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公开(公告)号：US3711426A
公开(公告)日：1973-01-16
申请号：US3711426D
申请日：1970-02-26
Applicant: TOPSOE H
Inventor： JORGENSEN M
CPC classification number: B01J23/862
Abstract: HIGH TEMPERATURE SHIFT CATALYSTS COMPRISING IRON OXIDE ARE PREPARED FROM SOLUTIONS OF SOLUBLE IRON SALTS BY PRECIPITATION WITH AN ORGANIC ACID REAGENT, SUCH AS OXALIC ACID, GIVING PRECIPITATES IN A VERY COARSE, EASILY-WASHED FORM. TREATMENT OF THE WELL-WASHED PRECIPITATE WITH ALKALLI REGENERATES THE ORGANIC ACID REAGENT AND GIVES A HIGHLY FLOCCULENT IRON OXIDE OF HIGH SPECIFIC SURFACE AND EXTREMELY LOW SULPHUR CONTENT. THIS IS PARTICULARLY SUITABLE FOR PROMOTION WITH PBO, WHICH IS NOTED AS BEING VERY SENSITIVE TO SULPHUR CONTAMINATION.
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