Synthesis and Microstructure of Fe-Substituted Mordenite
Atsushi Nakahira, Shunichi Nishimura and Satoru Ueda
Abstract:Fe-substituted mordenite, Al-mordenite (Al end-member) and Fe-mordenite (Fe end-member) were synthesized in the Na2O|Al2O3|Fe2O3|SiO2|H2O system under TEA (tetraethylammonium) as a template by hydrothermal method. The hydrothermal was performed in stainless Morey bomb at 150deg. The continuous solid solution of Fe into Al-site in mordenite was obtained for Al-Fe molar ratio (100/0, 75/25, 50/50, 25/75, 0/100)mordenites. The mordenite crystal of Al-end member was tablet-like with 10mm in diameter and 5mm in thickness. The morphology of Fe-substituted mordenite was platelet with 10mm in size. Fiber-like Fe-mordenite grew up to 30mm in length and 5mm in diameter. TEA was decomposed in air atmosphere at 440`450deg for Al-mordenite, Fe-mordenite, and Fe-substituted mordenites. Key Words:Synthesis, Microstructure, Mordenite, Hydrothermal synthesis,Fe-substituted