journal article·2014-09

Effect of Water Content of Synthetic Hydrogel on Dehydration Performance of Nanoporous LTA Zeolite Membranes

Saeed Shirazian, Soheila Ghafarnejad Parto, Seyed Nezameddin Ashrafizadeh

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Abstract

Nanoporous LTA‐type zeolite membranes were synthesized on α‐Al 2 O 3 disk as substrate using secondary growth method. A gel formula of 1 Al 2 O 3 : 2 SiO 2 : 3.4 Na 2 O: W H 2 O in molar basis was chosen while its water content (W) was varied. Four levels of water contents of 140, 155, 175, and 200 were selected for membrane synthesis. The results showed that the best membrane was synthesized with water content of 155. The most efficient zeolite membrane showed a permeation flux of 0.5 kg/m 2 /h and a separation factor of 3800 in dehydration of a 5/95 (wt%) water/isopropanol mixture at 298 K.
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Research context

OpenAlex topics: Zeolite Catalysis and Synthesis · Membrane Separation and Gas Transport · Mesoporous Materials and Catalysis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Research Lab for Advanced Separation Processes Department of Chemical Engineering Iran University of Science and Technology (IUST) Narmak Tehran 16846‐13114 Iran

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