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022 _a09743626
040 _aMSU
_bEnglish
_cMSU
_erda
050 0 0 _aQD31 JOU
100 1 _aSrinivas, M.
_eco author
245 1 0 _aUnderstanding the surface and structural characteristics of tungsten oxide supported on tin oxide catalysts for the conversion of glycerol /
_ccreated by M. Srinivas, G. Raveendra, G. Parameswaram, P. S. Sai Prasad, S. Loridant and N. Lingaiah
264 1 _aBangalore :
_bSpringer,
_c2015.
336 _2rdacontent
_atext
_btxt
337 _2rdamedia
_aunmediated
_bn
338 _2rdacarrier
_avolume
_bnc
440 _aJournal of chemical sciences
_vVolume 127, number 5,
520 3 _aCatalysts with varying WO3 content on SnO2 were prepared and characterized by X-ray diffraction, in situ Raman spectroscopy, X-ray photoelectron spectroscopy and temperature programmed desorption of NH3. In situ Raman analysis reveals the presence isolated monomers and polymeric species of WO3. These catalysts were evaluated for the conversion of glycerol into value added chemicals. Etherification of glycerol with tertiary butanol and preparation of glycerol carbonate from glycerol and urea are studied over these catalysts. The catalytic activity results suggest that the glycerol conversion and selectivity depends on the morphology of WO3 which in turn is related to its content in the catalyst. The catalysts with 5 wt.% of WO3 on SnO2 resulted in high dispersion with larger number of strong acidic sites. The selectivity in the glycerol etherification is related to the nature of the catalyst and reaction time. These catalysts also exhibited high activity for synthesis of glycerol carbonate. The effect of various reaction parameters was studied to optimize the reaction conditions. The catalysts also exhibited consistent activity upon reuse.
650 _aTungsten oxide
_vTin oxide
_xEtherification
700 1 _aRaveendra, G.
_eco author
700 1 _aParameswaram, G.
_eco author
700 1 _aPrasad, P. S. Sai
_eco author
700 1 _aLoridant, S.
_eco author
700 1 _aLingaiah, N.
_eco author
856 _uhttps://doi.org/10.1007/s12039-015-0848-4
942 _2lcc
_cJA
999 _c169332
_d169332