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Sodalites as ultramicroporous frameworks for hydrogen separation at elevated temperatures: thermal stability, template removal, and hydrogen accessibility

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Abstract

Sodalite (SOD) is a highly promising porous structure for hydrogen separation from larger gas molecules due to the presence of small (∼2.8 Å) six-membered ring openings of the sodalite cages. Thermal stability, template removal, and the release of encapsulated hydrogen were studied for low-silica (Si/Al = 1), high-silica (Si/Al = 5) and pure-silica (Si/Al = ∞) sodalites. The release of encapsulated hydrogen from sodalite cages was observed at 380, 550, and 480 °C for low-silica, high-silica and pure-silica sodalites, respectively, suggesting the operating temperatures for hydrogen separation employing these sodalite structures.

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Authors and Affiliations

  1. Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, OH, 45221-0012, USA

    Zhenkun Zheng & Vadim V. Guliants

  2. New York State College of Ceramics at Alfred University, 2 Pine St., Alfred, NY, 14802, USA

    Scott Misture

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  1. Zhenkun Zheng
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  2. Vadim V. Guliants
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  3. Scott Misture
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Correspondence to Vadim V. Guliants.

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Zheng, Z., Guliants, V.V. & Misture, S. Sodalites as ultramicroporous frameworks for hydrogen separation at elevated temperatures: thermal stability, template removal, and hydrogen accessibility. J Porous Mater 16, 343–347 (2009). https://doi.org/10.1007/s10934-008-9206-y

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  • DOI: https://doi.org/10.1007/s10934-008-9206-y

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