Fabrication and characterization of porous mullite ceramics derived from fluoride-assisted Metakaolin-Al(OH)3 annealing for filtration applications
| dc.contributor.author | Abdullayev, Amanmyrat | |
| dc.contributor.author | Avcioglu, Celal | |
| dc.contributor.author | Fey, Tobias | |
| dc.contributor.author | Hilger, André | |
| dc.contributor.author | Osenberg, Markus | |
| dc.contributor.author | Manke, Ingo | |
| dc.contributor.author | Henning, Laura M. | |
| dc.contributor.author | Gurlo, Aleksander | |
| dc.contributor.author | Bekheet, Maged F. | |
| dc.date.accessioned | 2022-08-01T14:50:02Z | |
| dc.date.available | 2022-08-01T14:50:02Z | |
| dc.date.issued | 2022-02-23 | |
| dc.description.abstract | In this work, polycrystalline mullite whiskers are synthesized by fluoride-assisted method from metakaolin and several aluminum-containing compounds such as γ-Al(OH)3, AlF3·3H2O, and α-Al2O3 (corundum). The mullite formation and crystallization are assessed both in ex situ and in situ synchrotron X-ray diffraction experiments under synthesis conditions. Polycrystalline mullite starts to form from metakaolin, Al(OH)3, and AlF3·3H2O reactants at 680 °C, whereas mullite does not form even at 1000 °C when corundum is used. Porous mullite ceracmics are fabricated at sintering temperatures between 1000 and 1700 °C and tested for water permeance. Scanning Electron Microscopy (SEM) and synchrotron X-ray tomography (μCT) reveal that ceramics are comprised of pore channels with an interlocked network of mullite whiskers. With competitive porosity (up to 63 %), compressive strength (up to 20 MPa), and pure water flux (up to 579 L/m2·h at 1 bar), fabricated mullite ceramics are promising candidates for water filtration and purification. | en |
| dc.identifier.eissn | 2666-5395 | |
| dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/17289 | |
| dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-16069 | |
| dc.language.iso | en | en |
| dc.relation.ispartof | 10.14279/depositonce-15348 | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en |
| dc.subject.ddc | 666 Keramiktechnologie und zugeordnete Technologien | de |
| dc.subject.ddc | 679 Andere Produkte aus einzelnen Werkstoffen | de |
| dc.subject.other | mullite whiskers | en |
| dc.subject.other | ceramic membranes | en |
| dc.subject.other | water filtration | en |
| dc.subject.other | in situ synchrotron X-ray diffraction | en |
| dc.subject.other | synchrotron X-ray tomography | en |
| dc.subject.other | μCT | en |
| dc.title | Fabrication and characterization of porous mullite ceramics derived from fluoride-assisted Metakaolin-Al(OH)3 annealing for filtration applications | en |
| dc.type | Article | en |
| dc.type.version | publishedVersion | en |
| dcterms.bibliographicCitation.articlenumber | 100240 | en |
| dcterms.bibliographicCitation.doi | 10.1016/j.oceram.2022.100240 | en |
| dcterms.bibliographicCitation.journaltitle | Open Ceramics | en |
| dcterms.bibliographicCitation.originalpublishername | Elsevier | en |
| dcterms.bibliographicCitation.originalpublisherplace | Amsterdam | en |
| dcterms.bibliographicCitation.volume | 9 | en |
| tub.accessrights.dnb | free | en |
| tub.affiliation | Fak. 3 Prozesswissenschaften::Inst. Werkstoffwissenschaften und -technologien::FG Keramische Werkstoffe | de |
| tub.affiliation.faculty | Fak. 3 Prozesswissenschaften | de |
| tub.affiliation.group | FG Keramische Werkstoffe | de |
| tub.affiliation.institute | Inst. Werkstoffwissenschaften und -technologien | de |
| tub.publisher.universityorinstitution | Technische Universität Berlin | en |