Cage occupancy and compressibility of deuterated N-2-clathrate hydrate by neutron diffraction
This paper reports pressure dependent high resolution neutron diffraction work on N2-clathrates, which for the first time provides numbers on the compressibility as well as the location and degree of filling of the guest molecules in the small and large cages. N2-clathrates crystallize, at least at...
| Main Authors: | , , , |
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| Format: | Journal article |
| Published: |
1997
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| _version_ | 1797084561409048576 |
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| author | Kuhs, W Chazallon, B Radaelli, P Pauer, F |
| author_facet | Kuhs, W Chazallon, B Radaelli, P Pauer, F |
| author_sort | Kuhs, W |
| collection | OXFORD |
| description | This paper reports pressure dependent high resolution neutron diffraction work on N2-clathrates, which for the first time provides numbers on the compressibility as well as the location and degree of filling of the guest molecules in the small and large cages. N2-clathrates crystallize, at least at lower pressures and temperatures near 0 °C, in the Stackelberg type II structure. However, during the diffraction experiments we have observed the transient and partial formation of the von Stackelberg type I N2-clathrate at pressures exceeding several hundred bar. The filling of the small cages in the type II clathrate roughly follows a Langmuir isotherm. In contrast to most previous assumptions there is strong evidence that the large cages are doubly occupied in both type I and type II N2-clathrates. The observed filling can be fitted reasonably well by a two-constant Langmuir model. |
| first_indexed | 2024-03-07T01:56:52Z |
| format | Journal article |
| id | oxford-uuid:9bfd5643-8e6f-49b0-bd96-bf1d091461f0 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:56:52Z |
| publishDate | 1997 |
| record_format | dspace |
| spelling | oxford-uuid:9bfd5643-8e6f-49b0-bd96-bf1d091461f02022-03-27T00:33:02ZCage occupancy and compressibility of deuterated N-2-clathrate hydrate by neutron diffractionJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9bfd5643-8e6f-49b0-bd96-bf1d091461f0Symplectic Elements at Oxford1997Kuhs, WChazallon, BRadaelli, PPauer, FThis paper reports pressure dependent high resolution neutron diffraction work on N2-clathrates, which for the first time provides numbers on the compressibility as well as the location and degree of filling of the guest molecules in the small and large cages. N2-clathrates crystallize, at least at lower pressures and temperatures near 0 °C, in the Stackelberg type II structure. However, during the diffraction experiments we have observed the transient and partial formation of the von Stackelberg type I N2-clathrate at pressures exceeding several hundred bar. The filling of the small cages in the type II clathrate roughly follows a Langmuir isotherm. In contrast to most previous assumptions there is strong evidence that the large cages are doubly occupied in both type I and type II N2-clathrates. The observed filling can be fitted reasonably well by a two-constant Langmuir model. |
| spellingShingle | Kuhs, W Chazallon, B Radaelli, P Pauer, F Cage occupancy and compressibility of deuterated N-2-clathrate hydrate by neutron diffraction |
| title | Cage occupancy and compressibility of deuterated N-2-clathrate hydrate by neutron diffraction |
| title_full | Cage occupancy and compressibility of deuterated N-2-clathrate hydrate by neutron diffraction |
| title_fullStr | Cage occupancy and compressibility of deuterated N-2-clathrate hydrate by neutron diffraction |
| title_full_unstemmed | Cage occupancy and compressibility of deuterated N-2-clathrate hydrate by neutron diffraction |
| title_short | Cage occupancy and compressibility of deuterated N-2-clathrate hydrate by neutron diffraction |
| title_sort | cage occupancy and compressibility of deuterated n 2 clathrate hydrate by neutron diffraction |
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