2005 Volume 31 Issue 5 Pages 361-364
AFI-type structure ferroaluminophosphate zeolite (FAPO–5) was examined as an AHP adsorbent. FAPO–5 with iron content of 2–8 mol% (Functional Adsorbent Material-Zeolite 01; FAM–Z01) was selected for further testing. The water vapor adsorption isotherm of FAM–Z01 was S-shaped and highly dependent on temperature, and almost no hysteresis was observed with adsorption/desorption at 333 K and 348 K. No changes were observed in the properties of FAM–Z01 after 200,000 cycles of water vapor adsorption-desorption, indicating that FAM–Z01 is suitably durable for practical use. When the AHP was operated under conditions of TL/TM/TH=283 K/303 K/333 K, the adsorption capacity of FAM–Z01 was 4 times that of silica gel.
