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Hyperloop-like diffusion of long-chain molecules under confinement.

ABSTRACT: The ultrafast transport of adsorbates in confined spaces is a goal pursued by scientists. However, diffusion will be generally slower in nano-channels, as confined spaces inhibit motion. Here we show that the movement of long-chain molecules increase with a decrease in pore size, indicating that confined spaces promote transport. Inspired by a hyperloop running on a railway, we established a superfast pathway for molecules in zeolites with nano-channels. Rapid diffusion is achieved when the long-chain molecules keep moving linearly, as well as when they run along the center of the channel, while this phenomenon do not exist for short-chain molecules. This hyperloop-like diffusion is unique for long-chain molecules in a confined space and is further verified by diffusion experiments. These results offer special insights into molecule diffusion under confinement, providing a reference for the selection of efficient catalysts with rapid transport in the industrial field.

SUBMITTER: Yuan J

PROVIDER: S-EPMC10050162 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature

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Hyperloop-like diffusion of long-chain molecules under confinement.

Yuan Jiamin J Gao Mingbin M Liu Zhiqiang Z Tang Xiaomin X Tian Yu Y Ma Gang G Ye Mao M Zheng Anmin A

Nature communications 20230328 1

The ultrafast transport of adsorbates in confined spaces is a goal pursued by scientists. However, diffusion will be generally slower in nano-channels, as confined spaces inhibit motion. Here we show that the movement of long-chain molecules increase with a decrease in pore size, indicating that confined spaces promote transport. Inspired by a hyperloop running on a railway, we established a superfast pathway for molecules in zeolites with nano-channels. Rapid diffusion is achieved when the long ...[more]

PMID: 36977714

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