CO2辅助合成金属纳米粒子用于生物质衍生化合物升级的最新进展
Recent advances on CO2-assisted synthesis of metal nanoparticles for the upgrading of biomass-derived compounds
AI总结：
本文综述了超临界二氧化碳（scCO2）在合成金属纳米粒子中的应用及其结构制备关系，并指出scCO2制备的催化剂在生物质氧化和加氢转化中表现出优异性能，为高效金属催化剂的合理设计提供了参考。
摘要：
由于化石资源的快速枯竭和日益严重的环境问题，纳米结构催化剂在将生物质转化为高附加值化学品方面引起了越来越多的关注。超临界二氧化碳（scCO2）流体因其优良的性质成为合成纳米结构材料的极具吸引力的介质。本文详细评估了scCO2的性质及其在制备金属纳米粒子中的作用。系统总结并列表比较了使用scCO2合成不同类型金属纳米粒子（包括金属氧化物纳米粒子）的过程，以及所得金属纳米粒子的结构与制备条件（如反应温度和压力、金属前驱体类型和沉积时间）之间的关系。此外，与传统方法制备的金属催化剂相比，使用scCO2制备的催化剂在生物质转化反应中表现出优异的催化性能，主要集中在氧化和加氢反应。最后，强调了利用scCO2制备金属纳米粒子以实现生物质转化为化学品和液体燃料的机遇与挑战。本综述有助于合理设计更高效的金属催化剂，用于从生物质衍生化学品中选择性合成精细化学品和燃料。
英文摘要：
Nanostructured catalysts have attracted the increased attention for biomass conversion into high-valued chemicals due to the rapid depletion of fossil resources and increasingly severe environmental issues. Supercritical carbon dioxide (scCO2) fluid is an attractive medium for synthesizing nanostructured materials due to its favorable properties. In this review, the properties of scCO2 and the roles of scCO2 in the fabrication of metal nanoparticles were assessed in detailed. A general overview of the synthesis of different types of metal nanoparticles (including metal oxide nanoparticles) using scCO2 and the relationship between the structure of the obtained metal nanoparticles and the preparation conditions such as reaction temperature and pressure, types of metal precursors, and deposition time are system summarized and compared in tables. Besides, compared to the meatal catalysts using the conventional methods, the catalysts obtained using scCO2 exhibited excellent catalytic performance on biomass conversion reactions, mainly focused on oxidation, hydrogenation reactions. Finally, opportunities and challenges of metal nanoparticle preparation using scCO2 for biomass valorization to chemicals and liquid fuels are highlighted. This review could be helpful for the rational design of more efficient metal catalysts for the selective synthesis of fine chemicals and fuels from biomass-derived chemicals.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
