TY - JOUR
T1 - Catalytic hydrogenation of levulinic acid in aqueous phase
AU - Delhomme, Clara
AU - Schaper, Lars Arne
AU - Zhang-Preße, Mei
AU - Raudaschl-Sieber, Gabriele
AU - Weuster-Botz, Dirk
AU - Kühn, Fritz E.
N1 - Funding Information:
C.D. is grateful to IGSSE (project 2.07) for a PhD grant and L.A.S. is grateful to TUM Graduate School and the Bavarian Elite Network NanoCat for financial support.
PY - 2013/1/15
Y1 - 2013/1/15
N2 - 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.
AB - 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.
KW - Aqueous hydrogenation
KW - Levulinic acid
KW - Polymer immobilized complex
KW - Water-soluble phosphines
UR - http://www.scopus.com/inward/record.url?scp=84872898248&partnerID=8YFLogxK
U2 - 10.1016/j.jorganchem.2012.10.030
DO - 10.1016/j.jorganchem.2012.10.030
M3 - Article
AN - SCOPUS:84872898248
SN - 0022-328X
VL - 724
SP - 297
EP - 299
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
ER -