Encyclopedia of Membranes

2016 Edition
| Editors: Enrico Drioli, Lidietta Giorno

LTA Zeolite Membranes in Pervaporation

Reference work entry
DOI: https://doi.org/10.1007/978-3-662-44324-8_1275
LTA Zeolite Membrane in Pervaporation. Pervaporation (PV) or vapor permeation (VP) is a membrane-based separation process which shows a high efficiency for the separation of azeotropes and close-boiling mixtures (Huang 1991). In general, zeolites with low Si/Al ratio can be adopted to produce hydrophilic pervaporative membranes for dewatering of organics, as exemplified by LTA, FAU, SOD, and T-type zeolites (Bowen et al. 2004). Among those, LTA zeolite membranes exhibit the highest water to alcohol selectivity up to present, owing to its lowest Si/Al ratio and proper pore size (0.4 nm) that can block organic solvent molecules bulkier than water. LTA zeolite membranes have been widely used for dewatering various organics, including alcohols, aldehydes, ketones, ethers, esters, amines, and amides. Typical performances of LTA membrane are listed in Table 1.
LTA Zeolite Membranes in Pervaporation, Table 1

Typical PV/VP performances of LTA zeolite membrane for dewatering organics

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References

  1. Bowen TC, Noble RD, Falconer JL (2004) Fundamentals and applications of pervaporation through zeolite membranes. J Membr Sci 245:1–33CrossRefGoogle Scholar
  2. Huang RYM (1991) Pervaporation membrane separation processes, Elsevier. ISBN 0444882278Google Scholar
  3. Morigami Y, Kondo M, Abe J, Kita H, Okamoto K (2001) The first large-scale pervaporation plant using tubular-type module with zeolite NaA membrane. Sep Purif Tech 25:251–260CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.State Key Laboratory of CatalysisDalian Institute of Chemical Physics, CASDalianChina