Continuous synthesis of doped layered double hydroxides in a meso-scale flow reactor
dc.contributor.author | Yaseneva, P | |
dc.contributor.author | An, N | |
dc.contributor.author | Finn, M | |
dc.contributor.author | Tidemann, N | |
dc.contributor.author | Jose, N | |
dc.contributor.author | Voutchkova-Kostal, A | |
dc.contributor.author | Lapkin, A | |
dc.date.accessioned | 2019-01-22T00:30:47Z | |
dc.date.available | 2019-01-22T00:30:47Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 1385-8947 | |
dc.identifier.uri | https://www.repository.cam.ac.uk/handle/1810/288296 | |
dc.description.abstract | Layered 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.sponsorship | National Research Foundation, Singapore | |
dc.publisher | Elsevier BV | |
dc.title | Continuous synthesis of doped layered double hydroxides in a meso-scale flow reactor | |
dc.type | Article | |
prism.endingPage | 199 | |
prism.publicationDate | 2019 | |
prism.publicationName | Chemical Engineering Journal | |
prism.startingPage | 190 | |
prism.volume | 360 | |
dc.identifier.doi | 10.17863/CAM.35612 | |
dcterms.dateAccepted | 2018-11-26 | |
rioxxterms.versionofrecord | 10.1016/j.cej.2018.11.197 | |
rioxxterms.version | AM | |
rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
rioxxterms.licenseref.startdate | 2019-03-15 | |
dc.contributor.orcid | Lapkin, A [0000-0001-7621-0889] | |
dc.identifier.eissn | 1873-3212 | |
rioxxterms.type | Journal Article/Review | |
pubs.funder-project-id | National Research Foundation Singapore (via Cambridge Centre for Advanced Research and Education in Singapore (CARES)) (unknown) | |
cam.orpheus.success | Thu Jan 30 10:53:24 GMT 2020 - Embargo updated | |
rioxxterms.freetoread.startdate | 2020-03-15 |
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