Приказ основних података о документу
Production of Porous Silica Microparticles by Membrane Emulsification
dc.creator | Dragosavac, Marijana M. | |
dc.creator | Vladisavljević, Goran T. | |
dc.creator | Holdich, Richard G. | |
dc.creator | Stillwell, Michael T. | |
dc.date.accessioned | 2018-03-01T22:12:25Z | |
dc.date.available | 2018-03-01T22:12:25Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 0743-7463 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/4644 | |
dc.description.abstract | A method for the production of near-monodispersed spherical silica particles with controllable porosity based on the formation of uniform emulsion droplets using membrane emulsification is described. A hydrophobic metal membrane with a 15 mu m pore size and 200 mu m pore spacing was used to produce near-monodispersed droplets, with a mean size that could be controlled between 65 and 240 mu m containing acidified sodium silicate solution (with 4 and 6 wt % SiO(2)) in kerosene. After drying and shrinking, the final silica particles had a mean size in the range between 30 and 70 mu m. The coefficient of variation for both the droplets and the particles did not exceed 35%. The most uniform particles had a mean diameter of 40 mu m and coefficient of variation of 17%. By altering the pH of the sodium silicate solution and aging the gel particles in water or acetone, the internal structure of the silica particles was successfully modified, and both micro- and mesoporous near-monodispersed spherical particles were produced with an average internal pore size between 1 and 6 nm and an average surface area between 360 and 750 m(2) g(-1). A material balance and particle size analysis provided identical values for the internal voidage of the particles, when compared to the voidage as determined by BET analysis. | en |
dc.relation | UK Engineering and Physical Sciences Research Council | |
dc.rights | restrictedAccess | en |
dc.source | Langmuir | en |
dc.title | Production of Porous Silica Microparticles by Membrane Emulsification | en |
dc.type | article | en |
dcterms.abstract | Владисављевић Горан Т.; Драгосавац, Маријана М.; Стиллwелл, Мицхаел Т.; Холдицх, Рицхард Г.; | |
dc.citation.volume | 28 | |
dc.citation.issue | 1 | |
dc.citation.spage | 134 | |
dc.citation.epage | 143 | |
dc.identifier.wos | 000298904900022 | |
dc.identifier.doi | 10.1021/la202974b | |
dc.citation.rank | M21 | |
dc.identifier.pmid | 22059928 | |
dc.identifier.scopus | 2-s2.0-84855647339 |