A supported Zeolitic Imidazolate Framework (ZIF) membrane of unprecedented hydrothermal stability is obtained and applied in a membrane reactor for hydrogen production with significant enhancements in the yield and selectivity. It is found that the membrane/support interface acidity has paramount inducing effects on the thermochemical stability of ZIF membranes, resulting in the catastrophic acid-catalyzed decomposition of the ZIF frameworks. The interface modulated ZIF-7/MgO-Al2O3 membrane of marked thermochemical stability has permitted the first significant application of MOF membranes for catalytic membrane reactor in severe and practical process conditions, performing water-gas shift reaction (CO + H2O ↔ CO2 + H2) at considerably high temperatures (473–673 K) and steam concentrations (20–40%).

Enhanced hydrogen production using a zeolitic imidazolate framework membrane reactor

255th National Meeting (2018)

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