Karin, et al (2024) Efficient corn stover-derived metal-supported biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More catalyst for hydrogenation of xylose to xylitol. Resources Chemicals and Materials. https://doi.org/10.1016/j.recm.2024.10.002

A recent study explored the use of corn stover (CS), an abundant agricultural byproduct, as a sustainable support material for metal-based catalysts in the hydrogenation of xylose to xylitol. Xylitol is a valuable chemical widely used in food, pharmaceuticals, and other industries. Traditionally, xylitol is produced using metal catalysts like Raney nickel, but these can face issues such as fast deactivation and environmental concerns.

This research focused on creating a biochar catalyst from CS, impregnated with metals like ruthenium (Ru) and nickel (Ni). The CS biochar demonstrated high catalytic efficiency, with 5% Ru-supported biochar achieving the highest xylitol yield (87%) and selectivity (91.6%) under specific conditions (120°C, 6 hours, 4 MPa H2 pressure). The Ru/CS biochar showed strong stability, and further analysis confirmed that the metal nanoparticles were well-dispersed, contributing to its performance.

Additionally, the study highlighted the synergistic effect of Ru and Ni in bimetallic catalysts, which further enhanced xylitol yields compared to single-metal catalysts. This novel use of CS biochar not only reduces waste but also offers a more environmentally friendly alternative to traditional catalyst materials, showing promise for industrial-scale xylitol production.

The findings underscore the potential of biomass-derived biochar as a competitive and sustainable catalyst support, aligning with goals for greener chemical processes and waste utilization.