Thermodynamic stability of hydrogen+tetra-n-butyl phosphonium bromide mixed semi-clathrate hydrate
Thermodynamic stability of hydrogen+tetra-n-butyl phosphonium bromide mixed semi-clathrate hydrate
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DOI：
10.1016/j.ces.2011.09.045
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发表时间：
2012-01
影响因子：
4.7
通讯作者：
Yuuya Fujisawa;Takaaki Tsuda;S. Hashimoto;T. Sugahara;K. Ohgaki
中科院分区：
文献类型：
--
作者：
Yuuya Fujisawa;Takaaki Tsuda;S. Hashimoto;T. Sugahara;K. Ohgaki
在281.90-295.94K和170 MPa压力范围内，研究了H_2 + TBPB+水三元体系的水合物+水+流体三相平衡（压力-温度）关系。三相共存曲线的行为表明在本实验区域内没有结构转变。H2+TBPB混合半笼形水合物晶体的拉曼光谱表明，H2分子在晶体中只占据一个小笼，而TBPB分子则被一组大笼所笼住。
Three-phase equilibrium (pressure–temperature) relation of hydrate+aqueous+fluid phases for the hydrogen (H2)+tetra-n-butyl phosphonium bromide (TBPB)+water ternary system was investigated in a temperature range of 281.90–295.94K and a pressure range up to 170MPa. The behavior of the three-phase coexisting curve indicates no structural transition in the present experimental region. The Raman spectra obtained in the H2+TBPB mixed semi-clathrate hydrate crystal reveal that H2molecule occupies only small cage compartmentally and the TBPB molecule is encaged with a set of other large cages.