Promoter effects in the Pt-catalysed oxidation of propylene glycol

H.H.C.M. Pinxt, B.F.M. Kuster, G.B.M.M. Marin

Research output: Contribution to journalArticleAcademicpeer-review

49 Citations (Scopus)

Abstract

Oxidation of aqueous solutions of propylene glycol has been performed at 333 K, pH = 8 using Pb-, Bi- and Sn-promoted Pt/graphite catalysts. Oxidation of propylene glycol towards pyruvic acid proceeds via two pathways, one via hydroxyacetone, the second via lactic acid. Experiments, performed under oxygen mass transfer limitations to avoid de-activation by over-oxidation showed significant effects of the promoters on both activity and selectivity. The addition of Pb and Bi enhances oxidation of lactic acid resulting in higher yields of pyruvic acid. The addition of Sn leads to high selectivities for both hydroxyacetone and pyruvic acid. The effect of Sn can be explained by the formation of a Sn–diol complex, where Sn is in the Sn(IV) state.
Original languageEnglish
Pages (from-to)45-54
Number of pages9
JournalApplied Catalysis. A, General
Volume191
Issue number1-2
DOIs
Publication statusPublished - 2000

Fingerprint

Propylene Glycol
Glycols
Propylene
Pyruvic Acid
Oxidation
Lactic acid
Acids
Lactic Acid
Graphite
Mass transfer
Chemical activation
Oxygen
Catalysts
Experiments
acetol

Cite this

Pinxt, H.H.C.M. ; Kuster, B.F.M. ; Marin, G.B.M.M. / Promoter effects in the Pt-catalysed oxidation of propylene glycol. In: Applied Catalysis. A, General. 2000 ; Vol. 191, No. 1-2. pp. 45-54.
@article{4cf1dc71232149aaa7f930c905c283db,
title = "Promoter effects in the Pt-catalysed oxidation of propylene glycol",
abstract = "Oxidation of aqueous solutions of propylene glycol has been performed at 333 K, pH = 8 using Pb-, Bi- and Sn-promoted Pt/graphite catalysts. Oxidation of propylene glycol towards pyruvic acid proceeds via two pathways, one via hydroxyacetone, the second via lactic acid. Experiments, performed under oxygen mass transfer limitations to avoid de-activation by over-oxidation showed significant effects of the promoters on both activity and selectivity. The addition of Pb and Bi enhances oxidation of lactic acid resulting in higher yields of pyruvic acid. The addition of Sn leads to high selectivities for both hydroxyacetone and pyruvic acid. The effect of Sn can be explained by the formation of a Sn–diol complex, where Sn is in the Sn(IV) state.",
author = "H.H.C.M. Pinxt and B.F.M. Kuster and G.B.M.M. Marin",
year = "2000",
doi = "10.1016/S0926-860X(99)00304-X",
language = "English",
volume = "191",
pages = "45--54",
journal = "Applied Catalysis. A, General",
issn = "0926-860X",
publisher = "Elsevier",
number = "1-2",

}

Promoter effects in the Pt-catalysed oxidation of propylene glycol. / Pinxt, H.H.C.M.; Kuster, B.F.M.; Marin, G.B.M.M.

In: Applied Catalysis. A, General, Vol. 191, No. 1-2, 2000, p. 45-54.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Promoter effects in the Pt-catalysed oxidation of propylene glycol

AU - Pinxt, H.H.C.M.

AU - Kuster, B.F.M.

AU - Marin, G.B.M.M.

PY - 2000

Y1 - 2000

N2 - Oxidation of aqueous solutions of propylene glycol has been performed at 333 K, pH = 8 using Pb-, Bi- and Sn-promoted Pt/graphite catalysts. Oxidation of propylene glycol towards pyruvic acid proceeds via two pathways, one via hydroxyacetone, the second via lactic acid. Experiments, performed under oxygen mass transfer limitations to avoid de-activation by over-oxidation showed significant effects of the promoters on both activity and selectivity. The addition of Pb and Bi enhances oxidation of lactic acid resulting in higher yields of pyruvic acid. The addition of Sn leads to high selectivities for both hydroxyacetone and pyruvic acid. The effect of Sn can be explained by the formation of a Sn–diol complex, where Sn is in the Sn(IV) state.

AB - Oxidation of aqueous solutions of propylene glycol has been performed at 333 K, pH = 8 using Pb-, Bi- and Sn-promoted Pt/graphite catalysts. Oxidation of propylene glycol towards pyruvic acid proceeds via two pathways, one via hydroxyacetone, the second via lactic acid. Experiments, performed under oxygen mass transfer limitations to avoid de-activation by over-oxidation showed significant effects of the promoters on both activity and selectivity. The addition of Pb and Bi enhances oxidation of lactic acid resulting in higher yields of pyruvic acid. The addition of Sn leads to high selectivities for both hydroxyacetone and pyruvic acid. The effect of Sn can be explained by the formation of a Sn–diol complex, where Sn is in the Sn(IV) state.

U2 - 10.1016/S0926-860X(99)00304-X

DO - 10.1016/S0926-860X(99)00304-X

M3 - Article

VL - 191

SP - 45

EP - 54

JO - Applied Catalysis. A, General

JF - Applied Catalysis. A, General

SN - 0926-860X

IS - 1-2

ER -