scholarly journals The Molecular Cross-sectional Areas for the Determination of Specific Surface Areas of Solids. I. Carbon Black

1959 ◽  
Vol 32 (4) ◽  
pp. 356-361 ◽  
Author(s):  
Kumasaburo Kodera ◽  
Yoshito Onishi
Keyword(s):  
Carbon Black ◽  
Specific Surface ◽  
Cross Sectional ◽  
Surface Areas ◽  
Specific Surface Areas

A Comparison of Methods for Determining Surface Areas of Carbon Black

1973 ◽  
Vol 46 (1) ◽  
pp. 192-203 ◽  
Author(s):  
R. A. Klyne ◽  
B. D. Simpson ◽  
M. L. Studebaker
Keyword(s):  
Carbon Black ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Surface Areas ◽  
Furnace Black ◽  
Area Increase ◽  
Experimental Errors ◽  
Specific Surface Areas ◽  
Surface Area Increase

Abstract 1. The various tint tests correlate with each other—it does not make much difference which of the three procedures is used. The discrimination between similar blacks is comparable. Specific surface areas obtained by the three methods are comparable and differences appear to be due to experimental errors. (Compare Figures 5–7). 2. Surface areas larger than some 90 to 100 m2/g cannot be reliably determined from tint strength measurements alone. 3. Structure exerts a pronounced effect on tint strength of furnace blacks, especially above 90 to 100 m2/g. Porosity and/or composition are apparently also variables which affect tinting strength. 4. Densichron reflectance on the dry carbon black can be used to estimate specific surface areas up to about 140 m2/g; but, since theabsoluteerrorincreases as the specific surface area increases, this method loses some of its reliability at values above about 110 m2/g. The relative error in reflectance determinations does not vary greatly over the furnace-black range. Densichron reflectance is influenced by composition, evidently due to composition-related differences in optical properties of the carbons. 5. In CTAB adsorption measurements, titration errors and handling errors tend to be rather constant for blacks of different surface area. Hence, CTAB permits better discrimination among blacks of small particle size. 6. The errors in Densichron reflectance surface area increase with specific surface area. Hence, the deviations between CTAB and reflectance surface area which are due to experimental error increase with the surface area of the sample.

Evaluations of the BET, I-Point, and α-Plot Procedures for the Routine Determination of External Specific Surface Areas of Highly Dispersed and Porous Silicas

Langmuir ◽  
2011 ◽  
Vol 27 (1) ◽  
pp. 187-195 ◽  
Author(s):  
Kenneth E. Collins ◽  
Carol H. Collins ◽  
Camila M. Maroneze ◽  
Vanessa Cappovila ◽  
Rogério Custodio
Keyword(s):  
Specific Surface ◽  
Surface Areas ◽  
Highly Dispersed ◽  
Specific Surface Areas

Determination of low specific surface areas of minerals and oxides by gas–solid chromatography

1982 ◽  
Vol 60 (22) ◽  
pp. 2859-2862 ◽  
Author(s):  
Peter R. Tremaine ◽  
Alfred G. Wikjord ◽  
Jacques C. Leblanc
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Retention Volume ◽  
Volume Data ◽  
Surface Areas ◽  
Specific Surface Areas ◽  
Bet Equation

Gas–solid chromatography is shown to provide a method for measuring the specific surface area of non-porous particulate mineral or oxide samples in the range 0.005 to 0.5 m2 g−1 with precision as high as ±10%. Mesitylene is a convenient sorbate and was found to occupy an area of 71 ± 5 Å2 per molecule on silicate surfaces, by calibration with glass particles having well defined surface geometries. The rather low values obtained for the C parameter, when fitting retention volume data to the BET equation, suggest that the area occupied by mesitylene may be affected by the surface on which it is adsorbed. Hydrocarbon contaminants are a major interference. No specialized instrumentation is required.

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