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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.48 [2010] >
IJPAP Vol.48(09) [September 2010] >
| Title: | FTIR study of modification of transition metal on zeolites for adsorption |
| Authors: | Bardakçi, Belgin
Bahçeli, Semiha |
| Keywords: | Zeolite
1-propanethiol
Cation-exchange
Adsorption
FTIR spectroscopy |
| Issue Date: | Sep-2010 |
| Publisher: | CSIR |
| Abstract: | Adsorption
of 1-propanethiol on Co2+ and Cd2+ modified, synthetic
(3A, 4A and 13X) zeolites were studied by FTIR (Fourier Transform Infrared)
spectroscopy and SEM-EDX (Scanning Electron Microscope-Energy Dispersive X-Ray)
graphics. Amount of metal cations on mentioned zeolites was measured by AAS
(Atomic Absorption Spectrometer). Based on divalent cations of zeolites, it was
assumed that cations may affect their adsorption properties. The nature of the
cations present in a given type zeolite markedly affects the physical and
chemical feature of the system, for instance, valance and size of cations and
their location in the zeolite framework influence adsorption, molecular sieving
and catalytic properties. In this study, we used cation exchanged zeolites as
adsorbents due to their high surface area. Zeolites with divalent cations show
an affinity to adsorp 1-propanethiol comparing to their ordinary positions with
monovalent cations. The lack of S-H band in IR spectra gives an idea, that sulphur may make
a bond to metal (Cd2+ or Co2+) or it makes a bond to H atom of
isolated OH groups of zeolite surface. |
| Page(s): | 615-620 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.48(09) [September 2010]
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