Production of High Surface Area Silica Particles by Acoustodispersion Precipitation

dc.contributor.advisorHarris, Michael Ten_US
dc.contributor.authorMatthews, Jermey Norman Augustusen_US
dc.contributor.departmentChemical Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.description.abstractA continuous Acoustodispersion Precipitation Reaction (APR) flow process was applied to the production of high surface area silica particles. An ultrasonic reactor was used to atomize and disperse silica gel into a drying chamber for further solidification. Upon particle synthesis, the resulting powder was analyzed The effect of sodium silicate concentration, volumetric flow rate through the ultrasonic nozzle, and drying temperature on particle diameter and specific surface area (Asp) was observed. A mathematical equation was derived using the Box-Behnken statistical design. SEM imaging was employed in measuring the particle size and observing the morphology, and BET theory was exploited in collecting surface area data. SEM images showed porous and spherical silica particles. The number average diameter of the particles ranged from 13 - 55 microns. Most of the Asp values ranged from 100 300 m2/g. The highest Asp achieved was 342 m2/g and the lowest was 19.9 m2/g.en_US
dc.format.extent1235210 bytes
dc.subject.pqcontrolledEngineering, Chemicalen_US
dc.subject.pqcontrolledEngineering, Materials Scienceen_US
dc.subject.pquncontrolledsol-gel processen_US
dc.subject.pquncontrolledsilica gelen_US
dc.subject.pquncontrolledultrasonic atomizationen_US
dc.subject.pquncontrolledspecific surface areaen_US
dc.titleProduction of High Surface Area Silica Particles by Acoustodispersion Precipitationen_US


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