• 专利标题:   Preparation of high-efficiency graphene oxide or graphite oxide, involves adding concentrated sulfuric acid, graphite, potassium permanganate and water to reaction kettle, reacting, leaving still, and purifying to remove sulfuric acid.
  • 专利号:   CN112678812-A, CN215161042-U
  • 发明人:   WANG B, YIN S, ZHANG J, GE M, TANG R, QU Y
  • 专利权人:   NANTONG SIXTH ELEMENT MATERIALS TECHNOLOGY CO LTD, SIXTH ELEMENT CHANGZHOU MATERIALS TECHNO, NANTONG SIXTH ELEMENT MATERIALS TECHNOLO
  • 国际专利分类:   C01B032/198, C01B032/215, C01B032/23
  • 专利详细信息:   CN112678812-A 20 Apr 2021 C01B-032/198 202146 Pages: 17 Chinese
  • 申请详细信息:   CN112678812-A CN11638523 31 Dec 2020
  • 优先权号:   CN11638523, CN23324114

▎ 摘  要

NOVELTY - Preparation of large-scale and high-efficiency graphene oxide or graphite oxide involves (1) adding concentrated sulfuric acid, graphite, potassium permanganate and water to the reaction kettle under stirring condition, controlling the reaction temperature and reaction time to generate graphene oxide or graphite oxide, (2) leaving still to remove the sulfuric acid solution in the reaction product, (3) purifying the product to remove the sulfuric acid solution to obtain high-content filter cake, dry materials or slurry state material, (4) mixing and dispersing the filter cake material, dry material or slurry state material with water to form slurry or solution with low solid content, and (5) re-purifying the material to obtain high-content filter cake material, dry material or slurry state material, and (6) repeating the step (4) and (5) for several times. USE - Preparation of large-scale and high-efficiency graphene oxide or graphite oxide. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for device for preparing the graphene oxide or graphite oxide, which comprises reaction kettle, transfer device (A), static device, transfer device (B), purifier (A), transfer device (C), and collector (A). The transfer device (A) is arranged between the reaction kettle and the static device, and is connected to the reaction kettle and the static device, and is used to send all the products discharged from the reaction kettle into the static device. The transfer device (B) is arranged between the static device and purifier (A), and is connected to the static device and purifier (A), and is used to send the lower layer material separated from the static device to purifier (A). The transfer device (C) is arranged between the purifier (A) and collector (A), and is used to send the graphene oxide or graphite oxide processed by the purifier (A) to the collector (A).