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http://nopr.niscpr.res.in/handle/123456789/30805| Title: | Synthesis and characterisation of silicious mordenite |
| Authors: | Choudhury, Mina Borthakur, P C Bora, T |
| Issue Date: | Jan-1998 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Mordenite, a zeolite, is widely used as adsorbent, catalyst, catalyst support and ion exchanger. The thermal stability and acid resistant characteristics of the zeolite are found to increase with increase of the silica alumina ratio (SAR). Direct synthesis of silicious mordenite using sodium polysilicate, aluminium sulphate and sodium hydroxide without involving templating agent and ageing and their characteristics are presented in this communication. Mordenite having SAR in the range of 11.65-16.07 crystallizes within 6-14 h in the temperature range of 165-185°C. The SAR of the mordenite increases with increase of this ratio and decrease of the Na2O:SiO2 ratio in the starting composition. Amorphous material and wairakite are formed when Na2O:SiO2 ratio is in the range of 1.96-1.45. Prolonging the reaction time beyond complete crystallization leads to mordenite degradation and formation of amorphous material. The mordenite formed have been characterized by chemical analysis, optical microscopy, particle size analysis, XRD, IR, NMR and thermal analysis. |
| Page(s): | 1-6 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Appears in Collections: | IJCT Vol.05(1) [January 1998] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCT 5(1) 1-6.pdf | 905.57 kB | Adobe PDF | View/Open |
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