公开(公告)号：US3787563A

公开(公告)日：1974-01-22

申请号：US3787563D

申请日：1972-03-03

Applicant: BASF AG

Inventor： KARTTE K ,  TAGLINGER L ,  JOCKERS K ,  MEIER H

IPC: C01B17/90 ,  C01B21/14 ,  C01B31/02

CPC classification number: C01B21/1418 ,  C01B17/90

Abstract: PROCESS FOR THE PURIFICATION OF SULFIRIC ACID TO BE USED IN THE MANUFACTURE OF HYDROXYLAMMONIUM SULFATE BY REDUCTION OF NITRIC OXIDE IN CONTACT WITH PLATNIUM CATALYSTS. THE PROCESS CONSISTS IN DILUTING THE SULFURIC ACID WITH WATER, ADDING SUCH AN AMOUNT OF SULFUR DIOXIDE THAT AFTER TREATMENT WITH ACTIVATED CARBON IN STILL HAS A CONTENT OF AT LEAST 5 MG. OF SO2 PER LITER OF DILUTE ACID AND THEN TREATING THE SULFURIC ACID TOGETHER WITH AIR, OXYGEN OR HYDROGEN PEROXIDE AGAIN WITH ACTIVATED CARBON. THE ACTIVATED CARBON CAN BE REGENERATED BY TREATMENT WITH ALKALINE SUBSTANCES SUCH AS CAUSTIC SODA SOLUTION, AQUEOUS AMMONIA SOLUTION OR SODIUM CARBONATE SOLUTION.

公开(公告)号：US3856924A

公开(公告)日：1974-12-24

申请号：US21266371

申请日：1971-12-27

Applicant: BASF AG

Inventor： MEIER H ,  JOCKERS K ,  KAHR K ,  KARTTE K ,  FUCHS H

IPC: C01B21/14

CPC classification number: C01B21/1418

Abstract: Production of an aqueous solution of hydroxylammonium nitrate by catalytic reduction of nitrogen monoxide with hydrogen in acid solution, a platinum catalyst being used which has been partly poisoned with one or more elements of main groups V and/or VI of the Periodic Table and activated prior to the beginning of the reaction in an aqueous suspension with hydrogen. Nitric acid is continuously supplied during the reaction in an amount necessary for the end concentration of hydroxylammonium nitrate.

Abstract translation: 通过在酸性溶液中用氢气一氧化氮催化还原一氧化氮，生产硝酸羟铵，使用铂催化剂，该铂催化剂已经被元素周期表的主要V和/或VI元素的一种或多种元素部分中毒， 在具有氢气的水悬浮液中开始反应。 硝酸在反应期间以硝酸羟铵的最终浓度所需的量连续供给。