Adsorption thermodynamics of carbofuran on Sn (IV) arsenosilicate in H+, Na+ and Ca2+ forms

Thermodynamics of the H+Na+ and H+Cs+ ex

Thermodynamics of the H+Na+ and H+Cs+ exchange on tin(IV) antimonate in methanolic solution

✍ I.M. El-Naggar; E.S. Zakaria; H.F. Aly 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 502 KB

Addition of methanol decreases AG", AH' and As0 of the exchange of Naf or Cs+ for H+ in tin(W) antimonate. Thus, the increase of selectivity constant is due to the decrease in the enthalpy term. On going from 30 to 90% (w/w) methanol, negative enthalpy and entropy changes occur may be due to chemiso