Currently, gas hydrates are considered to be a potential resource of natural gas in the future. Vast quantities of gas hydrates deposits are located in the deep sea or in the permafrost zone. Among the other potential methods for extracting natural gas from these deposits is the injection of CO2 into a hydrate-bearing reservoir. This method assumes that carbon dioxide will replace methane molecules in the clathrate framework, so this method may be able to provide long-term burial for greenhouse gas CO2 along with the getting of burning gas. Understanding the kinetics of this process might be crucial for assessing the feasibility of implementation of this technology, but there is currently no clear understanding about the applicability of standard equations for heterogeneous reactions to describe the kinetics of this process. In this paper, we present some recent kinetic data on CH4/CO2 exchange at temperature below the ice melting point, focusing on the composition of hydrates. We also propose theoretical explanations for the obtained data.

中文翻译：

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研究冰熔点以下天然气水合物中甲烷-二氧化碳交换的动力学。实验数据和计算模型


目前，天然气水合物被认为是未来天然气的潜在资源。大量的天然气水合物沉积物位于深海或永久冻土带中。从这些矿藏中提取天然气的其他潜在方法是将二氧化碳注入含有水合物的储层中。该方法假设二氧化碳将取代笼形框架中的甲烷分子，因此该方法可能能够随着燃烧气体的获取而对温室气体CO2提供长期埋藏。了解该过程的动力学对于评估该技术实施的可行性可能至关重要，但目前对于描述该过程动力学的多相反应标准方程的适用性还没有明确的认识。在本文中，我们介绍了冰熔点以下温度下 CH4/CO2 交换的一些最新动力学数据，重点关注水合物的组成。我们还对所获得的数据提出了理论解释。