'Periodica Polytechnica Budapest University of Technology and Economics'
Abstract
Diffusion processes play an important role in many areas of science and technology. Since pore diffusion processes strongly depend on the pore texture of the porous solid, a desired value of an effective diffusion coefficient, D, has to be determined experimentally. Although, several measuring techniques have been described in the open literature, only a few of them can be used to set up a routine procedure. One of these methods is the so-called Up-Take Technique. The evaluation of the experimental data in this case, however, can lead to difficulties which will be discussed in detail
