Change search
ReferencesLink to record
Permanent link

Direct link
Preparation of graded silicalite-1 substrates for all-zeolite membranes with excellent CO2/H-2 separation performance
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Show others and affiliations
Number of Authors: 6
2015 (English)In: Journal of Membrane Science, ISSN 0376-7388, E-ISSN 1873-3123, Vol. 493, 206-211 p.Article in journal (Refereed) Published
Abstract [en]

Graded silicalite-1 substrates with a high gas permeability and low surface roughness have been produced by pulsed current processing of a thin coating of a submicron silicalite-1 powder onto a powder body of coarser silicalite-1 crystals. Thin zeolite films have been hydrothermally grown onto the graded silicalite-1 support and the all-zeolite membranes display an excellent CO2/H-2 separation factor of 12 at 0 degrees C and a CO2 permeance of 21.3 x 10(-7) mol m(-2) s(-1) Pa-1 for an equimolar CO2/H-2 feed at 505 kPa and 101 kPa helium sweep gas. Thermal cracking estimates based on calculated surface energies and measured thermal expansion coefficients suggest that all-zeolite membranes with a minimal thermal expansion mismatch between the graded substrate and the zeolite film should remain crack-free during thermal cycling and the critical calcination step.

Place, publisher, year, edition, pages
2015. Vol. 493, 206-211 p.
Keyword [en]
All-zeolite membranes, Membrane separation, Gas separation, Cracking, Thermal cycling
National Category
Chemical Engineering Chemical Sciences
URN: urn:nbn:se:su:diva-121484DOI: 10.1016/j.memsci.2015.06.020ISI: 000360554300021OAI: diva2:860624
Available from: 2015-10-13 Created: 2015-10-05 Last updated: 2015-10-13Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Akhtar, FaridBergström, Lennart
By organisation
Department of Materials and Environmental Chemistry (MMK)
In the same journal
Journal of Membrane Science
Chemical EngineeringChemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 65 hits
ReferencesLink to record
Permanent link

Direct link