Global warming is one of the most pressing environmental concerns which correlates strongly with anthropogenic CO₂ emissions so that the CO₂ decreasing strategies have been meaningful worldwide attention. As an option, natural gas hydrate reservoirs have steadily emerged as a potent source of energy which would simultaneously be the proper places for CO₂ sequestration if the method of CO₂/CH₄ replacement could be developed. On the flip side, CO₂ hydrates as safe and non-flammable solid compounds without an irreversible chemical reaction would contribute to different industrial processes if their approaches could be improved. Toward developing substantial applications of CO₂ hydrates, laboratory experiments, process modelling, and molecular dynamics (MD) simulations can aid to understand their characteristics and mechanisms involved. Therefore, the current review has been organized in form of four distinct sections. The first part reviews the studies on sequestering CO₂ into the natural gas hydrate reservoirs. The next section gives an overview of process flow diagrams of CO₂ hydrate-based techniques in favour of CO₂ Capture and Sequestration & Utilization (CCS&U). The third section summarizes the merits, flaws, and different effects of hydrate promoters as well as porous media on CO₂ hydrate systems at macroscopic and mesoscopic levels, and also how these components can improve CO₂ hydrate properties, progressing toward the more feasibility of CO₂ hydrate industrial applications. The final sector recapitulates the MD frameworks of CO₂ clathrate and semiclathrate hydrates in terms of new insights and research findings to elucidate the fundamental properties of CO₂ hydrates at the molecular level.

全球变暖是最紧迫的环境问题之一，与人为CO ₂排放密切相关，因此减少CO ₂的策略已引起全世界的关注。作为一种选择，天然气水合物储层已逐渐成为一种有效的能源来源，如果能够开发出CO ₂ /CH _{4置换方法，这将同时成为 CO 2}封存的合适场所。另一方面，CO ₂水合物作为安全且不易燃的固体化合物，没有不可逆的化学反应，如果它们的方法可以改进，它们将有助于不同的工业过程。朝着开发二氧化碳的实质性应用₂水合物、实验室实验、过程建模和分子动力学 (MD) 模拟有助于了解它们的特征和所涉及的机制。因此，本次审查以四个不同部分的形式进行组织。第一部分回顾了将CO ₂封存到天然气水合物储层中的研究。下一节概述了基于 CO ₂水合物的技术的工艺流程图，这些技术有利于 CO ₂捕获和封存与利用 (CCS&U)。_{第三部分从宏观和中观层面总结了水合物促进剂和多孔介质对CO 2}水合物系统的优缺点和不同影响，以及这些组分如何改善CO₂水合物性质，朝着更可行的 CO ₂水合物工业应用方向发展。最后一部分根据新的见解和研究结果概括了 CO ₂笼形和半笼形水合物的 MD 框架，以在分子水平上阐明 CO _{2水合物的基本性质。}