Formation of 2,3-Pentanedione from Lactic Acid over Supported Phosphate Catalysts

Research output: Contribution to journalArticle

  • 61 Citations

Abstract

Lactic acid is converted to 2,3-pentanedione, acrylic acid, and acetaldehyde in vapor-phase reactions at 0.5 MPa over phosphate salts. Highest selectivities to 2,3-pentanedione are achieved at 280-300°C and long (2-4 sec) residence times, while selectivity to acrylic acid is best at 350°C and short residence times (0.4 sec). 2,3-Pentanedione is proposed to form by a second-order condensation in the presence of phosphate, while acrylic acid is proposed to result from elimination of water via a cyclic lactic acid-phosphate transition state.

LanguageEnglish (US)
Pages252-260
Number of pages9
JournalJournal of Catalysis
Volume148
Issue number1
DOIs
StatePublished - Jul 1994

Profile

lactic acid
acrylic acid
Lactic acid
Acrylics
Lactic Acid
phosphates
Phosphates
catalysts
Catalysts
Acids
selectivity
Acetaldehyde
acetaldehyde
elimination
Condensation
condensation
Salts
Vapors
vapor phases
salts

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Catalysis

Cite this

Formation of 2,3-Pentanedione from Lactic Acid over Supported Phosphate Catalysts. / Gunter, G. C.; Miller, D. J.; Jackson, J. E.

In: Journal of Catalysis, Vol. 148, No. 1, 07.1994, p. 252-260.

Research output: Contribution to journalArticle

@article{de6915ee49fb41f3aeb0b909b94bdc40,
title = "Formation of 2,3-Pentanedione from Lactic Acid over Supported Phosphate Catalysts",
abstract = "Lactic acid is converted to 2,3-pentanedione, acrylic acid, and acetaldehyde in vapor-phase reactions at 0.5 MPa over phosphate salts. Highest selectivities to 2,3-pentanedione are achieved at 280-300°C and long (2-4 sec) residence times, while selectivity to acrylic acid is best at 350°C and short residence times (0.4 sec). 2,3-Pentanedione is proposed to form by a second-order condensation in the presence of phosphate, while acrylic acid is proposed to result from elimination of water via a cyclic lactic acid-phosphate transition state.",
author = "Gunter, {G. C.} and Miller, {D. J.} and Jackson, {J. E.}",
year = "1994",
month = "7",
doi = "10.1006/jcat.1994.1206",
language = "English (US)",
volume = "148",
pages = "252--260",
journal = "Journal of Catalysis",
issn = "0021-9517",
publisher = "Academic Press Inc.",
number = "1",

}

TY - JOUR

T1 - Formation of 2,3-Pentanedione from Lactic Acid over Supported Phosphate Catalysts

AU - Gunter,G. C.

AU - Miller,D. J.

AU - Jackson,J. E.

PY - 1994/7

Y1 - 1994/7

N2 - Lactic acid is converted to 2,3-pentanedione, acrylic acid, and acetaldehyde in vapor-phase reactions at 0.5 MPa over phosphate salts. Highest selectivities to 2,3-pentanedione are achieved at 280-300°C and long (2-4 sec) residence times, while selectivity to acrylic acid is best at 350°C and short residence times (0.4 sec). 2,3-Pentanedione is proposed to form by a second-order condensation in the presence of phosphate, while acrylic acid is proposed to result from elimination of water via a cyclic lactic acid-phosphate transition state.

AB - Lactic acid is converted to 2,3-pentanedione, acrylic acid, and acetaldehyde in vapor-phase reactions at 0.5 MPa over phosphate salts. Highest selectivities to 2,3-pentanedione are achieved at 280-300°C and long (2-4 sec) residence times, while selectivity to acrylic acid is best at 350°C and short residence times (0.4 sec). 2,3-Pentanedione is proposed to form by a second-order condensation in the presence of phosphate, while acrylic acid is proposed to result from elimination of water via a cyclic lactic acid-phosphate transition state.

UR - http://www.scopus.com/inward/record.url?scp=0000016363&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000016363&partnerID=8YFLogxK

U2 - 10.1006/jcat.1994.1206

DO - 10.1006/jcat.1994.1206

M3 - Article

VL - 148

SP - 252

EP - 260

JO - Journal of Catalysis

T2 - Journal of Catalysis

JF - Journal of Catalysis

SN - 0021-9517

IS - 1

ER -