AbstractSelf-bonded pellets of ETS-4 and ETS-10 zeolites are prepared by hydrothermal synthesis at 190 C from gels of compositionsxNa2O–0.6KF–yTiO2–1.28HCl–1.49SiO2–39.5H2O with 0.5 6 x 6 2.5 and 0.1 6 y 6 0.4. Two methods are used: the dry gel and thehydrated gel methods. The pellets produced by the hydrated gel methods have a higher crystallinity and in the case of ETS-10 no binderis required to hold strongly together the individual crystallites. The mechanical resistance is ca. 20–25% higher for these pellets withrespect to those prepared by the dry gel method. The crystallization rate is also higher and more regular crystals are formed.
Synthesis and characterization of self-bonded ETS-4 and ETS-10 pellets
DE LUCA, Pierantonio;
2008-01-01
Abstract
AbstractSelf-bonded pellets of ETS-4 and ETS-10 zeolites are prepared by hydrothermal synthesis at 190 C from gels of compositionsxNa2O–0.6KF–yTiO2–1.28HCl–1.49SiO2–39.5H2O with 0.5 6 x 6 2.5 and 0.1 6 y 6 0.4. Two methods are used: the dry gel and thehydrated gel methods. The pellets produced by the hydrated gel methods have a higher crystallinity and in the case of ETS-10 no binderis required to hold strongly together the individual crystallites. The mechanical resistance is ca. 20–25% higher for these pellets withrespect to those prepared by the dry gel method. The crystallization rate is also higher and more regular crystals are formed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
