Molekularly-limited fractal surface area of powders

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F13%3A86088351" target="_blank" >RIV/61989100:27740/13:86088351 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27640/13:86088351
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Molekularly-limited fractal surface area of powders
Original language description
Specific surface area (SSA) of powders can be determined using a fractal geometry by the relation SSA xA DxV -3s(2 - D), where xA is the particle size with average surface area and the xV the particle size with average volume. Such relation respects nano, micro or macro irregularities on the surface. Within this theory the fractal dimension D 3 and scale parameter s (equals to the linear dimension of an interacting adsorbate molecule) play a significant role. The parameter D may be determined from BET or dissolution measurements on several samples changing the powder particle sizes or sizes of adsorbate molecules. To reach good accuracy of the SSA value, one must know the fractal dimension D very precisely. Standard uncertainty of this parameter on thelevel 0.02 contributes to the total standard uncertainty of the SSA value within 30%. In the end of the paper, a new equation for SSA, depending on term (2 - D) (s2 - sBET) /sBET, where sBET and s2 are effective cross sectional diameters
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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