Synthesis of ZSM-5 Using a TBP Template and an Oligomeric Silicic Ester
The syntheses of pentasil zeolites were carried out using the system xNa2O·y(TBP)2O·Al2O3·zSiO2·1050H2O, keeping z = 50—600, y/z = 0.03 to 0.1, and x/z = 0.01 to 0.05 at 448 K. Pure ZSM-5 phase is found to form for any value of z in the range specified when y/z = 0.02 and x/z = 0.01. When these comp...
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| Veröffentlicht in: | Bulletin of the Chemical Society of Japan 1996-04, Vol.69 (4), p.1125-1128 |
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| container_title | Bulletin of the Chemical Society of Japan |
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| creator | Lingappan, Nachiappan Krishnasamy, V |
| description | The syntheses of pentasil zeolites were carried out using the system xNa2O·y(TBP)2O·Al2O3·zSiO2·1050H2O, keeping z = 50—600, y/z = 0.03 to 0.1, and x/z = 0.01 to 0.05 at 448 K. Pure ZSM-5 phase is found to form for any value of z in the range specified when y/z = 0.02 and x/z = 0.01. When these compositional ranges and ratios are altered either ZSM-11 or intergrowth of ZSM-5/11 or formation of ZSM-5 or ZSM-11 and quartz takes place. The decomposition of the templates, from the channels of ZSM-5 of different SiO2/Al2O3 ratio, showed differences in their patterns. After calcination of the samples phosphorus is retained in the zeolite channels in the form of a surface complex. Thermal analysis and FTIR studies support this observation. SEM pictures drive to the conclusion that a liquid–solid transformation mechanism operates in the crystallization of ZSM-5 under the conditions of the synthesis studied. |
| doi_str_mv | 10.1246/bcsj.69.1125 |
| format | Article |
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Pure ZSM-5 phase is found to form for any value of z in the range specified when y/z = 0.02 and x/z = 0.01. When these compositional ranges and ratios are altered either ZSM-11 or intergrowth of ZSM-5/11 or formation of ZSM-5 or ZSM-11 and quartz takes place. The decomposition of the templates, from the channels of ZSM-5 of different SiO2/Al2O3 ratio, showed differences in their patterns. After calcination of the samples phosphorus is retained in the zeolite channels in the form of a surface complex. Thermal analysis and FTIR studies support this observation. SEM pictures drive to the conclusion that a liquid–solid transformation mechanism operates in the crystallization of ZSM-5 under the conditions of the synthesis studied.</description><identifier>ISSN: 0009-2673</identifier><identifier>EISSN: 1348-0634</identifier><identifier>DOI: 10.1246/bcsj.69.1125</identifier><language>eng</language><publisher>Tokyo: The Chemical Society of Japan</publisher><ispartof>Bulletin of the Chemical Society of Japan, 1996-04, Vol.69 (4), p.1125-1128</ispartof><rights>The Chemical Society of Japan</rights><rights>Copyright Japan Science and Technology Agency 1996</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c450t-1d85c18e042973d0f674420ddb2d00d7a527bf8c557fac5ef62c59809a6551cd3</citedby><cites>FETCH-LOGICAL-c450t-1d85c18e042973d0f674420ddb2d00d7a527bf8c557fac5ef62c59809a6551cd3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27915,27916</link.rule.ids></links><search><creatorcontrib>Lingappan, Nachiappan</creatorcontrib><creatorcontrib>Krishnasamy, V</creatorcontrib><title>Synthesis of ZSM-5 Using a TBP Template and an Oligomeric Silicic Ester</title><title>Bulletin of the Chemical Society of Japan</title><addtitle>Bulletin of the Chemical Society of Japan</addtitle><description>The syntheses of pentasil zeolites were carried out using the system xNa2O·y(TBP)2O·Al2O3·zSiO2·1050H2O, keeping z = 50—600, y/z = 0.03 to 0.1, and x/z = 0.01 to 0.05 at 448 K. Pure ZSM-5 phase is found to form for any value of z in the range specified when y/z = 0.02 and x/z = 0.01. When these compositional ranges and ratios are altered either ZSM-11 or intergrowth of ZSM-5/11 or formation of ZSM-5 or ZSM-11 and quartz takes place. The decomposition of the templates, from the channels of ZSM-5 of different SiO2/Al2O3 ratio, showed differences in their patterns. After calcination of the samples phosphorus is retained in the zeolite channels in the form of a surface complex. Thermal analysis and FTIR studies support this observation. 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| ispartof | Bulletin of the Chemical Society of Japan, 1996-04, Vol.69 (4), p.1125-1128 |
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| language | eng |
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| source | Oxford University Press Journals All Titles (1996-Current) |
| title | Synthesis of ZSM-5 Using a TBP Template and an Oligomeric Silicic Ester |
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