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dc.contributor.authorRadlinski, Andrzejen_US
dc.contributor.authorCongo, Taraen_US
dc.contributor.authorGray, Evanen_US
dc.contributor.authorBlach, Tomaszen_US
dc.contributor.authorJ. Cookson, Daviden_US
dc.date.accessioned2017-05-03T11:32:48Z
dc.date.available2017-05-03T11:32:48Z
dc.date.issued2009en_US
dc.date.modified2010-06-29T06:42:51Z
dc.identifier.issn01665162en_US
dc.identifier.doi10.1016/j.coal.2008.09.015en_AU
dc.identifier.urihttp://hdl.handle.net/10072/30209
dc.description.abstractTime- and position-resolved synchrotron small angle X-ray scattering data were acquired from samples of two Australian coal seams: Bulli seam (Bulli 4, Ro=1.42%, Sydney Basin), which naturally contains CO2 and Baralaba seam (Ro=0.67%, Bowen Basin), a potential candidate for sequestering CO2. This experimental approach has provided unique, pore-size-specific insights into the kinetics of CO2 sorption in the micro- and small mesopores (diameter 5 to 175 ũ and the density of the sorbed CO2 at reservoir-like conditions of temperature and hydrostatic pressure. For both samples, at pressures above 5 bar, the density of CO2 confined in pores was found to be uniform, with no densification in near-wall regions. In the Bulli 4 sample, CO2 first flooded the slit pores between polyaromatic sheets. In the pore-size range analysed, the confined CO2 density was close to that of the free CO2. The kinetics data are too noisy for reliable quantitative analysis, but qualitatively indicate faster kinetics in mineral-matter-rich regions. In the Baralaba sample, CO2 preferentially invaded the smallest micropores and the confined CO2 density was up to five times that of the free CO2. Faster CO2 sorption kinetics was found to be correlated with higher mineral matter content but, the mineral-matter-rich regions had lower-density CO2 confined in their pores. Remarkably, the kinetics was pore-size dependent, being faster for smaller pores. These results suggest that injection into the permeable section of an interbedded coal-clastic sequence could provide a viable combination of reasonable injectivity and high sorption capacity.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherElsevier BVen_US
dc.publisher.placeNetherlandsen_US
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom80en_US
dc.relation.ispartofpageto89en_US
dc.relation.ispartofissue1-2en_US
dc.relation.ispartofjournalInternational Journal of Coal Geologyen_US
dc.relation.ispartofvolume77en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchStructural Geologyen_US
dc.subject.fieldofresearchcode040312en_US
dc.titleSmall angle X-ray scattering mapping and kinetics study of sub-critical CO2 sorption by two Australian coalsen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, School of Natural Sciencesen_US
gro.date.issued2009
gro.hasfulltextNo Full Text


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