title: Catalytic Response and Stability of Nickel/Alumina for the Hydrogenation of 5-Hydroxymethylfurfural in Water.
abstract: The catalytic response of Ni on Al2O3 obtained from Ni-Al layered double hydroxides was studied for the liquid-phase hydrogenation of hydroxymethyl furfural to tetrahydrofuran-2,5-diyldimethanol (THFDM) in water. The successive calcination and reduction of the precursors caused the removal of interlayer hydroxyl and carbonate groups and the reduction of Ni(2+) to Ni(0). Four reduced mixed oxide catalysts were obtained, consisting of different amount of Ni metal contents (47-68 wt%) on an Al-rich amorphous component. The catalytic activity was linked to Ni content whereas selectivity was mainly affected by reaction temperature. THFDM was formed in a stepwise manner at low temperature (353 K) whereas 3-hydroxymethyl cyclopentanone was generated at higher temperature. Coke formation caused deactivation; however, the catalytic activity can be regenerated using heat treatment. The results establish Ni on Al2O3 as a promising catalyst for the production of THFDM in water.
authors: Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK.
authors: Noémie
authors: N
authors: Perret
authors: Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK.
authors: Alexios
authors: A
authors: Grigoropoulos
authors: Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK.
authors: Marco
authors: M
authors: Zanella
authors: Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK.
authors: Troy D
authors: TD
authors: Manning
authors: Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK.
authors: John B
authors: JB
authors: Claridge
authors: Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK. m.j.rosseinsky@liv.ac.uk.
authors: Matthew J
authors: MJ
authors: Rosseinsky
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D002384:Catalysis; D005662:Furaldehyde / Q000031:analogs & derivatives* / Q000737:chemistry; D006865:Hydrogenation; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D009532:Nickel / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D014867:Water; C008046:5-hydroxymethylfurfural; D009532:Nickel; D000535:Aluminum; D005662:Furaldehyde
keywords: 5-hydroxymethylfurfural; hydrogenation; layered compounds; nickel; water