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- Title
Synthesis of Bio-Based Methacrylic Acid by Decarboxylation of Itaconic Acid and Citric Acid Catalyzed by Solid Transition-Metal Catalysts.
- Authors
Le Nôtre, Jérôme; Witte‐van Dijk, Susan C. M.; van Haveren, Jacco; Scott, Elinor L.; Sanders, Johan P. M.
- Abstract
Methacrylic acid, an important monomer for the plastics industry, was obtained in high selectivity (up to 84%) by the decarboxylation of itaconic acid using heterogeneous catalysts based on Pd, Pt and Ru. The reaction takes place in water at 200-250°C without any external added pressure, conditions significantly milder than those described previously for the same conversion with better yield and selectivity. A comprehensive study of the reaction parameters has been performed, and the isolation of methacrylic acid was achieved in 50% yield. The decarboxylation procedure is also applicable to citric acid, a more widely available bio-based feedstock, and leads to the production of methacrylic acid in one pot in 41% selectivity. Aconitic acid, the intermediate compound in the pathway from citric acid to itaconic acid was also used successfully as a substrate.
- Subjects
METHACRYLIC acid; METHACRYLATES; DECARBOXYLATION; ITACONIC acid; DICARBOXYLIC acids; CATALYSTS
- Publication
ChemSusChem, 2014, Vol 7, Issue 9, p2712
- ISSN
1864-5631
- Publication type
Article
- DOI
10.1002/cssc.201402117