Calorimetric determinations of the compositions, enthalpies of dissociation, and heat capacities in the range 85 to 270 K for clathrate hydrates of xenon and krypton
作者:Y.P. Handa
DOI:10.1016/0021-9614(86)90124-2
日期:1986.9
composition, enthalpy of dissociation, and heat capacities of gas hydrates. Heat capacities in the range 85 to 270 K and enthalpies of dissociation were obtained for structure I: Xe · 5.90H2O, and structure II: Kr · 6.10H2O, clathrate hydrates. Molar heat-capacity contributions from xenon and krypton to their hydrates are less than 3R each. The standard enthalpy of dissociation for the process (hydrate
描述了一种量热技术,它为单个样品加载气体水合物的组成、解离焓和热容量。对于结构 I:Xe·5.90H2O 和结构 II:Kr·6.10H2O,笼形水合物,获得了 85 至 270 K 范围内的热容和解离焓。氙和氪对其水合物的摩尔热容贡献均小于 3R。在 273.15 K 和 101.325 kPa 条件下,该过程(水合物 = 冰 + 气体)的标准离解焓为 (26.50 ± 0.17) kJ · mol−1(对于 Xe · 5.90H2O)和 (19.54 ± 0.24) kJ · mol−1 对于 K · 6.10H2O。