title: In situ generation of Ni nanoparticles from metal-organic framework precursors and their use for biomass hydrodeoxygenation.
abstract: 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.
authors.affiliation: Laboratory for Inorganic Chemistry and Technology, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana (Slovenia).
authors.forename: Tadeja Birsa
authors.initials: TB
authors.lastname: Čelič
authors.affiliation: Laboratory of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana (Slovenia).
authors.forename: Miha
authors.initials: M
authors.lastname: Grilc
authors.affiliation: Laboratory of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana (Slovenia).
authors.forename: Blaž
authors.initials: B
authors.lastname: Likozar
authors.affiliation: Laboratory for Inorganic Chemistry and Technology, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana (Slovenia). natasa.novak.tusar@ki.si.|School of Engineering and Management, University of Nova Gorica, Vipavska 13, 5000 Nova Gorica (Slovenia). natasa.novak.tusar@ki.si.
authors.forename: Nataša Novak
authors.initials: NN
authors.lastname: Tušar
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D018533:Biomass; D002384:Catalysis; D008031:Lignin / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry
chemical_list: D009942:Organometallic Compounds; C036909:lignocellulose; D012822:Silicon Dioxide; D009532:Nickel; D008031:Lignin; D000537:Aluminum Oxide
keywords: biomass conversion; heterogeneous catalysis; hydrodeoxygenation; metal-organic frameworks; nanoparticles