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Title: Vapour phase pinacol rearrangement over modified sulphated zirconia
Authors: Nagaraju, N
Shamshuddin, S Z Mohamed
Keywords: Sulphated zirconia
Fe(III) and Mn(II) modified sulphated zirconia
Pinacol rearrangement
Solvent effect
Issue Date: Jan-2007
Publisher: CSIR
IPC CodeB01J32/00, B01J31/33
Abstract: The catalysts, sulphated zirconia and Fe(III) and Mn(II) ions containing sulphated zirconia were prepared by wet impregnation method. These catalysts were characterized for BET surface area, total surface acidity, elemental analysis and powder XRD. The catalytic activity of these catalysts was evaluated in vapour phase pinacol-pinacolone rearrangement of 2,3-dimethyl-2,3-butanediol (pinacol). 2,3-dimethyl-2-butanone (pinacolone) and 2,3-dimethyl-1,4-butadiene were the two main products obtained. The effect of Fe(III), Mn(II) and their mixture on the physico-chemical characteristics and catalytic activity of sulphated zirconia was studied. The effect of nature of solvent on the extent of conversion of pinacol and selectivity towards the products (ketone or diene) was also studied. The activity of sulphated zirconia and its modified forms was compared with the activity of pure ZrO₂, Fe₂O₃ and MnO in the above mentioned reaction to evaluate the nature of effect of support and metal ions.
Page(s): 47-51
ISSN: 0971–457X
Source:IJCT Vol.14(1) [January 2007]

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