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Abstract:
Novel and selective strategies for platform chemical production from renewable biomass are highly attractive in respect to value-added utilization of sustainable resources. In this study, a series of low-cost, commercially available, transition metal carbonates (Zr, Ni, Mg, Zn, and Pb) were investigated for catalytic transfer hydrogenation of levulinate esters to gamma-valerolactone (GVL) via the cascade process of Meerwein-Ponndorf-Verley (MPV) reduction and lactonization reaction. Among the selected catalysts, basic zirconium carbonate is the most active, with the highest turnover frequency (TOF) of 3.1 h(-1) and a surface reaction rate of 0.21 mol m(-2) h(-1). At 453 K, 3.0 h, and 1.0 MPa N-2, 100% ethyl levulinate conversion, 96.3% GVL yield, and 91.9% hydrogen donor utilization are observed due to the cooperative effect between acid (Mn+) and base (-OH) sites. Furthermore, this catalyst shows high recyclability under the optimized conditions, where a satisfactory catalytic activity is shown even after six consecutive runs.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN: 0888-5885
Year: 2018
Issue: 31
Volume: 57
Page: 10126-10136
3 . 3 7 5
JCR@2018
3 . 8 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
ESI HC Threshold:209
JCR Journal Grade:1
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 32
SCOPUS Cited Count: 35
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
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