Partial photocatalytic oxidation of glycerol in TiO2 water suspensions

V. Augugliaro; H. A.Hamed El Nazer; V. Loddo; A. Mele; G. Palmisano; L. Palmisano; S. Yurdakal

doi:10.1016/j.cattod.2010.01.022

Partial photocatalytic oxidation of glycerol in TiO₂ water suspensions

V. Augugliaro, H. A.Hamed El Nazer, V. Loddo, A. Mele, G. Palmisano, L. Palmisano, S. Yurdakal

Chemical and Petroleum Engineering

Research output: Contribution to journal › Article › peer-review

104 Scopus citations

Abstract

The photo-oxidation of glycerol in aqueous suspensions containing commercial and home-prepared TiO₂ samples in the anatase, rutile or anatase-rutile polymorphic phases was investigated by using two different batch photoreactors, an annular photoreactor and a cylindrical photoreactor. The glycerol oxidation products detected in the aqueous phase were: 1,3-dihydroxyacetone, glyceraldehyde, formic acid and carbon dioxide. Two unknown compounds were also detected by electrospray ionization mass spectrometry as peaks at m/z 268 and m/z 176. A plausible mechanism for their formation was suggested based on ESI-MS and MSⁿ experiments. The results indicate that in both systems the commercial samples showed the best performances both for reaction rate and selectivity toward 1,3-dihydroxyacetone, glyceraldehyde, formic acid and CO₂.

Original language	British English
Pages (from-to)	21-28
Number of pages	8
Journal	Catalysis Today
Volume	151
Issue number	1-2
DOIs	https://doi.org/10.1016/j.cattod.2010.01.022
State	Published - 15 Apr 2010

Keywords

Glycerol partial oxidation
Reaction pathways
Selective photocatalytic oxidation
Titanium dioxide

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10.1016/j.cattod.2010.01.022

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title = "Partial photocatalytic oxidation of glycerol in TiO2 water suspensions",

abstract = "The photo-oxidation of glycerol in aqueous suspensions containing commercial and home-prepared TiO2 samples in the anatase, rutile or anatase-rutile polymorphic phases was investigated by using two different batch photoreactors, an annular photoreactor and a cylindrical photoreactor. The glycerol oxidation products detected in the aqueous phase were: 1,3-dihydroxyacetone, glyceraldehyde, formic acid and carbon dioxide. Two unknown compounds were also detected by electrospray ionization mass spectrometry as peaks at m/z 268 and m/z 176. A plausible mechanism for their formation was suggested based on ESI-MS and MSn experiments. The results indicate that in both systems the commercial samples showed the best performances both for reaction rate and selectivity toward 1,3-dihydroxyacetone, glyceraldehyde, formic acid and CO2.",

keywords = "Glycerol partial oxidation, Reaction pathways, Selective photocatalytic oxidation, Titanium dioxide",

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AU - Augugliaro, V.

AU - El Nazer, H. A.Hamed

AU - Loddo, V.

AU - Mele, A.

AU - Palmisano, G.

AU - Palmisano, L.

AU - Yurdakal, S.

PY - 2010/4/15

Y1 - 2010/4/15

N2 - The photo-oxidation of glycerol in aqueous suspensions containing commercial and home-prepared TiO2 samples in the anatase, rutile or anatase-rutile polymorphic phases was investigated by using two different batch photoreactors, an annular photoreactor and a cylindrical photoreactor. The glycerol oxidation products detected in the aqueous phase were: 1,3-dihydroxyacetone, glyceraldehyde, formic acid and carbon dioxide. Two unknown compounds were also detected by electrospray ionization mass spectrometry as peaks at m/z 268 and m/z 176. A plausible mechanism for their formation was suggested based on ESI-MS and MSn experiments. The results indicate that in both systems the commercial samples showed the best performances both for reaction rate and selectivity toward 1,3-dihydroxyacetone, glyceraldehyde, formic acid and CO2.

AB - The photo-oxidation of glycerol in aqueous suspensions containing commercial and home-prepared TiO2 samples in the anatase, rutile or anatase-rutile polymorphic phases was investigated by using two different batch photoreactors, an annular photoreactor and a cylindrical photoreactor. The glycerol oxidation products detected in the aqueous phase were: 1,3-dihydroxyacetone, glyceraldehyde, formic acid and carbon dioxide. Two unknown compounds were also detected by electrospray ionization mass spectrometry as peaks at m/z 268 and m/z 176. A plausible mechanism for their formation was suggested based on ESI-MS and MSn experiments. The results indicate that in both systems the commercial samples showed the best performances both for reaction rate and selectivity toward 1,3-dihydroxyacetone, glyceraldehyde, formic acid and CO2.

KW - Glycerol partial oxidation

KW - Reaction pathways

KW - Selective photocatalytic oxidation

KW - Titanium dioxide

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Partial photocatalytic oxidation of glycerol in TiO₂ water suspensions

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Keywords

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