Estimation of polarity of solids by gas chromatography

✍ Scribed by D.S. Mathur; N.C. Saha

• Book ID: 104145279
• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 358 KB
• Volume: 138
• Category: Article
• ISSN: 1873-3778
• DOI: 10.1016/s0021-9673(00)97995-0

✦ Synopsis

An understanding of the nature and acidity of solids is important, both for gas chromatographers and for catalyst technologists. In this paper, an attempt has been made to correlate polarity with some gas chromatografihic parameters by means of thermodynamic factors. A mathematical correlation between the variation of Gibbs free energy of adsorption and the number of methylene groups in an homologous series has been developed. The relationship is rectilinear, and the slope of the line gives an indication of the polarity of the solid. Results are presented for alumina, Chromosorb and Porasil.