Catalytic Conversion of Dihydroxyacetone to Lactic Acid Using Metal Salts in Water

We herein present a study on the application of homogeneous catalysts in the form of metal salts on the conversion of trioses, such as dihydroxyacetone (DHA), and glyceraldehyde (GLY) to lactic acid (LA) in water. A wide range of metal salts (26 in total) were examined. AlIII salts were identified a...

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Vydáno v:ChemSusChem Ročník 4; číslo 6; s. 768 - 777
Hlavní autoři: Rasrendra, Carolus B., Fachri, Boy A., Makertihartha, I. Gusti B. N., Adisasmito, Sanggono, Heeres, Hero J.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Weinheim WILEY-VCH Verlag 20.06.2011
WILEY‐VCH Verlag
Témata:
Catalysis
Dihydroxyacetone - chemistry
Dihydroxyacetone - metabolism
Hot Temperature
Kinetics
lactic acid
Lactic Acid - biosynthesis
Lactic Acid - chemistry
Metals - chemistry
renewable resources
Salts - chemistry
Solutions - chemistry
sustainable chemistry
trioses
Water - chemistry
ISSN:1864-5631, 1864-564X, 1864-564X
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Shrnutí:We herein present a study on the application of homogeneous catalysts in the form of metal salts on the conversion of trioses, such as dihydroxyacetone (DHA), and glyceraldehyde (GLY) to lactic acid (LA) in water. A wide range of metal salts (26 in total) were examined. AlIII salts were identified as the most promising and essentially quantitative LA yields (>90 mol %) were obtained at 140 °C and a reaction time of 90 min. A reaction pathway is proposed and a kinetic model using the power law approach was developed for the conversion of DHA to LA with pyruvaldehyde (PRV) as the intermediate. Good agreement between experimental data and the model was obtained. Model predictions, supported by experiments, indicate that a high yield of LA is favoured in dilute solutions of DHA (0.1 M) at elevated temperatures (180 °C) and reaction times less than 10 min. Just add salt: The potential application of metal salts as catalysts for the conversion of trioses (dihydroxyacetone and glyceraldehyde) into lactic acid in water has been explored (see scheme). Aluminium and chromium were identified as the most promising cations and lactic acid yields of up to 93 mol % were obtained under mild reaction conditions (120–180 °C).
Bibliografie:istex:577A00B3AE5F26C7D5F5FA8C27E2239A89F9A1DB
University of Groningen
ark:/67375/WNG-JMSCMQ3G-B
ArticleID:CSSC201000457
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1864-5631
1864-564X
1864-564X
DOI:10.1002/cssc.201000457