• 专利标题:   New graphene oxide-loaded imidazolinium compound used as phase transfer catalyst in oxidation of benzyl alcohol for producing benzaldehyde.
  • 专利号:   CN107519932-A
  • 发明人:   XUE B, LIANG X, XIE D, LIU N, XU J, LI Y
  • 专利权人:   UNIV CHANGZHOU
  • 国际专利分类:   B01J027/188, B01J031/12, B01J031/18, B01J031/34, B01J037/34, C07C045/29, C07C047/54
  • 专利详细信息:   CN107519932-A 29 Dec 2017 B01J-031/18 201812 Pages: 9 Chinese
  • 申请详细信息:   CN107519932-A CN10880477 26 Sep 2017
  • 优先权号:   CN10880477

▎ 摘  要

NOVELTY - A graphene oxide-loaded imidazolinium compound (I) or (II) as phase transfer catalyst, is new. USE - New imidazolinium-substituted graphene oxide used as phase transfer catalyst in oxidation of benzyl alcohol for producing benzaldehyde. ADVANTAGE - The catalyst having excellent catalytic performance and multiplexing performance, benzyl alcohol conversion rate of 91% or less, and benzaldehyde selectivity of 99% or less, is manufactured efficiently by simple method. DETAILED DESCRIPTION - A graphene oxide-loaded imidazolinium compound of formula (I) or (II) as a phase transfer catalyst, is new. An INDEPENDENT CLAIM is included for manufacture of catalyst (I) or (II), which involves adding graphene oxide of formula (A1) to anhydrous toluene solution containing a siloxane-containing ionic liquid of formula (A2) or (A3), ultrasonically treating the mixture for 30 minutes, vigorously stirring under nitrogen atmosphere, refluxing at 0-120 degrees C for 6-24 hours, washing with ethanol, filtering, stirring at 50 degrees C, vacuum drying for 12 hours to obtain graphene oxide-loaded ionic liquid of formula (A4) or (A5), dispersing the compound (A4) or (A5) in deionized water, uniformly stirring, adding aqueous solution of 0.1 mol/L phosphotungstic acid, stirring at room temperature for 6 hours, filtering, washing with deionized water, vacuum drying at 80 degrees C for 12 hours. The mass ratio of the graphene oxide with respect to the siloxane-containing ionic liquid is 1:1-2:1.