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    PURIFICATION OF TEREPHTHALIC ACID
    1.
    发明专利
    PURIFICATION OF TEREPHTHALIC ACID 未知

    公开(公告)号：CA944361A

    公开(公告)日：1974-03-26

    申请号：CA122590

    申请日：1971-09-10

    Applicant: BASF AG

    Inventor： NIENBURG HANS-JUERGEN ,  EISFELD WOLFGANG ,  WACHE HARRO

    IPC: C07C51/487

    Abstract: 1353786 Purification of terephthalic acid BADISCHE ANILIN- & SODA-FABRIK AG 15 Sept 1971 [16 Sept 1970] 42921/71 Heading C2C A process for the purification of terephthalic acid from crude terephthalic acid containing a small amount of 4-carboxybenzaldehyde with or without other impurities comprises heating an aqueous mixture containing from 5 to 45% by weight of crude terephthalic acid and from 0À003 to 3% by weight of formic acid at a temperature of at least 230‹ C. in contact with a noble metal of Group VIII of the Periodic Table as catalyst, and thereafter the aqueous mixture is separated from the catalyst and cooled to cause solid terephthalic acid to separate out.

    2.
    发明专利
    未知

    公开(公告)号：DE59705306D1

    公开(公告)日：2001-12-13

    申请号：DE59705306

    申请日：1997-12-09

    Applicant: BASF AG

    Inventor： FETZER THOMAS ,  DEMUTH DIRK ,  RUETTER HEINZ ,  MENIG HELMUTH ,  RESCH PETER ,  RUPPEL WILHELM ,  WACHE HARRO

    IPC: B01J23/72 ,  C07C45/38 ,  C07C45/39 ,  C07C47/127

    Abstract: PCT No. PCT/EP97/06856 Sec. 371 Date Jun. 16, 1999 Sec. 102(e) Date Jun. 16, 1999 PCT Filed Dec. 23, 1997 PCT Pub. No. WO98/28251 PCT Pub. Date Jul. 2, 1998In a process for preparing carbonyl compounds of the formula where R1 is a hydrogen atom or an alkyl radical having from 1 to 3 carbon atoms, R2 is a hydrogen atom or a radical of the formula where R3 is a hydrogen atom or together with R4 is an oxygen atom, R4 is the radical OR6 or together with R3 is an oxygen atom, R5 is a hydrogen atom, an alkyl radical having from 1 to 8 carbon atoms or a cyclohexyl or cyclopentyl radical and R6 is an alkyl radical having from 1 to 4 carbon atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CHO or -CH2-CH2-O-CH2-CHO, by gas-phase oxidation of methanol or alcohols of the formula where R1 and R5 are as defined above and R7 is a hydrogen atom or a radical OR8 and R8 is a hydrogen atom, an alkyl radical having from 1 to 4 carbon atoms, a cyclohexyl or cyclopentyl radical or a radical for the formula -CH2-CH2-OH or -CH2-CH2-O-CH2-CH2-OH, using an oxygen-containing gas in the presence of copper- and/or silver-containing catalysts and an amount of a phosphorus compound which is volatile under the reaction conditions which is such that the amount of phosphorus (calculated as P) is up to 20 ppm, based on the weight of alcohol used, the phosphorus is introduced within the catalyst bed.

    METHOD FOR PRODUCING CARBONYL COMPOUNDS
    3.
    发明专利
    METHOD FOR PRODUCING CARBONYL COMPOUNDS 未知

    公开(公告)号：CA2274489A1

    公开(公告)日：1998-07-02

    申请号：CA2274489

    申请日：1997-12-09

    Applicant: BASF AG

    Inventor： FETZER THOMAS ,  RUPPEL WILHELM ,  WACHE HARRO ,  DEMUTH DIRK ,  MENIG HELMUTH ,  RUETTER HEINZ ,  RESCH PETER

    IPC: C07B61/00 ,  C07C45/38 ,  C07C45/39 ,  C07C47/127

    Abstract: The invention relates to a method for producing carbonyl compounds of formula (I), in which R1 is a hydrogen atom or alkyl radical with between 1 and 3 C atoms; R2 is a hydrogen atom or a radical of formula (II), in which R3 is a hydrogen atom or, together with R4, an oxygen atom; R4 is the radical OR6 or, together with R3, an oxygen atom; R5 is a hydrogen atom, an alkyl radical with between 1 and 8 C atoms or a cyclohexyl or cyclopentyl radical; and R6 is an alkyl radical with between 1 and 4 C atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CHO or -CH2-CH2-O-CH2-CHO. According to said method, the carbonyl compounds are produced by gas phase oxidation of methanol or alcohols of formula (III), in which R1 and R5 have the meaning assigned above and R7 is a hydrogen atom or an OR8 radical, and R8 is a hydrogen atom, an alkyl radical with between 1 and 4 C atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CH2-OH or -CH2-CH2-O-CH2-CH2-OH, with a gas containing oxygen, in the presence of catalysts containing copper and/or silver, and a phosphorus compound which is volatile under reaction conditions in such a quantity that the amount of phosphorus (calculated as P), in relation to the part by weight of alcohol used, is up to 20 ppm. Said method is characterized in that the quantity of phosphorus is added in at least two parts: a) the first part is added with the gaseous starting mixture before the catalyst bed, and b) at least one other part is added in the catalyst bed.

