One of the few molecular phenolic compounds that is currently produced on a large scale industrially from biomass is vanillin. As a result, it may one day serve as a crucial intermediary in the synthesis of bio-based polymers, which call for aromatic monomers to achieve desirable thermo-mechanical characteristics. Following a first section devoted to Vanillin Market current sources, this article focuses on the alkaline oxidation lignin-to-vanillin process, outlining benefits and limitations, then explores the various postdepolymerization techniques for product isolation. Finally, it considers the prospects for vanillin's expanded use as a crucial building block for the chemical industry.
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