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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.51A [2012] >
IJC-A Vol.51A(08) [August 2012] >
| Title: | Synthesis of Ti–β zeolite membrane over porous α–alumina tubular support |
| Authors: | Sasidharan, Manickam
Bhaumik, Asim |
| Keywords: | Metallosilicates
Titanosilicates membranes
Zeolite membranes
Microporous membranes
Hydrothermal synthesis
Pore structures
Gas permeation
Alumina tubes |
| Issue Date: | Aug-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Three-dimensional large-pore titanosilicate analogue of zeolite Beta
membrane has been synthesized for the first time through hydrothermal method
over porous α-alumina tubular support. Crack-free continuous intergrown
membranes are obtained after four repeated syntheses over the same alumina
support but with different synthesis gels. The thickness of the calcined
Ti–β membrane is found to be ≈9 ± 2 μm. The calcined composite membranes have
been characterized by powder X-ray diffraction (XRD), scanning electron
microscopy, energy dispersive X-ray analysis, UV-visible diffuse reflectance
spectroscopy and elemental analysis by inductively coupled plasma studies. The
XRD patterns of composite membrane and powder sample collected from the reactor
suggest the formation of pure crystalline titanium Beta phase. The UV-visible
spectrum confirms the presence of titanium predominantly in the tetrahedral
position. The gas permeability of the membranes at room temperature at
different inlet pressure is of the order of 10–8. Prior to
calcination, the composite membranes do not show any gas permeability
indicating high compactness of the synthesized membrane.
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| Page(s): | 1080-1084 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.51A(08) [August 2012]
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