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Polymeric superabsorbent hydrogel-based kinetic promotion for gas hydrate formation

Journal

FUEL
Volume 288, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2020.119676

Keywords

Gas hydrate formation; Superabsorbent hydrogel; Mass transfer; Kinetic promotion; Recyclability

Funding

  1. National Natural Science Foundation of China [21978142]
  2. Youth Innovation Talent Development Project for Universities of Shandong Province
  3. Taishan Scholar Project of Shandong Province [ts20190937]

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Gas hydrates have great potential in energy storage and transportation, but the stochastic induction time and low formation rate hinder large-scale industrialization. Effective methods are needed to improve these limitations.
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.

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