    6.
    发明专利
    未知

    公开(公告)号：DE59704619D1

    公开(公告)日：2001-10-18

    申请号：DE59704619

    申请日：1997-12-09

    Applicant: BASF AG

    Inventor： FETZER THOMAS ,  DEMUTH DIRK ,  RUETTER HEINZ ,  MENIG HELMUTH ,  RESCH PETER ,  RUPPEL WILHELM ,  WACHE HARRO

    IPC: C07B61/00 ,  C07C45/38 ,  C07C45/39 ,  C07C47/127

    Abstract: PCT No. PCT/EP97/06855 Sec. 371 Date Jun. 16, 1999 Sec. 102(e) Date Jun. 16, 1999 PCT Filed Dec. 9, 1997 PCT Pub. No. WO98/28250 PCT Pub. Date Jul. 2, 1998The present invention relates to a process for the preparation of carbonyl compounds of the formula in which R1 denotes a hydrogen atom or an alkyl radical containing from 1 to 3 carbon atoms, R2 denotes a hydrogen atom or a radical of the formula in which R3 denotes a hydrogen atom or, together with R4, an oxygen atom, R4 denotes the radical OR6 or, together with R3, an oxygen atom, R5 denotes a hydrogen atom or an alkyl radical containing from 1 to 8 carbon atoms or a cyclohexyl or cyclopentyl radical, and R6 denotes an alkyl radical containing from 1 to 4 carbon atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CHO or -CH2-CH2-O-CH2-CHO, by gas-phase oxidation of methanol or alcohols of the formula in which R1 and R5 have the meanings specified above and R7 denotes a hydrogen atom or a radical OR8, and R8 denotes a hydrogen atom, an alkyl radical containing from 1 to 4 carbon atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CH2-OH or -CH2-CH2-O-CH2-CH2-OH, using an oxygen-containing gas in the presence of a (copper and/or silver)-containing catalyst and a phosphorus compound which is volatile under the conditions of the reaction and is present in an amount such that the weight of phosphorus (calculated as P), based on the weight of alcohol used, is not more than 20 ppm, wherein the amount of phosphorus used is divided into at least two portions, of which a) the first portion is added together with the mixture of gaseous starting materials before this reaches the catalyst bed and b) at least one further portion is added within the catalyst bed.

    METHOD FOR PRODUCING CARBONYL COMPOUNDS
    7.
    发明专利
    METHOD FOR PRODUCING CARBONYL COMPOUNDS 未知

    公开(公告)号：CA2274492A1

    公开(公告)日：1998-07-02

    申请号：CA2274492

    申请日：1997-12-09

    Applicant: BASF AG

    Inventor： RESCH PETER ,  RUPPEL WILHELM ,  WACHE HARRO ,  RUETTER HEINZ ,  MENIG HELMUTH ,  FETZER THOMAS ,  DEMUTH DIRK

    IPC: B01J23/72 ,  C07C45/38 ,  C07C45/39 ,  C07C47/127

    Abstract: The invention relates to a method for producing carbonyl compounds of formula (I), in which R1 is a hydrogen atom or an alkyl radical with between 1 and 3 C atoms; R2 is a hydrogen atom or a radical of formula (II) in which R3 is a hydrogen atom or, together with R4, an oxygen atom; R4 is the radical OR6 or, together with R3, an oxygen atom; R5 is a hydrogen atom, an alkyl radical with between 1 and 8 C atoms or a cyclohexyl or cyclopentyl radical; and R6 is an alkyl radical with between 1 and 4 C atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CHO or -CH2-CH2-O-CH2-CHO. According to said method, the carbonyl compounds are produced by gas-phase oxidation of methanol or alcohols of formula (III), in which R1 and R5 have the meaning assigned above and R7 is a hydrogen atom or an OR8 radical, and R8 is a hydrogen atom, an alkyl radical with between 1 and 4 C atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CH2-OH or -CH2-CH2-O-CH2-CH2-OH, with a gas containing oxygen, in the presence of catalysts containing copper and/or silver and a phosphorus compounds which is volatile under reaction conditions, in such a quantity that the quantity of phosphorus (calculated as P) in relation to the part by weight of alcohol used is up to 20 ppm. The method is characterized in that the quantity of phosphorus is added in the catalyst bed.

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