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1.发明授权Process for freeing 55-85% sulphuric acid from its impurities due to metals and/or semi-metals 失效从金属和/或半金属的劣质中释放55-85％的硫酸的方法
公开(公告)号：US3689217A
公开(公告)日：1972-09-05
申请号：US3689217D
申请日：1970-06-15
Applicant: INVENTA AG
Inventor： CAPAUL MARCEL , SAUTER HERMANN
CPC classification number: B01J41/04 , C01B17/904
Abstract: PROCESS FOR REMOVING METAL IMPURITITEDSUCH AS IRON FORM 55-85% BY WEIGHT SULPHURIC ACID. THE SULPHURIC ACID IS TREATED WITH A MOLAR EXCESS OF A HALIDE TO FORM A COMPLEX WITH THE IMPURITY. THE ACID IS THEN PASSED THROUGH AN ANION EXCHANGER TO PURIFY AND REMOVE THE IMPURITIES FROM THE ACID.
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