American Mineralogist

, volume 100 , issue 5-6 , pages 1203-1208

Insights into the structure of mixed CO₂/CH₄in gas hydrates

S. Michelle Everett ¹

Claudia J. Rawn ^{1, 2}

B. C. Chakoumakos ³

David J. Keffer ¹

Ashfia Huq ⁴

Tommy J. Phelps ⁵

Hide authors affiliations Show authors affiliations: 5 affiliations

Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996-2100, U.S.A. |

Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6064, U.S.A. |

Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6473, U.S.A. |

⁴

Chemistry and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831-6475, U.S.A. |

⁵

Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6475, U.S.A. |

Publication type: Journal Article

Publication date: 2015-05-12

Walter de Gruyter

American Mineralogist

scimago Q1

wos Q2

SJR: 0.982

CiteScore: 5.1

Impact factor: 2.3

ISSN: 0003004X, 19453027

DOI: 10.2138/am-2015-4929

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Geochemistry and Petrology

Geophysics

Abstract

The exchange of carbon dioxide for methane in natural gas hydrates is an attractive approach to harvesting CH 4 for energy production while simultaneously sequestering CO 2 . In addition to the energy and environmental implications, the solid solution of clathrate hydrate (CH 4 ) 1–x (CO 2 ) x ·5.75H 2 O provides a model system to study how the distinct bonding and shapes of CH 4 and CO 2 influence the structure and properties of the compound. High-resolution neutron diffraction was used to examine mixed CO 2 /CH 4 gas hydrates. CO 2 -rich hydrates had smaller lattice parameters, which were attributed to the higher affinity of the CO 2 molecule interacting with H 2 O molecules that form the surrounding cages, and resulted in a reduction in the unit-cell volume. Experimental nuclear scattering densities illustrate how the cage occupants and energy landscape change with composition. These results provide important insights on the impact and mechanisms for the structure of mixed CH 4 /CO 2 gas hydrate.

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GOST |

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GOST Copy

Everett S. M. et al. Insights into the structure of mixed CO2/CH4in gas hydrates // American Mineralogist. 2015. Vol. 100. No. 5-6. pp. 1203-1208.

GOST all authors (up to 50) Copy

Everett S. M., Rawn C. J., Chakoumakos B. C., Keffer D. J., Huq A., Phelps T. J. Insights into the structure of mixed CO2/CH4in gas hydrates // American Mineralogist. 2015. Vol. 100. No. 5-6. pp. 1203-1208.

RIS |

Cite this

RIS Copy

TY - JOUR

DO - 10.2138/am-2015-4929

UR - https://doi.org/10.2138/am-2015-4929

TI - Insights into the structure of mixed CO2/CH4in gas hydrates

T2 - American Mineralogist

AU - Everett, S. Michelle

AU - Rawn, Claudia J.

AU - Chakoumakos, B. C.

AU - Keffer, David J.

AU - Huq, Ashfia

AU - Phelps, Tommy J.

PY - 2015

DA - 2015/05/12

PB - Walter de Gruyter

SP - 1203-1208

IS - 5-6

VL - 100

SN - 0003-004X

SN - 1945-3027

ER -

BibTex |

Cite this

BibTex (up to 50 authors) Copy

@article{2015_Everett,

author = {S. Michelle Everett and Claudia J. Rawn and B. C. Chakoumakos and David J. Keffer and Ashfia Huq and Tommy J. Phelps},

title = {Insights into the structure of mixed CO2/CH4in gas hydrates},

journal = {American Mineralogist},

year = {2015},

volume = {100},

publisher = {Walter de Gruyter},

month = {may},

url = {https://doi.org/10.2138/am-2015-4929},

number = {5-6},

pages = {1203--1208},

doi = {10.2138/am-2015-4929}

}

MLA

Cite this

MLA Copy

Everett, S. Michelle, et al. “Insights into the structure of mixed CO2/CH4in gas hydrates.” American Mineralogist, vol. 100, no. 5-6, May. 2015, pp. 1203-1208. https://doi.org/10.2138/am-2015-4929.

Publisher

Walter de Gruyter

Journal

American Mineralogist

scimago Q1

wos Q2

SJR

0.982

CiteScore

5.1

Impact factor

2.3

ISSN

0003004X (Print)

19453027 (Electronic)