Title: Method for removing boric acid catalyst
Application Number: 91111706 Application Date: 1991.12.23
Publication Number: 1073682 Publication Date: 1993.06.30
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C07H3/04,C13K13/00
Applicant(s) Name: Fu Weifang Address: 266071
Inventor(s) Name: Fu Weifang
Attorney & Agent: WANG JUNHUA
Abstract:
     The present invention relates to a method of removing catalyst boric acid in synthetic reaction of lactulose. The existent method uses the ion-exchange method to remove boric acid, its cost is high, period is long and its procedure is complex. Said invention is that in the above-mentioned synthetic reaction magnesium oxide is added and reacts by stirring for 60-180 minuts at the temperature of 70-80 deg.C so as to produce magnesium borate white precipitate, and then the above-mentioned material is centrifugally filtered, so that its precipitate can be removed.
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