• 专利标题:   Producing graphene comprises contacting solid catalyst in divided state comprising mixed oxide with gaseous composition flow comprising carbon source, where solid catalyst has single crystal structure and average crystalline domain size.
  • 专利号:   FR2984365-A1, WO2013093350-A1, FR2984365-B1
  • 发明人:   BACSA R, SERP P
  • 专利权人:   INST NAT POLYTECHNIQUE TOULOUSE, CENT NAT RECH SCI, CNRS CENT NAT RECH SCI
  • 国际专利分类:   B01J023/76, B82Y030/00, B82Y040/00, C01B031/02, C23C016/26, C01B031/04
  • 专利详细信息:   FR2984365-A1 21 Jun 2013 C23C-016/26 201347 Pages: 33 French
  • 申请详细信息:   FR2984365-A1 FR003952 20 Dec 2011
  • 优先权号:   FR003952

▎ 摘  要

NOVELTY - Producing graphene comprises contacting a solid catalyst in a divided state comprising at least one mixed oxide (I) with a gaseous composition flow comprising at least one carbon source in a gaseous state, where the solid catalyst has a single crystal structure and is selected as a function of an average crystalline domain size of the solid catalyst to produce graphene having a thickness of less than 15 nm and at least one dimension perpendicular to the thickness of 0.1-500 mu m. USE - The method is useful for producing graphene, preferably graphene powder, which is useful for manufacturing electron conducting materials, heat conducting materials, composite materials, electrodes (all claimed), and microprocessors. ADVANTAGE - The method produces graphene with high yield and low cost without large equipments and adhesive surface coat. DETAILED DESCRIPTION - Producing graphene comprises contacting a solid catalyst in a divided state comprising at least one mixed oxide of formula (AFe2O4) (I) with a gaseous composition flow comprising at least one carbon source in a gaseous state, where the solid catalyst has a single crystal structure and is selected as a function of an average crystalline domain size of the solid catalyst to produce graphene having a thickness of less than 15 nm and at least one dimension substantially perpendicular to the thickness of 0.1-500 mu m. A = metal element with mixed valence to present at least two valences, where one of the valences of the element metal with mixed valence is +2. An INDEPENDENT CLAIM is included for a graphene powder obtained by the method, where the graphene powder is formed of solid particles having a thickness of less than 15 nm and at least one dimension substantially perpendicular to the thickness of 0.1 mu m.