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Vapor phase esterification in a chabazite (CHA) zeolite membrane reactor was attempted not only to improve the productivity but also to avoid the use of liquid strong acid. CHA zeolite membrane was successfully prepared on a porous alumina tube by hydrothermal synthesis, showing a water permeance of ca. 2×10−7mol/(m2·s·Pa) and a selectivity of 2850 for H2O/EtOH at 130°C. As the alternate of the liquid...
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