CHARACTERIZATION OF HIGH-SILICA MORDENITE OBTAINED BY DIRECT SYNTHESIS
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 proton...
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| Format: | Article |
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| Language: | English |
| Published: |
University of Tehran
1998-06-01
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| Series: | Journal of Sciences, Islamic Republic of Iran |
| Online Access: | https://jsciences.ut.ac.ir/article_31468_b52852e42743d9b7f886653d167fdaeb.pdf |
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| collection | DOAJ |
| description | 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 |
| format | Article |
| id | doaj-art-55e93ef7fe4c4b998e739cbde3c3b53e |
| institution | Kabale University |
| issn | 1016-1104 2345-6914 |
| language | English |
| publishDate | 1998-06-01 |
| publisher | University of Tehran |
| record_format | Article |
| series | Journal of Sciences, Islamic Republic of Iran |
| spelling | doaj-art-55e93ef7fe4c4b998e739cbde3c3b53e2025-08-20T03:53:51ZengUniversity of TehranJournal of Sciences, Islamic Republic of Iran1016-11042345-69141998-06-019231468CHARACTERIZATION OF HIGH-SILICA MORDENITE OBTAINED BY DIRECT SYNTHESISThree 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 activehttps://jsciences.ut.ac.ir/article_31468_b52852e42743d9b7f886653d167fdaeb.pdf |
| spellingShingle | CHARACTERIZATION OF HIGH-SILICA
MORDENITE OBTAINED BY DIRECT
SYNTHESIS Journal of Sciences, Islamic Republic of Iran |
| title | CHARACTERIZATION OF HIGH-SILICA
MORDENITE OBTAINED BY DIRECT
SYNTHESIS |
| title_full | CHARACTERIZATION OF HIGH-SILICA
MORDENITE OBTAINED BY DIRECT
SYNTHESIS |
| title_fullStr | CHARACTERIZATION OF HIGH-SILICA
MORDENITE OBTAINED BY DIRECT
SYNTHESIS |
| title_full_unstemmed | CHARACTERIZATION OF HIGH-SILICA
MORDENITE OBTAINED BY DIRECT
SYNTHESIS |
| title_short | CHARACTERIZATION OF HIGH-SILICA
MORDENITE OBTAINED BY DIRECT
SYNTHESIS |
| title_sort | characterization of high silica mordenite obtained by direct synthesis |
| url | https://jsciences.ut.ac.ir/article_31468_b52852e42743d9b7f886653d167fdaeb.pdf |