Abstract Gas hydrates hold great potential in the field of energy storage & transportation. However, the stochastic induction time and low formation rate restricted the large-scale industrialization of gas hydrate technology, which need to be improved through effective methods. Superabsorbent hydrogels (SAHs) are lightly cross-linked polymers with three-dimensional networks that can absorb and retain a large amount of water or aqueous solution. Due to the strong absorption and retention capabilities, SAHs have been added in the system to facilitate gas hydrate formation via increasing mass transfer and improving promoter recyclability. However, the interactions among gas, water and hydrogels are complicated, and the usages are diverse, and the promotion mechanisms were underexplored. This paper reviews the existing cases applying SAHs in gas hydrate formation, and analyzes the influencing mechanisms of SAHs; and meanwhile proposes a concept of SAH-based solid-state water (SSW) system, and evaluates its application potential in promoting gas hydrate formation, and further prospects its modification and integration possibilities for being a hydrate promoter.

中文翻译：

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基于聚合物超吸收水凝胶的气体水合物形成动力学促进

摘要 天然气水合物在能源储运领域具有巨大潜力。但随机诱导时间和低生成速率制约了天然气水合物技术的规模化产业化，需要通过有效的方法加以改进。超吸收水凝胶（SAHs）是具有三维网络的轻度交联聚合物，可以吸收和保留大量的水或水溶液。由于其强大的吸收和保留能力，SAHs 已被添加到系统中，通过增加传质和提高促进剂可回收性来促进天然气水合物的形成。然而，气体、水和水凝胶之间的相互作用复杂，用途多样，促进机制尚待探索。本文回顾了SAHs在天然气水合物形成中的应用案例，分析了SAHs的影响机制；同时提出了基于SAH的固态水（SSW）体系的概念，并评估了其在促进天然气水合物形成方面的应用潜力，并进一步展望了其作为水合物促进剂的改性和集成可能性。