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Multifunctional nanocomposites with non-precious metals and magnetic core for 5-HMF oxidation to FDCA
Applied Catalysis B: Environment and Energy ( IF 20.2 ) Pub Date : 2020-07-09 , DOI: 10.1016/j.apcatb.2020.119309
Alina Tirsoaga , Magdi El Fergani , Nicolas Nuns , Pardis Simon , Pascal Granger , Vasile I. Parvulescu , Simona M. Coman

The oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) has been investigated on multi-functional magnetic nano-composite catalysts ([email protected]@MNP, where M = CoOx, MnOx or FeOx, "10" - 10wt% and x = Si/Nb ratio of 50 and 22) combining Nb-MCM-41 and Mn, Co and Fe oxides as a shell of a magnetic nanoparticles core. These catalysts were exhaustively characterized by several techniques such as XRD, adsorption-desorption of liquid nitrogen at 77K, CO2- and NH3-TPD, DRIFT, XPS, SEM-EDX, ICP-OES and ToF-SIMS. The new composite catalysts produced FDCA with a selectivity of 96.5 % for a XHMF = 96.9 % ([email protected]@MNP). A synergetic effect between MOx and Nb species in the activation of t-BuOOH and oxidation of HMF has been identified. The new developed catalysts do not require the presence of a base in the homogeneous phase and combine unique oxidation properties with practical separation advantages.



中文翻译:

具有非贵金属和磁芯的多功能纳米复合材料,可将5-HMF氧化为FDCA

已经在多功能磁性纳米复合催化剂([电子邮件保护] @MNP,其中M = CoO x,MnO x或FeO x)上研究了5-羟甲基糠醛(HMF)氧化为2,5-呋喃二甲酸(FDCA),“ 10”-10wt%,x = Si / Nb比为50和22)结合了Nb-MCM-41和Mn,Co和Fe氧化物作为磁性纳米粒子核的壳。这些催化剂通过多种技术进行了详尽的表征,例如XRD,液氮在77K下的吸附-脱附,CO 2-和NH 3 -TPD,DRIFT,XPS,SEM-EDX,ICP-OES和ToF-SIMS。新的复合催化剂生产的FDCA,对于X HMF = 96.9%([电子邮件保护] @MNP)的选择性为96.5%。MO之间的协同作用已经鉴定出t- BuOOH活化和HMF氧化中的x和Nb物质。新开发的催化剂不需要在均相中存在碱,并将独特的氧化性能与实际分离优势结合在一起。

更新日期:2020-07-10
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