Journal
MOLECULAR CATALYSIS
Volume 475, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.mcat.2019.110478
Keywords
Metal-Organic frameworks (MOFs); Ru@C-Al(2)O(3)composites; Levulinic acid; Hydrogenation; gamma-valerolactone
Categories
Funding
- Ministry of Science and Technology (MOST), Taiwan [104-2628-E-002-008-MY3, 105-2221-E002-227-MY3, 105-2218-E-155-007, 105-2221-E-002-003-MY3, 105-2622-E155-003-CC2]
- Aim for Top University Project at National Taiwan University [105R7706, 107L2033-32, 107L891204, 107L7703, 107L104312, 107L7828]
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Herein, we report the synthesis of stable and efficient novel Ru-embedded C-Al2O3 catalyst for the hydrogenation of levulinic acid (LA) to gamma-valerolactone (GVL) in water under ambient condition. The prepared Ru@C-Al2O3 catalyst is characterized in detail using various physicochemical characterization techniques (XRD, XPS, Raman spectroscopy, TEM, TGA, and ICP-OES). The Ru nanoparticles confined within MIL-53-NH2-derived C-Al2O3 (denoted as Ru@C-Al2O3) show remarkable efficiency for the hydrogenation of LA into GVL (99.9% yield) under ambient reaction condition (hydrogen pressure 1 atm, 25 degrees C). The ultra-small particles size (1 nm) and high electron density surrounding Ru NPs resulted in excellent catalytic performance for the hydrogenation of LA. The Ru@C-Al2O3 catalyst is stable under reaction condition and exhibits consistent catalytic activity during recycle experiments. Furthermore, this catalyst shows lower activation energy (Ea = 34.66 kJ mol(-1)) compared to the reported methods for the hydrogenation of LA to GVL.
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