Development of adsorbent materials for adsorption cooling, Research contract between FAHRENHEIT AG and CNR ICCOM, Second Technical report

Main goals of the activity were: i) water ad/desorption isotherms measurement for 2 high-silica Y zeolite samples having different structural Si/Al ration; ii) presentation of first results on the preparation of several exchanged Y-type zeolite samples. Firstly, the experimental gravimetric unit used for water adsorption measurement at equilibrium is presented. Then, the measurement procedure is precisely described. An important part of the measurement methodology assessment was the verification of the reliability of the instrument. With this aim, the same measurement protocol has been repeated few times on the same sample. Concerning the Ions Exchange experiments, a first series of ions exchanged zeolite Y have been prepared and characterized. More specifically, the preparation procedure for La(III), Ce(III), Pr(III), Nd(III) and Sm(III)-exchanged zeolites is described. Structural and chemical composition of the prepared samples have been verified by XRD and EDX analyses. Results achieved are discussed and compared with the original Y-type zeolite.