Synthesis of silicalite-1 in bicontinuous microemulsion containing AOT

Manna, Abhijit ; Kulkarni, B. D. ; Ahedi, Ranjeet Kaur ; Bhaumik, Asim ; Kotasthane, A. N. (1999) Synthesis of silicalite-1 in bicontinuous microemulsion containing AOT Journal of Colloid and Interface Science, 213 (2). pp. 405-411. ISSN 0021-9797

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Silicalite-1 has been hydrothermally synthesized in a bicontinuous microemulsion of tetraethylenepentamine-sodium bis(2-ethylhexly) sulfosuccinate (AOT)-water system containing fluoride ions. The presence of AOT (an anionic surfactant) has been found to be essential for the formation of Silicalite-1 in bulk tetraethylene pentamine solvent. The tetrahedral binding sites of silicon atom have been confirmed by29Si magic angle spinning NMR and FT-IR spectra. Thermogravimetric and differential thermal analysis studies on as-synthesized Silicalite-1 and X-ray diffraction pattern for calcined product established their structural stability. The scanning electron micrographs show the twinned and uniform morphology of crystals. The presence of additive (AOT) lengthens the nucleation period and helps to produce a large size crystal of Silicalite-1.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Hydrothermally; Bicontinuous Microemulsion; Surfactant; Twinned Morphology; Nucleation Period
ID Code:17325
Deposited On:16 Nov 2010 07:58
Last Modified:06 Jun 2011 09:25

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