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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.50A [2011] >
IJC-A Vol.50A(02) [February 2011] >
| Title: | Synthesis, characterization and catalytic activity of SnAPO-5 in hydrogenation reaction |
| Authors: | Sasidharan, Manickam
Bhaumik, Asim |
| Keywords: | Catalysis
Aluminophosphates
Tin
Molecular sieves
Metallophosphates
Hydrogenation
Cyclohexanone |
| Issue Date: | Feb-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Tin containing
aluminophosphate molecular sieve with AFI structure (SnAPO-5) has been synthesized
hydrothermally by using Sn(II) and Sn(IV) salts as precursors. The SnAPO-5
materials have been thoroughly characterized by powder X-ray diffraction, FTIR,
UV-vis spectroscopy, scanning electron microscopy, thermal analysis, N2
sorption and surface area measurements, and elemental analysis using ICP. FTIR
and UV-vis spectral data of calcined SnAPO-5 reveal that Sn can be substituted
for the phosphorous sites up to 2 mole% in the framework lattices. Substitution
of Sn preferably occurs at the phosphorous sites rather than for Al at lower
metal concentration [Sn(II) or Sn(IV) ≤ 2 mole% SnO2] but higher
loading leads to octahedral tin species. The calcined SnAPO-5 material exhibits
good hydrogenation activity for the reduction of cyclohexanone to cyclohexanol
using 2-butanol as hydrogen donor molecule under the liquid-phase reaction
conditions. Other metallophosphates such as CoAPO-5, MnAPO-5 and FeAPO-5 fail
to undergo this hydrogenation reaction under similar experimental conditions. |
| Page(s): | 149-155 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.50A(02) [February 2011]
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