Abstract:

Biomass energy, the fourth largest energy source in the world, has the advantages of zero-carbon emissions and renewability. The upgrading of biomass energy involves converting biomass into high-value-added gas, liquid, and solid fuels (bio-natural gas, bio-methanol, bio-ethanol, etc.) through chemical, biological, or physical processes, which is of great significance in advancing China's national strategies including the dual carbon goals, energy revolution, rural revitalization, and ecological civilization construction. This perspective systematically summarizes the research progress in the key technologies for the utilization of biomass energy including the production of bio-syngas, bio-natural gas, green hydrogen, green methanol, and green ethanol from biomass. The research focus and associated challenges in corresponding key technology are analyzed, and the advantages and applications of the core catalytic reactions such as the chemical looping gasification of biomass and the catalytic reforming of biogas are addressed. Moreover, this perspective provides insights into future research directions for the utilization of biomass energy.

Key words: biogas, bio-natural gas, bio-methanol, bio-ethanol

摘要：

生物质能是世界第四大能源，具有零碳、绿色、可再生的特点。生物质能源的高值化利用，即将生物质通过化学、生物、物理转化等途径转化为高附加值气体、液体、固体燃料（生物天然气、生物甲醇、生物乙醇等），对推动我国“双碳”目标、能源革命、乡村振兴、生态文明建设等国家重大战略都具有重要意义。本文较为系统地介绍了生物质合成气生产、生物质制生物天然气、生物质制绿色氢气、生物质制绿色甲醇、生物质制绿色乙醇等生物质能源高值利用关键技术的研究进展，重点分析了对应关键技术研究的重点及所面临的难点，具体讨论了生物质化学链气化技术、沼气催化重整等核心催化反应的优点及应用，并对生物质能源的高值化利用未来的研究方向进行了展望。

关键词: 生物质, 生物天然气, 生物甲醇, 生物乙醇