• 专利标题:   Purifying chromatographic n-hexane by adsorbing and filtering n-hexane raw material through modified activated carbon fiber adsorption column, oxidizing, and removing impurities by adsorption column of graphene oxide and sodium hydroxide.
  • 专利号:   CN110713429-A
  • 发明人:   ZHANG J, SONG J
  • 专利权人:   TIANJIN CONCORD PHARM CHEM CO LTD
  • 国际专利分类:   B01D015/08, C07C007/00, C07C007/12, C07C007/13, C07C007/148, C07C009/15
  • 专利详细信息:   CN110713429-A 21 Jan 2020 C07C-007/00 202016 Pages: 9 Chinese
  • 申请详细信息:   CN110713429-A CN11037032 29 Oct 2019
  • 优先权号:   CN11037032

▎ 摘  要

NOVELTY - Purifying chromatographic n-hexane involves: (1) adsorbing and filtering a n-hexane raw material through a modified activated carbon fiber adsorption column; (2) oxidizing the filtered n-hexane raw material with ozone as an oxidizing agent; (3) removing the impurities by the adsorption column of graphene oxide, sodium hydroxide and modified 13X molecular sieve; (4) drying and removing water through 3A molecular sieve; (5) removing low-boiling point impurities by distillation; and (6) removing impurities by distillation. USE - The method is useful for purifying chromatographic n-hexane. ADVANTAGE - The method: is capable of purifying chromatographic n-hexane with high purity of 96-98% and moisture content of less than 0.006%; has fast rate and short cycle; does not introduce new impurities or generate solid waste; and uses graphene oxide and modified activated carbon fibers as impurity adsorption materials. The adsorption effects of the two adsorption materials on the impurities in the n-hexane raw material are very significant.