Čelič Tadeja Birsa, Grilc Miha, Likozar Blaž, Tušar Nataša Novak
Laboratory for Inorganic Chemistry and Technology, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana (Slovenia).
Laboratory of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana (Slovenia).
ChemSusChem. 2015 May 22;8(10):1703-10. doi: 10.1002/cssc.201403300. Epub 2015 Mar 5.
So far, in situ-generated Ni nanoparticles have been reported to be efficient catalysts for tar cracking during wood liquefaction by pyrolysis. Herein, their performance in further bio-oil conversion steps is evaluated. Nanoparticles were generated for the first time from a Ni-containing metal-organic framework, MIL-77, during the hydrotreatment of glycerol-solvolyzed lignocellulosic (LC) biomass. Reactions were conducted at 300 °C and the H2 pressure was 8 MPa in a slurry reactor. The catalytic activity and selectivity of the deoxygenation and hydrocracking reactions for real biomass-derived feedstock using in situ-generated nanoparticles was compared with Ni nanoparticles dispersed on a silica-alumina support (commercial Ni/SiO2 -Al2 O3 catalyst). The mass activity of the in situ-generated nanoparticles for hydrogenolysis was more than ten times higher in comparison to their commercial analogues, and their potential for the use in LC biorefinery is discussed.
到目前为止，原位生成的镍纳米颗粒已被报道为木材液化热解过程中焦油裂解的高效催化剂。在此，对其在进一步生物油转化步骤中的性能进行了评估。在甘油溶剂解木质纤维素（LC）生物质的加氢处理过程中，首次从含镍金属有机框架MIL-77中生成了纳米颗粒。反应在300 °C下进行，氢气压力在浆态反应器中为8 MPa。将原位生成的纳米颗粒用于实际生物质衍生原料的脱氧和加氢裂化反应的催化活性和选择性与分散在硅铝载体上的镍纳米颗粒（商业Ni/SiO₂ -Al₂O₃催化剂）进行了比较。原位生成的纳米颗粒用于氢解的质量活性比其商业类似物高出十多倍，并讨论了它们在LC生物精炼中的应用潜力。
