Abstract

A good correlation was found between apparent BET surface area and total pore volume determined for a number of active charcoals by measurement of the nitrogen adsorption isotherms at 77 K. A similar correlation is also illustrated in which apparent BET surface area is calculated from the uptake of nitrogen at relative pressure p p° = 0.1 . This method is suggested as a rapid means of estimating pore volume in predominantly microporous carbons.

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