Environmental and Energy Engineering

Decomposition kinetics and recycle of binary hydrogen-tetrahydrofuran clathrate hydrate

  1. Hiroki Yoshioka1,
  2. Masaki Ota1,
  3. Yoshiyuki Sato1,
  4. Masaru Watanabe1,
  5. Hiroshi Inomata1,
  6. Richard L. Smith Jr.1,*,
  7. Cor J. Peters2,3

Article first published online: 3 MAR 2010

DOI: 10.1002/aic.12241

Issue

AIChE Journal

AIChE Journal

Volume 57, Issue 1, pages 265–272, January 2011

Additional Information

How to Cite

Yoshioka, H., Ota, M., Sato, Y., Watanabe, M., Inomata, H., Smith, R. L. and Peters, C. J. (2011), Decomposition kinetics and recycle of binary hydrogen-tetrahydrofuran clathrate hydrate. AIChE J., 57: 265–272. doi: 10.1002/aic.12241

Author Information

  1. 1

    Research Center of Supercritical Fluid Technology, Tohoku University, Aramaki Aza, Aoba-ku, Sendai 980-8579, Japan

  2. 2

    Laboratory of Process Equipment, Dept. of Process and Energy, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, 2628 CA Delft, The Netherlands

  3. 3

    Petroleum Institute, Chemical Engineering Program, Abu Dhabi, United Arab Emirates

*Research Center of Supercritical Fluid Technology, Tohoku University, Aramaki Aza, Aoba-ku, Sendai 980-8579, Japan

Publication History

  1. Issue published online: 3 MAR 2010
  2. Article first published online: 3 MAR 2010
  3. Accepted manuscript online: 3 MAR 2010 12:00AM EST
  4. Manuscript Revised: 23 FEB 2010
  5. Manuscript Received: 25 OCT 2009

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Keywords:

  • hydrogen storage;
  • clathrate hydrate;
  • formation kinetics;
  • hydrogen hydrate phase diffusion model

Abstract

Decomposition kinetics and recycle of hydrogen–tetrahydrofuran (H2–THF) clathrate hydrates were investigated with a pressure decay method at temperatures from 265.1 to 273.2 K, at initial pressures from 3.1 to 8.0 MPa, and at stoichiometric THF hydrate concentrations for particle sizes between 250 and 1000 μm. The decomposition was modeled as a two-step process consisting of H2 diffusion in the hydrate phase and desorption from the hydrate cage. The adsorption process occurred at roughly two to three times faster than the desorption process, whereas the diffusion process during formation was slightly higher (ca. 20%) than that during decomposition. Successive formation and decomposition cycles showed that occupancy seemed to decrease only slightly with cycling and that there were no large changes in hydrate structure due to cycling. Results provide evidence that the formation and decomposition of H2 clathrate hydrates occur reversibly and that H2 clathrate hydrates can be recycled with pressure. © 2010 American Institute of Chemical Engineers AIChE J, 2011

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