Catalytic conversion of glucose in fructose utilizing high-silica zeolite Sn-ZSM-12
| Autor: | I. da Silva, A. O. S. Silva, J. R. Santos, R. C. S. Nascimento, J. M. Ferreira, A. D. Rodrigues |
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| Jazyk: | English<br />Portuguese |
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| Zdroj: | Cerâmica |
| Druh dokumentu: | article |
| ISSN: | 1678-4553 0366-6913 |
| DOI: | 10.1590/0366-69132020663792867 |
| Popis: | Abstract Tin incorporation in high-silica ZSM-12 zeolite was evaluated using different concentrations of tin and different structure-directing agents (SDA), in order to be used in the glucose isomerization reaction in fructose. The tetraethylammonium hydroxide SDA successfully formed the structure of the high silica zeolite ZSM-12; however, in this system, the addition of Sn prevented the formation of the ZSM-12 zeolite. Therefore, tetraethylammonium bromide was used as SDA, but the syntheses of high-silica ZSM-12 zeolite without and with tin incorporation were not effective. Then methyltriethylammonium chloride was used as SDA, and the high-silica ZSM-12 structure was formed only with the incorporation of tin. The samples with ZSM-12 structure and different concentrations of tin were evaluated in reaction of glucose conversion to fructose. It was found that the sample with the lowest tin content ( Sn / Si = 0 . 005 ) achieved the highest glucose conversion and the highest fructose yield. |
| Databáze: | Directory of Open Access Journals |
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