基本信息:
- 专利标题：
- 申请号：DE3740313 申请日：1987-11-27
- 公开(公告)号：DE3740313C2 公开(公告)日：1996-02-15
- 发明人： MAKI TAKAO , YOKOYAMA TOSHIHARU , NAKANISHI AKIO , SHIODA KATASHI , ASATANI HARUKI
- 申请人： MITSUBISHI CHEM CORP
- 专利权人： MITSUBISHI CHEM CORP
- 当前专利权人： MITSUBISHI CHEM CORP
- 优先权： JP28354786 1986-11-28; JP29558986 1986-12-11
- 主分类号： C07C7/13
- IPC分类号： C07C7/13 ; B01D15/00 ; B01D15/08 ; C07C1/00 ; C07C7/00 ; C07C15/24 ; C07C67/00 ; C07C7/14 ; B01J20/18
摘要：
A method of separating 2,6-dimethylnaphthalene from a feed material containing a mixture of dimethylnaphthalene isomers comprises the steps of: adsorption separation using an adsorbent of a zeolite Y containing alkali metal or zinc and a desorbent of an organic solvent mainly composed of paraxylene and/or orthoxylene to obtain a solution consisting of the desorbent and the feed material containing 2,6-dimethylnaphthalene at a concentration of at least 60 wt % on the feed material other than desorbent; and crystallization of the solution having a concentration of the desorbent at 30 to 90 wt % to obtain 2,6-dimehtylnaphthalene of high purity in a crystalline form.
公开/授权文献:
- DE3740313A1 公开/授权日：1988-06-09