公开(公告)号：EP0925829B1

公开(公告)日：2004-03-31

申请号：EP98310631.1

申请日：1998-12-23

申请人： MIZUSAWA INDUSTRIAL CHEMICALS, LTD.

发明人： Kojima, Seiji, c/o Mizusawa Ind. Chemicals Ltd ,  Hatano, Masashi c/o Mizusawa Ind. Chemicals Ltd ,  Yamamoto, Hitoshi c/o Mizusawa Ind. Chemicals Ltd ,  Imai, Kiyohiko c/o Mizusawa Ind. Chemicals Ltd

IPC分类号： B01J21/16 ,  B01J20/12 ,  B01J23/745

CPC分类号： B01J21/16

公开(公告)号：EP0925829A1

公开(公告)日：1999-06-30

申请号：EP98310631.1

申请日：1998-12-23

申请人： MIZUSAWA INDUSTRIAL CHEMICALS, LTD.

发明人： Kojina, Seiji, c/o Mizusawa Ind. Chemicals Ltd ,  Hatano, Masashi c/o Mizusawa Ind. Chemicals Ltd ,  Yamamoto, Hitoshi c/o Mizusawa Ind. Chemicals Ltd ,  Imai, Kiyohiko c/o Mizusawa Ind. Chemicals Ltd

IPC分类号： B01J21/16 ,  B01J20/12 ,  B01J23/745

CPC分类号： B01J21/16

摘要： The present invention provides an activated clay for refining aromatic hydrocarbons such as BTX (benzene, toluene, xylene), etc., satisfying the requirements of both excellent life and excellent side-reaction-preventing property. The activated clay for treating aromatic hydrocarbons is obtained by treating dioctahedral smectite clay minerals with an acid so as to possess a BET specific surface area of not smaller than 250 m 2 /g and to contain iron in an amount of not smaller than 2.5% by weight reckoned as an Fe 2 O 3 oxide. Alternatively iron is added after the acid treatment by precipitation of an iron salt into the activated clay.

摘要翻译： 本发明提供一种活化粘土，用于精炼芳族烃如BTX（苯，甲苯，二甲苯）等，满足寿命和优异的防反应性的优点。 用于处理芳族烃的活性粘土是通过用酸处理二八面体蒙皂石粘土矿物得到的，其BET比表面积不小于250m 2 / g，并含有不小于2.5的铁 重量％计为Fe2O3氧化物。 或者，通过将铁盐沉淀到活化的粘土中，在酸处理后加入铁。