2002•Unpublished venueRequires access
Influence of the synthesis condition on the crystallization of Fe-P zeolite molecular sieves in the absence of aluminum
H–Y. He, WQ Pang, Liu Wy, Feng Deng
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Abstract
Crystalline Fe-beta zeolite molecular sieves have been hydrothermally synthesized. Crystallization rate and average crystal size of Fe-beta zeolites have been investigated as a function of n(SiO2)/n(FeO2), n(NA(2)O)/n (SiO2) and n [(TEA)(2)O]/n (SiO2) ratios in the initial gel by using two silica sources. The iron content and structural characteristics of products have been determined by means of X-ray diffraction, IR spectra, DTA/TGA, SEM, NMR and ICP. The results show that the crystal sizes of Fc-beta zeolites are uniform. The DTA curve of Fe-beta, IR spectra and unit cell parameters of the resulting Fe-beta zeolites were obviously changed due to the incorporation of iron atoms into the framework.