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构筑钌基纳米催化剂用于5-羟甲基糠醛加氢制2,5-二羟甲基四氢呋喃
蓝梓桀, 王聪, 李辉
上海师范大学 化学与材料科学学院, 上海 200234
摘要:
合理使用生物质,对解决环境污染和资源短缺问题大有裨益.5-羟甲基糠醛(5-HMF)可以由生物质衍生的糖类脱水获得,进一步完全氢化可以转化为具有高附加值的2,5-二羟甲基四氢呋喃(DHMTHF).以表面胺基功能化介孔二氧化硅小球(SiO2-NH2)为载体,采用等体积浸渍法制备了高分散钌(Ru)基(Ru-B)纳米催化剂(Ru-B/SiO2-NH2).以2-丁醇为溶剂,将制得的Ru-B/SiO2-NH2用于5-HMF加氢制DHMTHF.在160℃,2.76 MPa,800 r·min-1的条件下,5-HMF转化率为100%,DHMTHF的产率为87%.与目前报道的催化剂相比,该催化体系可以在更为温和的条件下获得较好的效果.构效关系研究表明:载体表面胺基功能化可以起到锚定和高度分散Ru-B非晶态合金纳米粒子的作用.
关键词:  钌(Ru)基(Ru-B)  5-羟甲基糠醛(5-HMF)  2,5-二羟甲基四氢呋喃(DHMTHF)  完全加氢  生物质催化转化
DOI:10.3969/J.ISSN.1000-5137.2020.02.004
分类号:O643.32
基金项目:国家自然科学基金面上项目(21972093)
Synthesis of Ru-based nanocatalyst for 5-hydroxymethylfurfural hydrogenation to 2, 5-dihydroxymethyltetrahydrofuran
LAN Zijie, WANG Cong, LI Hui
College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
Abstract:
Rationaluse ofbiomassis of greatbenefittosolving environmentalpollution andresourceshortage.5-Hydroxymethylfurfural (5-HMF)can be obtained via dehydration of sugars derived from biomass, which can be converted into high-value-added 2, 5-dihydroxymethyltetrahydrofuran(DHMTHF)by further complete hydrogenation. High-dispersionruthenium(Ru)-based(Ru-B) nanocatalyst(Ru-B/SiO2-NH2)was synthesized with surface amino-functionalized mesoporous silica spheres(SiO2-NH2)as the carrier.During the hydrogenation of 5-HMF to DHMTHF, the as-prepared Ru-B/SiO2-NH2 was used as the catalyst with 2-butanol as the solvent.Under optimized reaction conditions(reaction temperature:160 ℃, reaction pressure:2.76 MPa), the conversion of 5-HMF was 100% and the selectivity to DHMTHF was 87%. Compared with the catalysts reported so far, better results can be achieved by the present catalytic system under milder conditions. Structure-activity relationship studies show that aminofunctionalization on the surface of the carrier can anchor and disperse Ru-B amorphous alloy nanoparticles.
Key words:  ruthenium(Ru)-based(Ru-B)  5-hydroxymethylfurfural(5-HMF)  2, 5-dihydroxymethyltetrahydrofuran (DHMTHF)  complete hydrogenation  catalytic biomass conversion