Liquid phase catalytic transfer hydrogenation of ethyl levulinate to γ-valerolactone over ZrO2/SBA-15

Amin Osatiashtiani, Samantha A. Orr, Lee J. Durndell, Irene Collado García, Andrea Merenda, Adam F. Lee*, Karen Wilson*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

γ-Valerolactone (GVL) is an important bio-derived platform molecule whose atom- and energy efficient, and scalable, catalytic synthesis is highly desirable. Catalytic transfer hydrogenation (CTH) of ethyl levulinate (EL) to γ-valerolactone (GVL) has been selectively performed in batch and continuous flow over ZrO2/SBA-15 solid acid catalysts. Tuning the zirconia adlayer delivered maximum CTH activity for 11.6 wt% Zr, ascribed to the optimal ratio of Lewis and Brønsted acid sites for the two-step cascade reaction. EL conversion almost doubled under flow versus batch operation, accompanied by a small rise in selectivity to GVL, tripling average GVL productivity in continuous flow (5.2 vs. 1.37 mmol g−1 h−1). Turnover frequency (TOF) is significantly improved under flow conditions (14.5 h−1) relative to batch (3.6 h−1), demonstrating the utility of flow chemistry for accelerating the manufacture of valuable bio-derived molecules.
Original languageEnglish
Pages (from-to)5611-5619
Number of pages9
JournalCatalysis Science and Technology
Volume12
Issue number18
Early online date26 Jul 2022
DOIs
Publication statusPublished - 26 Jul 2022

Bibliographical note

© The Royal Society of Chemistry 2022

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