• 专利标题:   Preparing gamma-valerolactone by catalytic hydrogenation of levulinic acid comprises e.g. performing hydrogenation reaction of levulinic acid and catalyst component in presence of silver-zirconium dioxide-graphene oxide catalyst.
  • 专利号:   CN111253347-A
  • 发明人:   LI S, BAI X, MAO J, YIN J, ZHOU J, LV Y, WANG F
  • 专利权人:   UNIV DALIAN
  • 国际专利分类:   B01J023/50, C07D307/33
  • 专利详细信息:   CN111253347-A 09 Jun 2020 C07D-307/33 202051 Pages: 9 Chinese
  • 申请详细信息:   CN111253347-A CN10092121 14 Feb 2020
  • 优先权号:   CN10092121

▎ 摘  要

NOVELTY - Preparing gamma -valerolactone by catalytic hydrogenation of levulinic acid comprises performing hydrogenation reaction of levulinic acid and catalyst component in presence of silver-zirconium dioxide-graphene oxide catalyst, water or tetrahydrofuran as solvent, where reaction temperature of is 180-220 degrees C, and the hydrogen pressure is 3-5 MPa, and catalyst component is a nano material composed of silver, zirconium dioxide and graphene oxide; molar ratio of silver and zirconium is 1:9-4:6; amount of graphene oxide accounts for 5-30% the total amount of silver and zirconium dioxide, and catalyst is prepared by co-precipitation method. USE - The method is useful for preparing gamma -valerolactone by catalytic hydrogenation of levulinic acid. ADVANTAGE - The gamma -valerolactone: has large specific surface area, small grain size, stronger bonding, higher catalytic activity and selectivity.