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    62.
    发明专利
    未知

    公开(公告)号：BR8108411A

    公开(公告)日：1982-10-13

    申请号：BR8108411

    申请日：1981-12-28

    Applicant: STANDARD OIL CO

    Inventor： BLUM PATRICIA RAE ,  MILBERGER ERNEST CARL ,  BREMER NOEL JEROME ,  DRIA DENNIS EDWARD

    IPC: C07D307/60 ,  B01J23/22 ,  B01J27/18 ,  B01J27/198 ,  C01B25/37 ,  C01B25/45 ,  C07B61/00 ,  C07C51/215 ,  C07C51/25

    Abstract: A process for the preparation of oxidation catalysts containing mixed oxides of vanadium and phosphorus comprises… a) introducing a pentavalent vanadium-containing compound into a liquid medium capable of reducing the valence state of said vanadium;… b) effecting reduction of at least a portion of said vanadium to a valence state of approximately +4;… c) adding a mixed phosphorus component comprising orthophosphoric acid and pyrophosphoric acid to said medium prior to or subsequent to effecting said reduction to form a catalyst precursor;… d) recovering the catalyst precursor;… e) drying the catalyst precursor;… f) calcining the catalyst precursor;…… Improved results are obtained by the use as the mixed phosphorus of component one containing orthophosphoric and pyrophosphoric acid. … The catalyst are useful in the oxidation of C4 hydrocarbons to maleic anhydride.

    66.
    发明专利
    未知

    公开(公告)号：NO143171C

    公开(公告)日：1980-12-29

    申请号：NO184873

    申请日：1973-05-04

    Applicant: STANDARD OIL CO OHIO

    Inventor： MILBERGER ERNEST CARL ,  DOLHYJ SERGE ROMAN

    IPC: B01J23/28 ,  B01J23/30 ,  B01J23/88 ,  C07C51/23 ,  C07C51/25 ,  C07C51/31 ,  C07C57/145 ,  C07D307/60

    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.

    70.
    发明专利
    未知

    公开(公告)号：CH599093A5

    公开(公告)日：1978-05-12

    申请号：CH777975

    申请日：1975-06-16

    Applicant: STANDARD OIL CO

    Inventor： DOLHYI SERGE ROMAN ,  MILBERGER ERNEST CARL

    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

    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.

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