Rising energy needs and the exhaustion of fossil fuels are calling for renewable fuels such as dihydrogen (H₂), commonly named 'hydrogen.' Biomass treatment produces glycerol, which can be further used to generate dihydrogen or syngas. Here, actual challenges comprise the design of efficient and economically viable catalysts for attaining high hydrogen yield and minimizing coke deposition. Here, we review glycerol valorization routes for hydrogen or syngas generation, such as pyrolysis, steam reforming, aqueous phase, dry, supercritical water, partial oxidation, and autothermal reforming. We focus on cobalt-based catalysts due to their high availability, low cost, thermal stability, and coke resistance. The efficiency of cobalt-based catalysts can be improved by modifying textural properties, particle size and distribution, the strength of metal–support interaction, surface acidity and basicity, oxygen mobility, and reducibility. Such improvements have led to 100% glycerol conversion, 90% dihydrogen yield, and coke deposition of about 0.05%.

不断增长的能源需求和化石燃料的枯竭要求使用可再生燃料，例如氢气 (H ₂)，通常称为“氢”。生物质处理产生甘油，可进一步用于产生氢气或合成气。在这里，实际挑战包括设计高效且经济可行的催化剂，以实现高氢产率和最大限度地减少焦炭沉积。在这里，我们回顾了用于制氢或合成气的甘油增值路线，例如热解、蒸汽重整、水相、干水、超临界水、部分氧化和自热重整。我们专注于钴基催化剂，因为它们具有高可用性、低成本、热稳定性和抗焦性。钴基催化剂的效率可以通过改变结构性质、粒度和分布、金属-载体相互作用的强度、表面酸度和碱度、氧迁移率和还原性来提高。