| 甲烷水合物膜生长动力学研究 |
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| 引用本文： | 彭宝仔,罗虎,孙长宇,马庆兰,周伟,陈光进.甲烷水合物膜生长动力学研究[J].化学学报,2007,65(2):95-99. |
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| 作者姓名： | 彭宝仔 罗虎 孙长宇 马庆兰 周伟 陈光进 |
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| 作者单位： | (中国石油大学(北京)重质油国家重点实验室 北京 102249) |
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| 基金项目： | 国家自然科学基金
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全国高等学校优秀博士学位论文作者专项基金 |
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| 摘 要： | 采用水中悬浮气泡法测定了温度为273.4～279.4 K、压力为3.60～11.90 MPa范围内甲烷微小气泡表面水合物膜生长动力学数据. 应用无因次Gibbs自由能差(－ΔGexp/RT)作为推动力, 提出了具物理意义的水合物膜生长动力学模型, 并回归得到甲烷水合物膜生长动力学反应级数为1.60, 表观活化能为55.95 kJ?mol－1, 指前因子为1.65×1011 mm2?s－1. 同时考察了温度和压力对甲烷水合物膜生长速率的影响.
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| 关 键 词： | 甲烷 水合物 悬浮气泡 动力学 活化能 |
| 收稿时间： | 2006-4-24 |
| 修稿时间： | 2006-04-242006-09-14 |
Study on Growth Kinetics of Methane Hydrate Film |
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| PENG Bao-Zi,LUO Hu,SUN Chang-Yu,MA Qing-Lan,ZHOU Wei,CHEN Guang-Jin.Study on Growth Kinetics of Methane Hydrate Film[J].Acta Chimica Sinica,2007,65(2):95-99. |
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| Authors: | PENG Bao-Zi LUO Hu SUN Chang-Yu MA Qing-Lan ZHOU Wei CHEN Guang-Jin |
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| Institution: | (State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249) |
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| Abstract: | 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. |
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| Keywords: | methane hydrate suspended bubble kinetics activation energy |
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