Recent trends of biomass-derived heterogeneous catalysts for advanced biofuels production

Biomass-to-renewable fuel conversion is increasingly recognized as a cornerstone of global decarbonization strategies. However, its large-scale deployment remains constrained by feedstock heterogeneity, catalyst cost, and inefficient downstream processing. Recent advances in biomass-derived heterogeneous catalysts offer a compelling pathway to address these bottlenecks by enabling cost-effective, recyclable, and structurally tunable catalytic systems. Emerging biochar-derived materials, including metal-functionalized acidic catalysts, metal-organic frameworks (MOFs), single-atom catalysts (SACs), and tunable bifunctional acid-base catalysts, which demonstrate enhanced activity, selectivity, and tolerance towards complex biomass feedstocks. Concurrently, innovations in hierarchical structuring, defect engineering, and heteroatom doping enable precise control over catalytic interfaces and reaction pathways. Beyond catalyst design, the integration of these systems within circular biorefinery frameworks and process intensification strategies is gaining traction to produce sustainable drop-in fuels. This work highlights these recent breakthroughs and outlines key directions toward the development of robust, scalable, and economically viable technologies for next-generation renewable biofuel production.