| Titre : | Hydrothermal synthesis of titanium silicalite-1 structurally directed by hexamethyleneimine (2009) |
| Auteurs : | Haijiao Zhang, Auteur ; Yueming Liu, Auteur ; Zheng Jiao, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N° 9, Mai 2009) |
| Article en page(s) : | pp. 4334–4339 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Titanium silicalite-1 Hexamethyleneimine Active seeds |
| Résumé : | Titanium silicalite-1 (TS-1) with the MFI topology has been synthesized successfully in the absence of alkali metal ions with the cooperative effects of active seeds and the structure-directing agent hexamethyleneimine (HMI). The physicochemical properties and structures of the products were characterized by various techniques. The coexistence of HMI and primary and/or secondary building units of the MFI structure in the synthesitic gels was essential for the nucleation and crystallization of TS-1. The nature and preparation conditions of the seed precursors had a great influence on the crystallization process and the incorporation of titanium atoms into the framework. It was found that a synergistic effect between HMI and the precursor seeds led to the full crystallization of TS-1. Other synthesis parameters such as boron addition, silicon source, and crystallization time were also investigated. Moreover, the present synthesis system is also applicable to the preparation of other MFI analogues. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie8016253 |
