Gas permeability method

The gas permeability method is a physical method for measuring surfaces , usually as the sum of the outer and inner surfaces of a solid, i.e. including the surface of any pores, channels or other cavities accessible to the gas. The Blaine device according to the DIN 66 127 standard is used for the measurement. The specific surface measured in this way can be related to the mass in the dimension m ² · kg ⁻¹ or to the geometric volume in the dimension m ² · m ⁻³ .

meaning

The measured specific surface is used to characterize the degree of comminution of solids ( ground cement ) or the uniformity of heterogeneous catalysts .

Individual evidence

^ S. Ebel and HJ Roth (editors): Lexikon der Pharmazie , Georg Thieme Verlag, 1987, p. 422, ISBN 3-13-672201-9 .
^ (Editors: Franz Rudolf Runge and Wilhelm Karl Schwarze): Textbook of chemical technology , Johann Ambrosius Barth Verlag, Leipzig, 1965, 27th edition, pp. 429–433.

[Ebel-1] S. Ebel and HJ Roth (editors): Lexikon der Pharmazie , Georg Thieme Verlag, 1987, p. 422, ISBN 3-13-672201-9 .

[Ost-Rassow-2] (Editors: Franz Rudolf Runge and Wilhelm Karl Schwarze): Textbook of chemical technology , Johann Ambrosius Barth Verlag, Leipzig, 1965, 27th edition, pp. 429–433.