Molecularly-Limited Fractal Surface Area of Mineral Powders

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F16%3A86098063" target="_blank" >RIV/61989100:27350/16:86098063 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27360/16:86098063 RIV/61989100:27740/16:86098063

Result on the web

<a href="http://www.mdpi.com/2075-163X/6/2/44" target="_blank" >http://www.mdpi.com/2075-163X/6/2/44</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/min6020044" target="_blank" >10.3390/min6020044</a>

Result language

angličtina

Original language name

Molecularly-Limited Fractal Surface Area of Mineral Powders

Original language description

The topic of the specific surface area (SSA) of powders is not sufficiently described in the literature in spite of its nontrivial contribution to adsorption and dissolution processes. Fractal geometry provides a way to determine this parameter via relation SSA similar to x((D - 3))s((2 - D)), where x (m) is the particle size and s (m) is a scale. Such a relation respects nano-, micro-, or macro-topography on the surface. Within this theory, the fractal dimension 2 D < 3 and scale parameter s plays 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. If the fractality of the surface is high, the SSA does not depend on the particle size distribution and vice versa. In this paper, the SSA parameter is analyzed from the point of view of adsorption and dissolution processes. In the case of adsorption, a new equation for the SSA, depending on the term (2 - D).(s(2) - s(BET))/s(BET), is derived, where s(BET) and s(2) are effective cross-sectional diameters for BET and new adsorbates. Determination of the SSA for the dissolution process appears to be very complicated, since the fractality of the surface may change in the process. Nevertheless, the presented equations have good application potential.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

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)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Minerals

ISSN

2075-163X

e-ISSN

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Volume of the periodical

6

Issue of the periodical within the volume

2

Country of publishing house

CH - SWITZERLAND

Number of pages

14

Pages from-to

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UT code for WoS article

000380038500021

EID of the result in the Scopus database

2-s2.0-84973917921