Catalytic hydrogenation of levulinic acid in aqueous phase

Clara Delhomme, Lars Arne Schaper, Mei Zhang-Preße, Gabriele Raudaschl-Sieber, Dirk Weuster-Botz, Fritz E. Kühn

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Abstract

The hydrogenation of levulinic acid (LA) yielding γ-valerolactone (GVL) has been examined in aqueous solution using various water soluble phosphine ligands in combination with the metal precursors [Ru(acac) 3] and [RuCl3]. Using catalyst loadings of only 0.2 mol%, GVL could be obtained in yields up to 99% conversion and 97% selectivity along with a maximum turnover frequency of 200molGVLmolRu- 1h-1 within 5 h, using 3,3′,3′′- phosphinidynetris(benzenesulfonic acid) trisodium salt (TPPTS) and Ru(acac) 3 as catalytic system. In addition, a ruthenium-phosphine complex immobilized on the amphiphilic copolymer PS-PEG was examined under the same conditions and gave 90% conversion of LA in 24 h.

Original languageEnglish
Pages (from-to)297-299
Number of pages3
JournalJournal of Organometallic Chemistry
Volume724
DOIs
StatePublished - 15 Jan 2013

Keywords

  • Aqueous hydrogenation
  • Levulinic acid
  • Polymer immobilized complex
  • Water-soluble phosphines

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