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    OXIDATION CATALYSTS FOR THE SYNTHESIS OF MALEIC ANHYDRIDE
    3.
    发明专利
    OXIDATION CATALYSTS FOR THE SYNTHESIS OF MALEIC ANHYDRIDE 未知

    公开(公告)号：ZA732643B

    公开(公告)日：1974-04-24

    申请号：ZA732643

    申请日：1973-04-17

    Applicant: STANDARD OIL CO

    Inventor： MILBERGER E ,  DOLHYJ S

    IPC: B01J23/28 ,  B01J23/30 ,  B01J23/88 ,  C07C51/23 ,  C07C51/25 ,  C07C51/31 ,  B01J

    Abstract: 1427389 Maleic anhydride STANDARD OIL CO 18 April 1973 [5 May 1972] 18738/73 Heading C2C [Also in Division B1] Maleic anhydride is produced by oxidizing 1,3-butadiene, n-butenes, crotonaldehyde, furan or a mixture thereof with molecular oxygen at 250-600‹ C. using a catalyst comprising antimony, molybdenum, oxygen, vanadium and/or iron and, optionally, tungsten, magnesium, aluminium and/or nickel in the atomic proportions Sb a Mo b V c Fed Z e O x wherein: Z=W, Mg, Al and/or Ni; a=1-9; b=1-10; c, d, e=0-1 but c + d is greater than zero; and x is a number to satisfy valency requirements. The reaction pressure is usually superatmospheric but may be atmospheric or subatmospheric with a contact time of 1 to 50 sees. The feed may contain diluents, e.g. steam, nitrogen and carbon oxides. An air to reactant ratio of 12 to 20=1 may be employed. The examples describe the use of butadiene as feed to give a maleic anhydride product containing some acrylic acid.

    5.
    发明专利
    未知

    公开(公告)号：BR7503800A

    公开(公告)日：1976-07-06

    申请号：BR7504888

    申请日：1975-06-17

    Applicant: STANDARD OIL CO

    Inventor： DOLHYJ S ,  MILBERGER E

    IPC: B01J23/00 ,  B01J23/30 ,  B01J23/34 ,  B01J23/88 ,  B01J23/887 ,  B01J23/888 ,  C07B61/00 ,  C07C51/00 ,  C07C51/25 ,  C07C57/055 ,  C07C67/00 ,  C07C57/04 ,  C07C51/26

    Abstract: Coated catalysts having an inert support material with an outer surface and a coating of active catalyst containing tungsten, vanadium and molybdenum plus optionally one or more of Fe, Mn, Cu, Sn, Sb, Cr, Ce, U, Co, Ni, Zn, Mg or mixture thereof have been found to be especially effective catalysts for the production of unsaturated acids from the corresponding unsaturated aldehydes, for example, acrolein is oxidized to acrylic acid using these catalysts. The catalysts give a very low exotherm, very high single pass yields of the desired acid and reduce the undesirable by-products.

    6.
    发明专利
    未知

    公开(公告)号：BR7303216D0

    公开(公告)日：1974-07-18

    申请号：BR321673

    申请日：1973-05-04

    Applicant: STANDARD OIL CO

    Inventor： MILBERGER E ,  DOLHYJ S

    IPC: B01J23/28 ,  B01J23/30 ,  B01J23/88 ,  C07C51/23 ,  C07C51/25 ,  C07C51/31 ,  C07C57/14 ,  B01J11/00

    Abstract: 1427389 Maleic anhydride STANDARD OIL CO 18 April 1973 [5 May 1972] 18738/73 Heading C2C [Also in Division B1] Maleic anhydride is produced by oxidizing 1,3-butadiene, n-butenes, crotonaldehyde, furan or a mixture thereof with molecular oxygen at 250-600‹ C. using a catalyst comprising antimony, molybdenum, oxygen, vanadium and/or iron and, optionally, tungsten, magnesium, aluminium and/or nickel in the atomic proportions Sb a Mo b V c Fed Z e O x wherein: Z=W, Mg, Al and/or Ni; a=1-9; b=1-10; c, d, e=0-1 but c + d is greater than zero; and x is a number to satisfy valency requirements. The reaction pressure is usually superatmospheric but may be atmospheric or subatmospheric with a contact time of 1 to 50 sees. The feed may contain diluents, e.g. steam, nitrogen and carbon oxides. An air to reactant ratio of 12 to 20=1 may be employed. The examples describe the use of butadiene as feed to give a maleic anhydride product containing some acrylic acid.

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