One-step formation of hydrogen clusters in clathrate hydrates stabilized via natural gas blending
- Authors
- Ahn, Yun-Ho; Moon, Seokyoon; Koh, Dong-Yeun; Hong, Sujin; Lee, Huen; Lee, Jae W.; Park, Youngjune
- Issue Date
- Jan-2020
- Publisher
- ELSEVIER
- Keywords
- Clathrate hydrates; Inclusion compounds; Gas storage; Gas-phase promoter; Hydrogen-natural gas blends
- Citation
- ENERGY STORAGE MATERIALS, v.24, pp.655 - 661
- Journal Title
- ENERGY STORAGE MATERIALS
- Volume
- 24
- Start Page
- 655
- End Page
- 661
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/38808
- DOI
- 10.1016/j.ensm.2019.06.007
- ISSN
- 2405-8297
- Abstract
- Harvesting energy gases in the nanoporous water-frameworks of clathrate hydrate enables the widespread of hydrogen-based fuels converted from excess solar or wind energy sources (i.e., Power-to-Gas). However, there has always been a critical trade-off between mild formation condition and maximum working capacity. Here we demonstrate the 'natural gas modulator' based synthesis that leads to significantly reduced synthesis pressure (P-H2 approximate to 3 MPa) simultaneously with the formation of hydrogen clusters (up to 3 molecules) in the confined nanoporous cages of clathrate hydrates. Instead of employing hazardous liquid chemicals, clean energy gas of natural gas is used for the first time to multiply load H-2 in all cages (5(12), 5(12)6(2), and 5(12)6(4) cages) of hydrogen-natural gas hydrates without any postsynthetic modification (e.g., guest-exchange reaction). This approach minimizes the environmental impact and reduces operation cost since clathrate hydrates do not generate any chemical waste in both synthesis and decomposition process, and hydrogen-natural gas mixture can be also utilized as an energy resource as itself.
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Collections - College of Engineering > Department of Chemical Engineering > 1. Journal Articles
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