• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Crystal growth & design >Crystal Growth of Clathrate Hydrates Formed at the Interface of Liquid Water and Gaseous Methane, Ethane, or Propane: Variations in Crystal Morphology
【24h】

Crystal Growth of Clathrate Hydrates Formed at the Interface of Liquid Water and Gaseous Methane, Ethane, or Propane: Variations in Crystal Morphology

机译：在液态水和气态甲烷，乙烷或丙烷的界面处形成的笼形水合物的晶体生长：晶体形态的变化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper reports the visual observations of the formation and growth of clathrate hydrate crystals on the surface of a water droplet exposed to gaseous methane, ethane, or propane. The hydrate crystals formed and grew at the guest-water interface. The nucleation of the hydrate first Occurred at a random point on the water droplet and then grew to form a polycrystalline layer covering the Surface. We observed the individual crystals that constitute the polycrystalline hydrate layer and classified the morphology of the hydrate crystals depending on the system subcooling Delta T-sub, the difference between the system temperature and the guest-hydrate-water three-phase equilibrium temperature corresponding to the system pressure. As a general trend, at Delta T-sub >= 3.0 K, the shape of hydrate crystals is typically swordlike or triangular, and the shape changes to a polygon at Delta T-sub from 2.0 to 3.0 K, and then to larger-sized polygons with one side of the polygon typically 0.5-1.0 mm in length. It may be concluded that the crystal morphology of the hydrate crystals formed at the interface between the liquid water and methane, ethane or propane gas can be classified using Delta T-sub as the common criterion. The lateral growth rate of the hydrate crystal were also measured and presented.
机译：本文报道了在暴露于气态甲烷，乙烷或丙烷的水滴表面上笼形水合物晶体的形成和生长的肉眼观察。水合物晶体在客水界面形成并生长。水合物的成核首先发生在水滴上的任意位置，然后生长形成覆盖表面的多晶层。我们观察到构成多晶水合物层的单个晶体，并根据系统过冷Delta T-sub，系统温度与相应的客体水合物-水三相平衡温度之间的差对水合物晶体的形态进行分类。系统压力。作为一般趋势，在Delta T-sub> = 3.0 K时，水合物晶体的形状通常为剑状或三角形，并且在Delta T-sub处从2.0变为3.0 K，然后变为较大尺寸的多边形。多边形的一侧通常长度为0.5-1.0毫米。可以得出结论，在液态水与甲烷，乙烷或丙烷气体之间的界面处形成的水合物晶体的晶体形态可以使用Delta T-sub作为通用标准进行分类。还测量并给出了水合物晶体的横向生长速率。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号