Lignin chemistry is regarded as one of the core components in the field of biomass catalytic conversion. Over the past decade, the catalytic synthesis of value-added chemicals or biofuels via...

The catalytic hydrodeoxygenation (HDO) of lignin has long been a hot research topic and vacancy engineering is a new means to develop more efficient catalysts for this process. Oxygen vacancies and sulfur vacancies are both widely used in HDO. Based on the current research status of vacancies in the field of lignin‐derived oxygenates, this Minireview discusses in detail design methods for vacancy engineering, including surface activation, synergistic modification, and morphology control. Moreover, it is clarified that in the HDO reaction, vacancies can act as acidic sites, promote substrate adsorption, and regulate product distribution, whereas for the catalysts, vacancies can enhance stability and reducibility, improve metal dispersion, and improve redox capacity. Finally, the characterization of vacancies is summarized and strategies are proposed to address the current deficiencies in this field.

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Nb2O5 supported metal materials are a vital class of green catalysts with excellent lignin hydrodeoxygenation activity and reusability in an aqueous catalytic system, in which the Nb2O5 support plays a...

Lignin exhibits a good prospect as an abundant and sustainable raw material for the production of value-added chemicals. The transition metal carbides and nitrides are very suitable for aromatics production...

The Cover Feature shows the vacancy engineering of transition metal sulfide and oxide catalysts, which effectively affect the hydrodeoxygenation of lignin‐derived oxygenates into high‐value chemicals, therefore providing new ideas for solving energy problems. More information can be found in the Minireview by S. Jiang et al.

Correction for ‘Lignin amination valorization: heterogeneous catalytic synthesis of aniline and benzylamine from lignin-derived chemicals’ by Yue Rong et al., Green Chem., 2021, DOI: 10.1039/d1gc02741g.