Zeolite monoliths for air separation: part 1: manufacture and characterisation

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Abstract

A 2 mm square lattice channel monolith with a 0.98 mm wall thickness and an overall diameter of 20 mm has been prepared from 5A zeolite powder and Na-bentonite (as a binder) by the unit operations of paste preparation, extrusion, drying and firing. The manufactured monolith, which shows good strength, retains the crystal structure and micropore size of the source 5A zeolite powder, and adsorption measurements made by the constant volume method confirm that the monolith exhibits an equilibrium performance equal to that of commercial 5A zeolite pellets. In addition, the monolith possesses a higher macroporosity than the commercial pellets, a feature which is expected to be of benefit in pressure swing adsorption air separation processes.
Original languageEnglish
Pages (from-to)921-930
Number of pages10
JournalChemical Engineering Research & Design
Volume76
Issue number8
DOIs
Publication statusPublished - Nov 1998

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