Porous polyethersulfone-supported zeolitic imidazolate framework membranes for hydrogen separation

Ge, Lei, Zhou, Wei, Du, Aijun, & Zhu, Zhonghua (2012) Porous polyethersulfone-supported zeolitic imidazolate framework membranes for hydrogen separation. The Journal of Physical Chemistry C, 116(24), pp. 13264-13270.

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ZIF-8 thin layer has been synthesized on the asymmetric porous polyethersulfone (PES) substrate via secondary seeded growth. Continuous and dense ZIF-8 layer, containing microcavities, has good affinity with the PES support. Single gas permeance was measured for H2, N2, CH4, O2, and Ar at different pressure gradients and temperatures. Molecular sieving separation has been achieved for selectively separating hydrogen from larger gases. At 333 K, the H2 permeance can reach ∼4 × 10−7 mol m−2 s−1 Pa−1, and the ideal separation factors of H2 from Ar, O2, N2, and CH4 are 9.7, 10.8, 9.9, and 10.7, respectively. Long-term hydrogen permeance and H2/N2 separation performance show the stable permeability of the derived membranes.

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ID Code: 59767
Item Type: Journal Article
Refereed: Yes
DOI: 10.1021/jp3035105
ISSN: 1932-7447
Deposited On: 07 May 2013 22:48
Last Modified: 08 May 2013 22:10

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