Acta Chimica Sinica ›› 2007, Vol. 65 ›› Issue (2): 95-99. Previous Articles     Next Articles

Original Articles

甲烷水合物膜生长动力学研究

彭宝仔, 罗虎, 孙长宇, 马庆兰, 周伟,陈光进*   

  1. (中国石油大学(北京)重质油国家重点实验室 北京 102249)
  • 收稿日期:2006-04-24 修回日期:2006-06-15 出版日期:2007-01-28 发布日期:2007-01-28
  • 通讯作者: 陈光进

Study on Growth Kinetics of Methane Hydrate Film

PENG Bao-Zi; LUO Hu; SUN Chang-Yu; MA Qing-Lan; ZHOU Wei; CHEN Guang-Jin*   

  1. (State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249)
  • Received:2006-04-24 Revised:2006-06-15 Online:2007-01-28 Published:2007-01-28
  • Contact: CHEN Guang-Jin

Film growth kinetics data of methane hydrate were measured by a suspended gas bubble in water over the temperature and pressure ranges of 273.4~279.4 K and 3.60~11.90 MPa, respectively. The dimensionless Gibbs free energy difference (-ΔGexp/RT) was used as the driving force to correlate the experimental data and a model involving parameters of physical significance for hydrate film growth kinetics was proposed. The reaction order (n=1.60), apparent activation energy (55.95 kJ•mol-1) and pre-exponential factor (1.65×1011 mm2•s-1) of methane hydrate film growth kinetics was regressed. Meanwhile the influences of temperature and pressure upon the film growth rate of methane hydrate were also discussed.

Key words: methane, hydrate, suspended bubble, kinetics, activation energy