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. (1377). CHARACTERIZATION OF HIGH-SILICA MORDENITE OBTAINED BY DIRECT SYNTHESIS. , 9(2), -.
. "CHARACTERIZATION OF HIGH-SILICA MORDENITE OBTAINED BY DIRECT SYNTHESIS". , 9, 2, 1377, -.
. (1377). 'CHARACTERIZATION OF HIGH-SILICA MORDENITE OBTAINED BY DIRECT SYNTHESIS', , 9(2), pp. -.
. CHARACTERIZATION OF HIGH-SILICA MORDENITE OBTAINED BY DIRECT SYNTHESIS. , 1377; 9(2): -.

CHARACTERIZATION OF HIGH-SILICA MORDENITE OBTAINED BY DIRECT SYNTHESIS

Journal of Sciences, Islamic Republic of Iran
مقاله 6، دوره 9، شماره 2، شهریور 1998    اصل مقاله (695.92 K)
چکیده
Three high-silica mordenite zeolites differing in SiO440, ratio were prepared by
direct synthesis without using any template. The products Si02/A120, ratio is
influenced by the starting gel composition. This ratio is increased upon ion-exchange
with NH,Cl and subsequent calcination to prepare protonic mordenite. The protonic
mordenites with Si02/A1203ra tios of 14.6,29.2 and 34.6 were characterized by X-ray
diffraction, energy dispersive X-ray microprobe analysis, scanning electron microscopy
and thermogravimetric analysis. Catalytic cracking of n-hexane was studied as a
measure of catalytic activity of protonic mordenites. Catalytic activities are expressed
as conversion percent of n-hexane. Catalysts with higher Si02/A1,03 were found to
be more active
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