Accelerated formation of THF-H2 clathrate hydrate in porous media

Dipendu Saha, Shuguang Deng

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Porous media were used to control the hydrogen clathrate particle size in order to accelerate its formation kinetics. Stoichiometric tetrahydrofuran- hydrogen binary clathrate hydrates with ∼1 wt % hydrogen loading formed in the mesopores of four porous media with median pore diameters of 49,65,100, and 226 À at 270 K and hydrogen pressure of 65 bar. The minimum formation time for the tetrahydrofuran-hydrogen binary clathrate hydrates was 27 min in a porous medium with a median pore diameter of 49 Å, which is 6-22 times faster than the tetrahydrofuran-hydrogen binary clathrate hydrates formed in the bulk ice. The clathrate formation time was found to increase with pore size of the porous media. A modified, shrinking core kinetic model was used to calculate the diffusivity of hydrogen in the tetrahydrofuranhydrogen binary clathrate hydrates. Hydrogen diffusivities in the tetrahydrofuran-hydrogen binary clathrate hydrates were found to be on the order of 1O-18-10~19 m2/s and decrease with increasing pore size or clathrate particle size.

Original languageEnglish (US)
Pages (from-to)8414-8418
Number of pages5
JournalLangmuir
Volume26
Issue number11
DOIs
StatePublished - Jun 1 2010
Externally publishedYes

Fingerprint

clathrates
Hydrates
hydrates
Porous materials
Hydrogen
hydrogen
tetrahydrofuran
porosity
Pore size
diffusivity
Particle size
Kinetics
kinetics
Ice
ice

ASJC Scopus subject areas

  • Electrochemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Science(all)
  • Spectroscopy

Cite this

Accelerated formation of THF-H2 clathrate hydrate in porous media. / Saha, Dipendu; Deng, Shuguang.

In: Langmuir, Vol. 26, No. 11, 01.06.2010, p. 8414-8418.

Research output: Contribution to journalArticle

Saha, Dipendu ; Deng, Shuguang. / Accelerated formation of THF-H2 clathrate hydrate in porous media. In: Langmuir. 2010 ; Vol. 26, No. 11. pp. 8414-8418.
@article{664dc1216a2e415299b7a5c4e3ad50a1,
title = "Accelerated formation of THF-H2 clathrate hydrate in porous media",
abstract = "Porous media were used to control the hydrogen clathrate particle size in order to accelerate its formation kinetics. Stoichiometric tetrahydrofuran- hydrogen binary clathrate hydrates with ∼1 wt {\%} hydrogen loading formed in the mesopores of four porous media with median pore diameters of 49,65,100, and 226 {\`A} at 270 K and hydrogen pressure of 65 bar. The minimum formation time for the tetrahydrofuran-hydrogen binary clathrate hydrates was 27 min in a porous medium with a median pore diameter of 49 {\AA}, which is 6-22 times faster than the tetrahydrofuran-hydrogen binary clathrate hydrates formed in the bulk ice. The clathrate formation time was found to increase with pore size of the porous media. A modified, shrinking core kinetic model was used to calculate the diffusivity of hydrogen in the tetrahydrofuranhydrogen binary clathrate hydrates. Hydrogen diffusivities in the tetrahydrofuran-hydrogen binary clathrate hydrates were found to be on the order of 1O-18-10~19 m2/s and decrease with increasing pore size or clathrate particle size.",
author = "Dipendu Saha and Shuguang Deng",
year = "2010",
month = "6",
day = "1",
doi = "10.1021/la904857e",
language = "English (US)",
volume = "26",
pages = "8414--8418",
journal = "Langmuir",
issn = "0743-7463",
publisher = "American Chemical Society",
number = "11",

}

TY - JOUR

T1 - Accelerated formation of THF-H2 clathrate hydrate in porous media

AU - Saha, Dipendu

AU - Deng, Shuguang

PY - 2010/6/1

Y1 - 2010/6/1

N2 - Porous media were used to control the hydrogen clathrate particle size in order to accelerate its formation kinetics. Stoichiometric tetrahydrofuran- hydrogen binary clathrate hydrates with ∼1 wt % hydrogen loading formed in the mesopores of four porous media with median pore diameters of 49,65,100, and 226 À at 270 K and hydrogen pressure of 65 bar. The minimum formation time for the tetrahydrofuran-hydrogen binary clathrate hydrates was 27 min in a porous medium with a median pore diameter of 49 Å, which is 6-22 times faster than the tetrahydrofuran-hydrogen binary clathrate hydrates formed in the bulk ice. The clathrate formation time was found to increase with pore size of the porous media. A modified, shrinking core kinetic model was used to calculate the diffusivity of hydrogen in the tetrahydrofuranhydrogen binary clathrate hydrates. Hydrogen diffusivities in the tetrahydrofuran-hydrogen binary clathrate hydrates were found to be on the order of 1O-18-10~19 m2/s and decrease with increasing pore size or clathrate particle size.

AB - Porous media were used to control the hydrogen clathrate particle size in order to accelerate its formation kinetics. Stoichiometric tetrahydrofuran- hydrogen binary clathrate hydrates with ∼1 wt % hydrogen loading formed in the mesopores of four porous media with median pore diameters of 49,65,100, and 226 À at 270 K and hydrogen pressure of 65 bar. The minimum formation time for the tetrahydrofuran-hydrogen binary clathrate hydrates was 27 min in a porous medium with a median pore diameter of 49 Å, which is 6-22 times faster than the tetrahydrofuran-hydrogen binary clathrate hydrates formed in the bulk ice. The clathrate formation time was found to increase with pore size of the porous media. A modified, shrinking core kinetic model was used to calculate the diffusivity of hydrogen in the tetrahydrofuranhydrogen binary clathrate hydrates. Hydrogen diffusivities in the tetrahydrofuran-hydrogen binary clathrate hydrates were found to be on the order of 1O-18-10~19 m2/s and decrease with increasing pore size or clathrate particle size.

UR - http://www.scopus.com/inward/record.url?scp=77954556681&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77954556681&partnerID=8YFLogxK

U2 - 10.1021/la904857e

DO - 10.1021/la904857e

M3 - Article

C2 - 20148547

AN - SCOPUS:77954556681

VL - 26

SP - 8414

EP - 8418

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 11

ER -