Non-Calorimetric Determination of the Adsorption Heat of Volatile Organic Compounds under Dynamic Conditions

Catalysts

Abdelhamid Korrir²  Achraf El Kasmi²  Mhamed Assebban²  Ahmed Souikny²  Soukaina Haffane²  Ouafae Achak²  Tarik Chafik¹ 

[1] Laboratory LGCVR, UAE/L01FST, Faculty of Sciences and Techniques, University Abdelmalek Essaadi, B.P. 416 Tangier, Morocco;

关键词: clay;    bentonite;    silica;    dynamic adsorption;    FTIR;    heat of adsorption;    isosteric;    TPD;    TPAE;   

DOI  :  10.3390/catal5020653

来源: mdpi

【 摘 要 】

Avoiding strong chemical bonding, as indicated by lower heat of adsorption value, is among the selection criteria for Volatile Organic Compounds adsorbents. In this work, we highlight a non-calorimetric approach to estimating the energy of adsorption and desorption based on measurement of involved amounts, under dynamic conditions, with gaseous Fourier Transform Infrared spectroscopy. The collected data were used for obtaining adsorption heat values through the application of three different methods, namely, isosteric, temperature programmed desorption (TPD), and temperature-programmed adsorption equilibrium (TPAE). The resulting values were compared and discussed with the scope of turning determination of the heat of adsorption with non-calorimetric methods into a relevant decision making tool for designing cost-effective and safe operating of adsorption facilities.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.