Preparation of ultrahigh surface area porous carbons templated using zeolite 13X for enhanced hydrogen storage

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dc.contributor.authorMasika, E.
dc.contributor.authorMokaya, R.
dc.date.accessioned2014-10-14T12:53:10Z
dc.date.available2014-10-14T12:53:10Z
dc.date.issued2013-05
dc.descriptionDOI: 10.1016/j.pnsc.2013.04.007en_US
dc.description.abstractIn this report, the use of zeolite 13X as a template to generate ultrahigh surface area carbons, via a two-step process combining liquid impregnation and chemical vapour deposition is explored. The first step in the nanocasting process involves impregnation of zeolite 13X with furfuryl alcohol and the second step consists of chemical vapour deposition (CVD) of ethylene at 700 °C. Zeolite-like structural ordering was achieved for zeolite templated carbons (ZTCs) prepared at variable heating ramp rates of 5, 10 or 15 °C/min. The textural properties of ZTCs prepared at all heating ramp rates were comparable with small variations in which the lowest ramp rate (5 °C/min) generated ZTC with highest surface area and pore volume of 3332 m2/g and 1.66 cm3/g respectively. The carbon materials achieved a remarkable hydrogen uptake of 7.3 wt% at 20 bar and 77 K which is the highest ever recorded for carbon materials. This report also explores the mechanical stability of the ZTCs via compaction at up to 10t (equivalent to 740 MPa) in which the compacted samples showed minimal modification and retained high hydrogen storage capacity.en_US
dc.identifier.citationProgress in Natural Science: Materials International Volume 23, Issue 3, June 2013, Pages 308–316en_US
dc.identifier.issnISSN: 1002-0071
dc.identifier.urihttp://ac.els-cdn.com/S1002007113000671/1-s2.0-S1002007113000671-main.pdf?_tid=9e7edb32-53a0-11e4-8414-00000aab0f27&acdnat=1413291184_6515644163735667b75273bc2ae74b6b
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/11455
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectHydrogenstorageen_US
dc.subjectZeolite templatedcarbonen_US
dc.subjectZeolite 13Xen_US
dc.subjectHigh surfaceareaen_US
dc.subjectMicroporesen_US
dc.titlePreparation of ultrahigh surface area porous carbons templated using zeolite 13X for enhanced hydrogen storageen_US
dc.typeArticleen_US
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