Effect of PVP Intermediate Layer on the Properties of SAPO 34 Membrane | Zendy

Jugal Kishore Das | Zendy; Nandini Das | Zendy; Sibdas Bandyopadhyay | Zendy

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Effect of PVP Intermediate Layer on the Properties of SAPO 34 Membrane

Author(s) -

Jugal Kishore Das,

Nandini Das,

Sibdas Bandyopadhyay

Publication year - 2012

Publication title -

advances in materials science and engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.356

H-Index - 42

eISSN - 1687-8442

pISSN - 1687-8434

DOI - 10.1155/2012/650217

Subject(s) - materials science , membrane , permeation , polyvinylpyrrolidone , chemical engineering , hydrothermal circulation , layer (electronics) , hydrothermal synthesis , polymer chemistry , nanotechnology , chemistry , biochemistry , engineering

SAPO 34 zeolite membranes were prepared on a tubular mullite support. Before membrane preparation, the support surfaces were coated with seed crystals. Seeds particles were prepared by hydrothermal synthesis. Before seeding, the substrates were treated with polyvinylpyrrolidone (PVP) to orient the seeds. Both the treated and untreated supports were seeded, and membranes were synthesized on those support tubes by ex situ hydrothermal method. The PVP molecule exists in the two resonance structures. Hence the acylamino bond –N+ = C–O-– acts as intermediate linker between support surface and seed surface. Due to charge interaction, the seed crystals were anchored strongly to support surface. The synthesized membranes along with seed crystals were characterized by XRD, FESEM, and EDAX analysis. The single-gas permeation with CO2 and H2 was investigated. Up to 5 bar of feed pressure, the permselectivity of CO2 and H2 was as high as 4.2

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