Issue 2, 2024

Manufacture of olefins by the selective hydrodeoxygenation of lignocellulosic ketones over a cobalt molybdate catalyst

Abstract

Olefins are important feedstocks in the production of fuels and many useful chemicals. Herein, cobalt molybdate (CoMoO4) was first synthesized by an environmentally friendly evaporation method and it exhibited excellent catalytic performance for the production of olefins by the selective hydrodeoxygenation (HDO) of ketones that can be derived from lignocellulose. On the basis of the characterization results, the excellent catalytic performance of CoMoO4 was attributed to its larger specific surface area, better pore structure, higher oxygen vacancy (or Mo5+ species) concentration, higher acid strength and higher concentration of acid sites. Under the optimized reaction conditions, 4-heptanone was almost completely converted to heptene, and a high carbon yield of heptene (96%) was achieved over a CoMoO4 catalyst with a Co/Mo atomic ratio of 0.8 (denoted as CoMoO4-0.8). The CoMoO4 catalyst is also active for the selective HDO of other lignocellulosic ketones (such as acetone, butanone, 2-pentanone, 3-pentanone, cyclopentanone, cyclohexanone, 5-nonanone and acetophenone) to their corresponding olefins.

Graphical abstract: Manufacture of olefins by the selective hydrodeoxygenation of lignocellulosic ketones over a cobalt molybdate catalyst

Supplementary files

Article information

Article type
Paper
Submitted
09 אוק 2023
Accepted
11 דצמ 2023
First published
12 דצמ 2023

Green Chem., 2024,26, 936-947

Manufacture of olefins by the selective hydrodeoxygenation of lignocellulosic ketones over a cobalt molybdate catalyst

F. Han, G. Li, Y. Liu, A. Wang, F. Wang, T. Zhang and N. Li, Green Chem., 2024, 26, 936 DOI: 10.1039/D3GC03825D

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