Hydrogen clusters in clathrate hydrate

Science

Volumn 297, Issue 5590, 2002, Pages 2247-2249

  Mao, Wendy L ^a   Mao, Ho kwang ^a   Goncharov, Alexander F ^a   Struzhkin, Viktor V ^a   Guo, Quanzhong ^a   Hu, Jingzhu ^a   Hu, Jinfu ^a   Hemley, Russell J ^a   Somayazulu, Maddury ^a   Zhao, Yusheng ^a  

^a UNIVERSITY OF CHICAGO   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CONDENSATION; CRYSTALLIZATION; HYDROGEN; ICE; INFRARED RADIATION; QUENCHING; RAMAN SCATTERING; X RAY ANALYSIS;

PLANETARY NEBULAE;

HYDRATES;

HYDROGEN; WATER;

CLATHRATE; GAS HYDRATE; GEOCHEMISTRY; HIGH TEMPERATURE; HYDROGEN;

ARTICLE; CHEMICAL ANALYSIS; CHEMICAL STRUCTURE; CRYSTALLIZATION; HIGH TEMPERATURE; MOLECULAR INTERACTION; POLYMERIZATION; PRIORITY JOURNAL; RAMAN SPECTROMETRY; STRUCTURE ANALYSIS;

EID: 18544387932     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1075394     Document Type: Article

References (31)

1. I.-M. Chou, J. G. Blank, A. F. Goncharov, H.-k. Mao, R. J. Hemley, Science 281, 809 (1998).
2. S. Klotz et al., Nature 398, 681 (1999).
3. V. F. Petrenko, R. W. Whitworth, Physics of Ice (Oxford Univ. Press, Oxford, 1999).
4. H. Shimizu, T. Kumazaki, T. Kume, S. Sasaki, J. Phys. Chem. B 106 (2002).
5. _, Phys. Rev. B 65, 212102 (2002).
6. E. D. Sloan, Clathrate Hydrates of Natural Gases (Dekker, New York, ed. 2, 1997).
7. J. S. Loveday et al., Nature 410, 661 (2001).
8. I.-M. Chou et al., Proc. Nat. Acad. Sci. U.S.A. 97, 13484 (2000).
9. H. Hirai et al., J. Chem. Phys. 115, 7066 (2001).
10. W. F. Kuhs, B. Chazallon, P. Radaelli, F. Pauer, J. Kipfstuhl, in Proceedings of the 2nd International Conference on Natural Gas Hydrates (Association PROGEP, Toulouse, France, 1999), pp. 9-16.
11. Y. A. Dyadin et al., Mendeleev Commun. 9, 209 (1999).
12. Y. A. Dyadin et al., J. Struct. Chem. 40, 790 (1999).
13. H. Itoh, J. S. Tse, K. Kawamura, J. Chem. Phys. 115, 9414 (2001).
14. E. P. VanKlaveren, J. P. J. Michels, J. A. Schouten, D. D. Klug, J. S. Tse, J. Chem. Phys. 114, 5745 (2001).
15. W. L. Vos, L. W. Finger, R. J. Hemley, H. K. Mao, Phys. Rev. Lett. 71, 3150 (1993).
16. 3 sample chamber of the aluminum cell set an upper limit of R < 0.5.
17. T. C. W. Mak, R. K. McMullan, J. Chem. Phys. 42, 2732 (1965).
18. The polycrystalline x-ray and neutron diffraction data were excellent for determination of unit cell parameters but were insufficient for refinement of multiple cage occupancy and orientation ordering in the cages. Ideally, single-crystal neutron diffraction data are needed for such refinement.
19. 2 molecules but are inconsistent with the Raman observations.
20. H. L. Strauss, Z. Chen, C.-K. Loong, J. Chem. Phys. 101, 7177 (1994).
21. H. K. Mao, R. J. Hemley, Rev. Mod. Phys. 66, 671 (1994).
22. W. L. Mao, H.-k. Mao, A. F. Goncharov, V. V. Struzhkin, R. J. Hemley, in preparation.
23. S. A. Sandford, L. J. Allamandola, T. R. Geballe, Science 262, 400 (1993).
24. T. J. Lee, Nature 237, 99 (1972).
25. Y. A. Dyadin, E. Y. Aladko, K. A. Udachin, M. Tkacz, Pol. J. Chem. 68, 343 (1994).
26. D. Laufer, E. Kochavi, A. Bar-Nun, Phys. Rev. B 36, 9219 (1987).
27. D. J. Stevenson, Nature 400, 32 (1999).
28. V. Ginzburg, A. Sobyanin, JETP Lett. 15, 242 (1972).
29. T. E. Huber, C. A. Huber, Phys. Rev. Lett. 59, 1120 (1987).
30. E. L. Knuth, F. Schünemann, J. P. Toennies, J. Chem. Phys. 102, 6258 (1995).
31. We thank NSLS and LANSCE for synchrotron and neutron beam time and technical support, and S. Stishov for use of the aluminum pressure cell. Supported by the NSF Earth Science Division, the NASA Planetary Geology and Geophysics Program, the U.S. Department of Energy (Basic Energy Research), the W. M. Keck Foundation, and the Carnegie Institution of Canada.