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    Recovery of bromine from tere-and isophthalic acid process residues
    1.
    发明授权
    Recovery of bromine from tere-and isophthalic acid process residues 失效
    从酪蛋白和异丙酸工艺残留物中回收溴

    公开(公告)号：US3840641A

    公开(公告)日：1974-10-08

    申请号：US29941172

    申请日：1972-10-20

    Applicant: STANDARD OIL CO

    Inventor： WAMPFLER G ,  POHLMANN H

    IPC: B01J27/32 ,  C01B7/09 ,  C01D7/10 ,  C01D7/12 ,  C07C51/42 ,  C01D3/00 ,  C01D7/26 ,  C01G45/00 ,  C01G51/06

    CPC classification number: C07C51/42 ,  B01J27/32 ,  C01B7/096 ,  C01D7/10 ,  C01D7/12 ,  Y02P20/584 ,  C07C63/26 ,  C07C63/24

    Abstract: 1. A METHOD OF RECOVERING BROMINE AS SODIUM BROMIDE AND ALSO PRODUCING SODIUM BICARBONATE FROM AT LEAST THE AQUEOUS PHASE OBTAINED FROM RECOVERY OF CATALYST METAL CARBONATE PRODUCT FROM TERE- OR ISOPHTHALIC ACID PROCESS RESIDUE CONTAINING WATER SOLUBLE SALTS OF BROMINE AND AT LEAST COBALT AS CATALYST METAL, CORROSION METALS INCLUDING IRON AND ACIDIC AND NEUTRAL AROMATIC COMPOUNDS BY TREATMENT OF SUCH RESIDUE WITH WATER IN AN AMOUNT OF 1.0-10.0 WEIGHT PARTS PER WEIGHT PART OF WATER AND WITH SODIUM BICARBONATE OR CARBONATE TO FORM A CATALYST METAL CARBONATE PRECIPITATE AND SEPARATING SUCH PRECIPITATE FROM THE RESULTING AQUEOUS PHASE, WHICH METHOD COMPRISES THERMALLY CONVERTING AT A TEMPERATURE IN THE RANGE OF 900-1000*C. THE SOLUTE CONTENT OF SAID AQUEOUS PHASE TO A SOLID MIXTURE CONTAINING SODIUM BROMIDE AND SODIUM CARBONATE AND WATER INSOLUBLE SOLIDS, LEACHING SAID SOLID MIXTURE WITN WATER IN AN AMOUNT TO FORM A SOLUTION OF ALL SODIUM BROMIDE AND SUBSTANTIALLY SATURATED SAID SOLUTION WITH RESPECT TO SODIUM CARBONATE, SEPARATING THE EXTRACT SOLUTION FROM INSOLUBLE SOLIDS, CONVERTING THE SODIUM CARBONATE IN SID EXTRACT SOLUTION TO PRECIPITATED SODIUM BICARBONATE BY REACTON WITH CARBON DIOXIDE IN THE PRESENCE OF SODIUM BROMIDE IN AN AMOUNT OF AT LEAST 10 WEIGHT PERCENT OF THE SOLUTION AT A TEMPERATURE IN THE RANGE OF AT LEAST 20*C. BUT NOT EXCEEDING THE TEMPERATURE OF REVERSING SAID CONVERSION OF CARBONATE TO BICARBONATE, SEPARATING SODIUM BICARBONATE PRECIPITATE FROM THE AQUEOUS SOLUTION OF SODIUM BROMIDE, WASHING THE RECOVERED PRECIPITATE WITH WATER, ADDING THE AQUEOUS WASH LIQUOR TO THE STEP OF DISSOLVING THE MIXTURE OF SODIUM BROMIDE AND SODIUM CARBONATE, CONCENTRATING SAID SEPARATED AQUEOUS SOLUTION OF SODIUM BROMIDE TO A SODIUM BROMIDE CONTENT OF 30 TO 45 WEIGHT PERCENT BY THE REMOVAL OF WATER FROM SAID COMPOSITE.

    Phthalic acid purification with copper activated palladium on carbon catalysts
    2.
    发明授权
    Phthalic acid purification with copper activated palladium on carbon catalysts 失效
    铜催化剂上的铜活化磷酸钠的纯化

    公开(公告)号：US3726915A

    公开(公告)日：1973-04-10

    申请号：US3726915D

    申请日：1970-07-13

    Applicant: STANDARD OIL CO

    Inventor： POHLMANN H

    IPC: C07C51/487 ,  C07C51/42 ,  B01J11/16

    CPC classification number: C07C51/487 ,  C07C63/26

    Abstract: Elemental noble metals of the platinum group as reduction catalysts are known from the work of E. B. Maxted and A. Marsden reported in J. Chem. Soc. (1940) pages 469-474 to tend to be deactivated by copper. However the alloying of copper with palladium deposited on carbon in the respective weight ratio of less than 0.5:1.0 substantially enhances the catalytic activity of that palladium reduction catalyst especially the selective reduction of formylbenzoic acid impurities in crude phthalic acid products.

    Abstract translation: 作为还原催化剂的铂族元素贵金属从E.B.Maxted和A.Marsden的着作中已知。 Soc。 （1940）页469-474倾向于被铜去活。 然而，铜与钯沉积在碳上的重量比小于0.5:1.0的合金化实质上提高了该钯还原催化剂的催化活性，特别是粗制邻苯二甲酸产物中甲酰基苯甲酸杂质的选择性还原。

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