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- Stöber_process abstract "The Stöber process is a physical chemistry process for the generation of monodisperse particles of silica. The process was discovered in 1968 by Werner Stöber et al. building on earlier work by G. Kolbe in published in 1956. The topic has since been widely researched. Tetraethyl orthosilicate is added to an excess of water containing a low molar-mass alcohol such as ethanol and containing ammonia. The resulting solution is then stirred. The resulting silica particles have diameters between 50 and 2000 nanometers depending on type of silicate ester used, type of alcohol used and volume ratios. A particle size up to 1000 micrometres has been reported in a modified emulsion technique. The reactions taking place are hydrolysis of the silyl ether to a silanol followed by condensation reactions. The particles have been analysed by light scattering.The process is believed to take place via a LaMer model (monomer addition) in which nucleation is a fast process, followed by a particle growth process without further nucleation. In an alternative model called controlled aggregation, the particles grow by aggregation of smaller particles. This model is supported by microgravity experiments and by SAXS analysis. Kinetics have been investigated with variation in pH.Reported morphological variations are a PEG graft and core-shell morphologies based on cyclen, polyamines and polystyrene.Microporous silica particles can be obtained through organic templating followed by calcination. Reported organic additives for this process are cetyltrimethylammonium bromide and glycerol".
- Stöber_process wikiPageID "32297166".
- Stöber_process wikiPageLength "9189".
- Stöber_process wikiPageOutDegree "28".
- Stöber_process wikiPageRevisionID "626270061".
- Stöber_process wikiPageWikiLink Alcohol.
- Stöber_process wikiPageWikiLink Ammonia.
- Stöber_process wikiPageWikiLink Calcination.
- Stöber_process wikiPageWikiLink Category:Physical_chemistry.
- Stöber_process wikiPageWikiLink Category:Silicon_chemistry.
- Stöber_process wikiPageWikiLink Cetrimonium_bromide.
- Stöber_process wikiPageWikiLink Cetyltrimethylammonium_bromide.
- Stöber_process wikiPageWikiLink Condensation_reaction.
- Stöber_process wikiPageWikiLink Cyclen.
- Stöber_process wikiPageWikiLink Dispersity.
- Stöber_process wikiPageWikiLink Emulsion.
- Stöber_process wikiPageWikiLink Ethanol.
- Stöber_process wikiPageWikiLink Formaldehyde.
- Stöber_process wikiPageWikiLink Glycerol.
- Stöber_process wikiPageWikiLink Hydrolysis.
- Stöber_process wikiPageWikiLink LaMer_model.
- Stöber_process wikiPageWikiLink Light_scattering.
- Stöber_process wikiPageWikiLink Micro-g_environment.
- Stöber_process wikiPageWikiLink Microgravity.
- Stöber_process wikiPageWikiLink Microporous_material.
- Stöber_process wikiPageWikiLink Monodisperse.
- Stöber_process wikiPageWikiLink Particle.
- Stöber_process wikiPageWikiLink Physical_chemistry.
- Stöber_process wikiPageWikiLink Polyethylene_glycol.
- Stöber_process wikiPageWikiLink Polystyrene.
- Stöber_process wikiPageWikiLink Resorcinol.
- Stöber_process wikiPageWikiLink SAXS.
- Stöber_process wikiPageWikiLink Silanol.
- Stöber_process wikiPageWikiLink Silica.
- Stöber_process wikiPageWikiLink Silicon_dioxide.
- Stöber_process wikiPageWikiLink Silyl_ether.
- Stöber_process wikiPageWikiLink Small-angle_X-ray_scattering.
- Stöber_process wikiPageWikiLink Tetraethyl_orthosilicate.
- Stöber_process wikiPageWikiLinkText "Stöber process".
- Stöber_process wikiPageWikiLinkText "silica".
- Stöber_process hasPhotoCollection Stöber_process.
- Stöber_process wikiPageUsesTemplate Template:Reflist.
- Stöber_process subject Category:Physical_chemistry.
- Stöber_process subject Category:Silicon_chemistry.
- Stöber_process comment "The Stöber process is a physical chemistry process for the generation of monodisperse particles of silica. The process was discovered in 1968 by Werner Stöber et al. building on earlier work by G. Kolbe in published in 1956. The topic has since been widely researched. Tetraethyl orthosilicate is added to an excess of water containing a low molar-mass alcohol such as ethanol and containing ammonia. The resulting solution is then stirred.".
- Stöber_process label "Stöber process".
- Stöber_process sameAs m.0gxzwpw.
- Stöber_process sameAs Q7630115.
- Stöber_process sameAs Q7630115.
- Stöber_process sameAs 史托伯法.
- Stöber_process wasDerivedFrom Stöber_process?oldid=626270061.
- Stöber_process isPrimaryTopicOf Stöber_process.