| Literature DB >> 26089180 |
Alberto Villa1, Marco Schiavoni1, Carine E Chan-Thaw1, Pasquale F Fulvio2,3, Richard T Mayes3, Sheng Dai2,4, Karren L More5, Gabriel M Veith5, Laura Prati6.
Abstract
The hydrogenation of levulinic acid has been studied using Ru supported on ordered mesoporous carbons (OMCs) prepared by soft-templating. P- and S-containing acid groups were introduced by postsynthetic functionalization before the addition of 1 % Ru by incipient wetness impregnation. These functionalities and the reaction conditions mediate the activity and selectivity of the levulinic acid hydrogenation. The presence of S-containing groups (Ru/OMC-S and Ru/OMC-P/S) deactivates the Ru catalysts strongly, whereas the presence of P-containing groups (Ru/OMC-P) enhances the activity compared to that of pristine Ru/OMC. Under mild conditions (70 °C and 7 bar H2 ) the catalyst shows high selectivity to γ-valerolactone (GVL; >95 %) and high stability on recycling. However, under more severe conditions (200 °C and p H 2=40 bar) Ru/OMC-P is particularly able to promote GVL ring-opening and the consecutive hydrogenation to pentanoic acid.Entities:
Keywords: carbon; hydrogenation; mesoporous materials; ruthenium; supported catalysts
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Year: 2015 PMID： 26089180 DOI： 10.1002/cssc.201500331
Source DB: PubMed Journal: ChemSusChem ISSN： 1864-5631 Impact factor: 8.928