Selective separation of aliphatic tertiary amines and aromatic amines by using CO 2
作者: Li WangJihe ZhaoHongsheng LuZhiyu HuangBaogang Wang
作者单位: 1College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, PR China
刊名: Separation and Purification Technology, 2020, Vol.239
来源数据库: Elsevier Journal
DOI: 10.1016/j.seppur.2020.116526
原始语种摘要: Abstract(#br)In many practical processes, it is necessary to separate the aliphatic amine from the aromatic amine from water to obtain the desired product. A simple and effective strategy was proposed for selective separation of aliphatic amines from aromatic amines by using CO 2 . With the introduction of CO 2 into the aqueous solution, aliphatic amines can be switched from hydrophobicity to hydrophilicity but aromatic amines cannot due to their different p K a . The separation performance associated with product purity cannot be explained by p K a or log K ow . Thus, solubility parameter was employed to explain the separation performance of these amines. The relationship between solubility parameter and separation performance was investigated by gas chromatography and ultraviolet...
全文获取路径: Elsevier  (合作)
影响因子:2.894 (2012)

  • aliphatic 无环的
  • amines 
  • aromatic 香的
  • tertiary 第三系
  • separation 分选