公开(公告)号：DE50103356D1

公开(公告)日：2004-09-23

申请号：DE50103356

申请日：2001-12-12

Applicant: BASF AG

Inventor： BENDER MICHAEL ,  WILFINGER JOERG ,  SCHENKEL ALBERT

IPC: C01B21/00 ,  C01B21/14

Abstract: A process for the continuous preparation of hydroxylammonium salts by catalytic reduction of nitrogen monoxide by means of hydrogen in a dilute aqueous solution of mineral acid in a plurality of reaction stages connected in series comprises dividing the incoming stream of dilute aqueous solution of mineral acid into at least two substreams before it is fed into the plurality of reaction stages connected in series, feeding a first of these substreams to the first reaction stage, feeding a second of these substreams to a reaction stage other than the first, where the inflow of dilute aqueous solution of mineral acid into the plurality of reaction stages connected in series is controlled by means of the pH in this reaction stage other than the first.

公开(公告)号：DE50013723D1

公开(公告)日：2006-12-21

申请号：DE50013723

申请日：2000-08-03

Applicant: BASF AG

Inventor： WATZENBERGER OTTO ,  WILFINGER JOERG

IPC: C01B21/14 ,  B01J39/04 ,  B01J41/04 ,  B01J45/00 ,  H05K3/26

Abstract: The present invention relates to a process for the preparation of high-purity, stabilized hydroxylamine solutions in which an aqueous hydroxylamine starting solution is treated with an anion exchanger which has been pre-loaded with a hydroxylamine stabilizer in order to remove anions.