التفاصيل البيبلوغرافية
| العنوان: |
Deuterium/hydrogen permeation through different molecular sieve membranes: ZIF, LDH, zeolite. |
| المؤلفون: |
Friebe, S.1, Wang, N.1, Diestel, L.1, Liu, Y.1, Schulz, A.1, Mundstock, A.1, Caro, J.1 juergen.caro@pci.uni-hannover.de |
| المصدر: |
Microporous & Mesoporous Materials. Nov2015, Vol. 216, p127-132. 6p. |
| مصطلحات موضوعية: |
*DEUTERIUM, *HYDROGEN, *MEMBRANE permeability (Technology), *MOLECULAR sieves, *METAL-organic frameworks, *ZEOLITES |
| مستخلص: |
Different molecular sieve membranes have been evaluated in the separation of deuterium (D 2 )/hydrogen (H 2 ) mixtures. Both the single gases and the binary D 2 /H 2 mixture have been permeated at room temperature through supported Metal Organic Framework (MOF) membranes (ZIF-8 and ZIF-90) as well as through supported zeolite (SOD, LTA, FAU) and layered double hydroxide (LDH) membranes. Also the D 2 /H 2 permeation through the non-coated bare α-Al 2 O 3 supports, and pressed graphite discs has been studied. Since the molecular mass of D 2 is twice the mass of H 2 , and D 2 is slightly smaller than H 2 , D 2 should show higher single component permeability than H 2 because of its favored adsorption and diffusion compared with H 2 . For the MOF membranes (ZIF-8 and ZIF-90) as well as the LDH membrane, the single gas D 2 permeabilities are indeed by the factor of 3 larger than those of H 2 at room temperature. However, due to strong molecular interaction, no separation is found for the equimolar D 2 /H 2 mixture. For comparison, we also studied the permeation of He/D 2 . Since these mixture components are of the same molecular mass and almost the same size, no separation can be expected and no separation has been found. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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