Assessement of Surface Parameters Existing In Widepores by the Corrected Modelless Method

A. M. Khalil

Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo, Egypt.

ABSTRACT:

The only reality in analysing the pore space is the adsorption isotherm and of the other methods followed in the analyses were derived and depend mainly on the adsorption isotherm. This will lead to the importance of careful analysis of the adsorption data as a controlling fader in getting a detailed picture for the pore space through the different analytical methods. The nature of the pores (surface area location and the magnitude) present is detected by Va—t analysis and the existing surface parameters within the widepores (surface area and pore volume) were calculated by the corrected modeless method. Over the past decade in our research laboratories, many applications of Va—t analysis and the corrected modelless method on some silicas, aluminas and on some selected zinc oxide samples were carried out. Some interesting conclusions were obtained in relating the effect of chemistry of the surface on the extent of multilayer formation, This is directly reflected on the surface characteristics of the tested samples and consequently affects the magnitualiy existing) within the wide-/or macro-pores present. In conclusion, chemistry of the surface might be considered to display a significant role in determining the extent of multilayer formation and this is reflected in an effective contribution of increasing / or changing the existing surface parameters (as compared with the calculated values) associating the presence of macro* / or wide-pores*

KEYWORDS:

Surface; Parameters; Corrected; Modelless

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Copy the following to cite this article: Khalil A. M. Assessement of Surface Parameters Existing In Widepores by the Corrected Modelless Method. Orient J Chem 1988;4(3).

Copy the following to cite this URL: Khalil A. M. Assessement of Surface Parameters Existing In Widepores by the Corrected Modelless Method. Orient J Chem 1988;4(3). Available from: http://www.orientjchem.org/?p=42040