Colloidal Processing and Thermal Treatment of Binderless Hierarchically Porous Zeolite 13X Monoliths for CO2 Capture
2011 (English)In: Journal of The American Ceramic Society, ISSN 0002-7820, E-ISSN 1551-2916, Vol. 94, no 1, 199-205 p.Article in journal (Refereed) Published
Adsorbents with high surface area are potential candidates forefficient postcombustion CO2 capture. Binderless zeolite 13Xmonoliths with a hierarchical porosity and high CO2 uptakehave been produced by slip casting followed by pressurelessthermal treatment. The zeolite powder displayed an isoelectricpoint at pH 4.7 and electrostatically stabilized suspensions couldbe prepared at alkaline pH. The volume fraction-dependentsteady shear viscosity could be fitted to a modified Krieger–Dougherty model with a maximum volume fraction of 0.66. Thenarrow temperature range where monoliths could be producedwithout significant loss of the microporous surface area wasidentified and related to the phase behavior of the 13X material.Slip casting of concentrated suspensions followed by thermaltreatment of the powder bodies at a temperature of 8001Cwithout holding time resulted into strong hierarchically porouszeolite 13X monolith that displayed a CO2 uptake larger than29 wt%.
Place, publisher, year, edition, pages
2011. Vol. 94, no 1, 199-205 p.
Research subject Mathematical Statistics
IdentifiersURN: urn:nbn:se:su:diva-46707DOI: 10.1111/j.1551-2916.2010.04044.xISI: 000285972100028OAI: oai:DiVA.org:su-46707DiVA: diva2:372153
ProjectsBerzelii Center EXSELENT on Porous Materials
authorCount :22010-11-262010-11-242012-10-30Bibliographically approved