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dc.contributor.authorYaseneva, Polina
dc.contributor.authorAn, N
dc.contributor.authorFinn, M
dc.contributor.authorTidemann, N
dc.contributor.authorJose, Nicholas
dc.contributor.authorVoutchkova-Kostal, A
dc.contributor.authorLapkin, Alexei
dc.date.accessioned2019-01-22T00:30:47Z
dc.date.available2019-01-22T00:30:47Z
dc.date.issued2019-03-15
dc.identifier.issn1385-8947
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/288296
dc.description.abstractLayered double hydroxides are a class of low-cost structured nanomaterials with many potential applica-tions in environmental catalysis and sustainable technologies. Their large-scale use is hindered by the chal-lenge of reproducible synthesis at scale. Here we report a general, readily scalable process for the repro-ducible synthesis of transition metal doped hydrotalcites using a two-step process: co-precipitation in a mm-scale (meso-scale) continuous flow reactor, followed by aging. We have shown that co-precipitation in flow at a residence time close to the micromixing time affords good control of particle formation. Re-producible synthesis allowed us, for the first time, to investigate the formation of the pore morphology of hydrotalcites and their thermal stability as a function of metal doping. The obtained samples exhibited sur-face areas (80-150 m2 g-1) higher than those typically attained in batch syntheses, with very low standard deviation between the samples, a high degree of crystallinity and small crystallite sizes, in the range of 9.5-11.9 nm, depending on composition. A systematic characterization allowed us to elucidate the mechanism of the pore morphology formation: the crystallites were found to agglomerate into disk-like platelets, whereas the pore structure of the hydrotalcites is formed by agglomeration of the platelets.
dc.description.sponsorshipNational Research Foundation, Singapore
dc.publisherElsevier BV
dc.titleContinuous synthesis of doped layered double hydroxides in a meso-scale flow reactor
dc.typeArticle
prism.endingPage199
prism.publicationDate2019
prism.publicationNameChemical Engineering Journal
prism.startingPage190
prism.volume360
dc.identifier.doi10.17863/CAM.35612
dcterms.dateAccepted2018-11-26
rioxxterms.versionofrecord10.1016/j.cej.2018.11.197
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2019-03-15
dc.contributor.orcidJose, Nicholas [0000-0003-2493-5970]
dc.contributor.orcidLapkin, Alexei [0000-0001-7621-0889]
dc.identifier.eissn1873-3212
rioxxterms.typeJournal Article/Review
pubs.funder-project-idNational Research Foundation Singapore (via Cambridge Centre for Advanced Research and Education in Singapore (CARES)) (unknown)
cam.orpheus.successThu Jan 30 10:53:24 GMT 2020 - Embargo updated
rioxxterms.freetoread.startdate2020-03-15


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