The research group has been dealing for years with the catalytic conversion of sugars and lignocellulosic biomasses (herbaceous crops, food chain waste and industrial processing waste) to give products with high added value, such as furaldehyde, 5-hydroxymethylfurfural and levulinic acid. The valorization of these important intermediates through hydrogenation reactions such as γ-valerolactone, 2-methyltetrahydrofuran and 2-butanol is also a field of study of the Greencat group. For these purposes, sustainable innovative catalytic processes are developed using non-toxic, economical and/or renewable reagents, efficient alternative heating systems such as microwaves, water as a reaction medium and economic heterogeneous catalysts whose recyclability is studied.