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Preparation of ZSM-5/MCM-41 composite using naturally occurring diatomite.
- Source :
- Materials Research Innovations; Sep2016, Vol. 20 Issue 6, p465-469, 5p
- Publication Year :
- 2016
-
Abstract
- ZSM-5/MCM-41 composites with tailored properties have been receiving great attention nowadays; however, their low-cost preparation process remains a challenge. The present study offered a low-cost synthesis of ZSM-5/MCM-41 composite using diatomite as silica source by monitoring the re-crystallisation time in a two-step crystallisation process. The obtained samples were characterised by X-ray powder diffraction, Fourier transform infrared spectroscopy, nitrogen adsorption–desorption measurements, scanning electron microscopy and transmission electron microscopy. It was shown that the resulting ZSM-5/MCM-41 composite possessed a well-ordered mesoporous MCM-41 phase and ZSM-5 microporous phase. The composite was also compared with the mechanical mixture of ZSM-5 and MCM-41 and the results showed that the structure of both materials was different. In addition, the effect of re-crystallisation time on the synthesis of ZSM-5/MCM-41 composite was also investigated in detail. The experimental results indicated that the re-crystallisation time was a key factor for the formation of the composite. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14328917
- Volume :
- 20
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Materials Research Innovations
- Publication Type :
- Academic Journal
- Accession number :
- 118890008
- Full Text :
- https://doi.org/10.1179/1433075X15Y.0000000057