised bed reactors
  40. Chemical Reaction Engineering, the Environment, Pollution Prevention and Sustainable Development
  41. Gas-Liquid-Solid Fluidization: Perspectives
  42. Short Communication or Note
  43. Catalytic Drying of Digested Sludge
  44. Enhancement of the Distribution of a Liquid Sprayed Into a Fluidized Bed
https://doi.org/10.2202/1542-6580.1025
Keywords for this article
Zeolite films; xylene isomerisation; diffusion; model

Articles in the same Issue

  1. Review
  2. Industrial Applications of Reactive Distillation: Recent Trends
  3. Phase Mixing Modeling in Multiphase Reactors Containing Gas Bubble: a Review.
  4. Article
  5. Numerical Aspects of Bubble Column Simulations
  6. Reactor Operating Strategy and Secondary Nucleation in Emulsion Polymerization
  7. Combined Mechanistic and Empirical Modelling
  8. The Catalytic Evaluation of Structured Zeolite Catalysts
  9. A Mechanistic Model for the Water Gas Shift Reaction Over Commercial Catalysts Containing CuO/ZnO
  10. Catalytic Pyrolysis of Difluorochloromethane to Produce Tetrafluoroethylene
  11. Radial Profiles of Particle Velocity in a Large Scale CFB Downer
  12. Nonlinear Dynamic Analysis of the Local Heat Transfer Rate in Three-Phase Reactors
  13. Conversion of Synthesis Gas into Light Hydrocarbons. Modelling of the Catalytic Reaction Network
  14. Influence of the Preparation Method and Metal Precursor Compound on Alumina-Supported Pd Catalysts
  15. A 3D Model of Combustion in Large-Scale Circulating Fluidized Bed Boilers
  16. Gas and Solid Mixing in High-Density CFB Risers
  17. A Local Model for Gas-Liquid Mass Transfer in a Gas-Liquid-Solid Circulating Fluidized Bed
  18. A Hybrid Methodology For On-Line Process Monitoring
  19. A Laboratory Steam-Cracking Reactor to Characterize Raw Materials
  20. Modeling, Simulation and Optimal Control of Ethylene Polymerization in Non-Isothermal, High-Pressure Tubular Reactors
  21. A Parametric Study of the Oxygen Elimination Process in a Packed Bed
  22. Flow Generated by Radial Flow Impellers: PIV Measurements and CFD Simulations
  23. Enhanced Reactor Performance with Pressure and Vacuum Swing Reaction
  24. Characterization and Selection of Materials for Air Biofiltration in Fluidized Beds
  25. Control and Optimization of a Three Phase Industrial Hydrogenation Reactor
  26. Horizontal Penetration of Gas-Liquid Spray Jets in Gas-Solid Fluidized Beds
  27. Optimization of Flow Shear Stress Through a Network of Capillary Fibers With the Use of CFD
  28. Oxygen Distribution in Packed Bed Membrane Reactors For Partial Oxidation Systems and its Effect On Product Selectivity
  29. Wastewater Minimisation Using a Heuristic Procedure
  30. Characterization of Fluidization Quality in Fluidized Beds of Wet Particles
  31. Numerical and Experimental Investigations into The Effect of Gap Between Baffle and Wall on Mixing in an Oscillatory Baffled Column
  32. Alternative Designs for Fixed Bed Catalytic Reactors
  33. Hydrodynamic and Mass Transfer Parameters in Agitated Reactors Part I: Critical Mixing Speed, Induced Gas Flow Rate, and Wavy Surface in SARs and GIRs
  34. Application of CFD Modelling Technique in Engineering Calculations of Three-Phase Flow Hydrodynamics in a Jet-Loop Reactor
  35. 3-D Modeling of Liquid Injection into Fluidized Beds
  36. Conference Presentation
  37. Granular Flows and Gas Fluidization
  38. Elastic Granular Flows
  39. Multi-fluid CFD modelling of fluidised bed reactors
  40. Chemical Reaction Engineering, the Environment, Pollution Prevention and Sustainable Development
  41. Gas-Liquid-Solid Fluidization: Perspectives
  42. Short Communication or Note
  43. Catalytic Drying of Digested Sludge
  44. Enhancement of the Distribution of a Liquid Sprayed Into a Fluidized Bed
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2025 De Gruyter Brill
Downloaded on 29.9.2025 from https://www.degruyterbrill.com/document/doi/10.2202/1542-6580.1025/html
Scroll to top button