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公开(公告)号:AU8532001A
公开(公告)日:2002-03-13
申请号:AU8532001
申请日:2001-08-27
Applicant: STANDARD OIL CO
Inventor: HEPFER ROBERT P , MILLER CRAIG T , ATTIG THOMAS G , NORENBERG GREGORY A , BUDGE JOHN R
IPC: C07D307/33 , C07B61/00 , C07C29/149 , C07C31/20 , C07C51/36 , C07C55/10
Abstract: In the process for the conversion of maleic acid to gamma-butyrolactone, 1.4-butanediol and/or tetrahydrofuran, a feedstream comprising maleic acid is hydrogenated in a first hydrogenation zone to produce a reaction product comprising succinic acid and unreacted hydrogen which is then supplied to a second hydrogenation zone, where succinic acid is converted to 1,4-butanediol, the temperatures of the feedstream comprising maleic acid and the first hydrogenation zone are controlled such that the temperature of maleic acid in the feedstream and the first hydrogenation zone does not exceed about 130° C., thereby minimizing the corrosive effects of the maleic acid and prolonging reactor life and improving overall process economics.
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公开(公告)号:RO116191B1
公开(公告)日:2000-11-30
申请号:RO9500436
申请日:1995-02-27
Applicant: STANDARD OIL CO
Inventor: BLACHMAN MARC W , CESA MARK C , ATTIG THOMAS G
IPC: C07C5/03 , C07C253/34 , C07C255/03
Abstract: The invention relates to a process for purifying the acetonitrile. According to the invention, the process comprises the preparation of acetonitrile with impurities consisting of water, unsaturated nitriles and other substances having functional groups C=C and C=O at a temperature of at most 80°C, with an oxidising agent or a solid basic reactant, and afterwards the pre-treated acetonitrile is passed through a series of adsorbent beds in order to remove the resulting products and other impurities from the purified acetonitrile which is recovered.
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公开(公告)号:MX9504147A
公开(公告)日:1997-01-31
申请号:MX9504147
申请日:1995-09-29
Applicant: STANDARD OIL CO
Inventor: BUDGE JOHN R , ATTIG THOMAS G , PEDERSEN S ERIK
IPC: B01J23/656 , B01J23/68 , C07B61/00 , C07C27/04 , C07C29/149 , C07C29/17 , C07C31/20 , C07D307/08 , C07C31/12 , C07B31/00
Abstract: El ácido maléico, el anhídrido maléico u otros precursores hidrogenables pueden hidrogenarse catalíticamente para dar 1,4-butanodiol y tetrahidrofurano. Se ha descubierto que se logran altos rendimientos de 1,4-butanodiol cuando los catalizadores de hidrogenacion comprenden paladio, plata y renio sobre un soporte de carbon, y se preparan mediante los pasos de: (i) impregnar un soporte de carbon con una fuente de paladio, plata y renio, en donde la fuente de paladio, plata y renio es por lo menos una solucion; (ii) después de cada etapa de impregnacion, secar el soporte de carbon impregnado para retirar el solvente; (iii) calentar el soporte de carbon impregnado a una temperatura de entre aproximadamente 100 degree C y 350 degree C, bajo condiciones reductoras. El paladio en el catalizador está presente en forma de cristalitos que tienen un tamaño de partículas menor a 10 nm.
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公开(公告)号:BG99497A
公开(公告)日:1996-09-30
申请号:BG9949795
申请日:1995-03-13
Applicant: STANDARD OIL CO
Inventor: BLACHMAN MARC W , CESA MARK C , ATTIG THOMAS G
IPC: C07C253/34 , C07C255/03
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公开(公告)号:ZA95629B
公开(公告)日:1995-10-05
申请号:ZA95629
申请日:1995-01-26
Applicant: STANDARD OIL CO OHIO
Inventor: BLACHMAN MARC W , CESA MARK C , ATTIG THOMAS G
IPC: B01D20060101 , C07B63/00 , C07C20060101 , C07C253/04 , C07C253/34 , C07C255/03 , B01D , C07C
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公开(公告)号:AU772779B2
公开(公告)日:2004-05-06
申请号:AU4349899
申请日:1999-08-09
Applicant: STANDARD OIL CO
Inventor: BUDGE JOHN R , ATTIG THOMAS G , DUBBERT ROBERT A
IPC: B01J23/68 , B01J37/02 , C07C29/153
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公开(公告)号:ES2131269T3
公开(公告)日:1999-07-16
申请号:ES95300458
申请日:1995-01-25
Applicant: STANDARD OIL CO OHIO
Inventor: ATTIG THOMAS G , CESA MARK C , BLACHMAN MARC W
IPC: C07C253/34
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公开(公告)号:AT178878T
公开(公告)日:1999-04-15
申请号:AT95306409
申请日:1995-09-13
Applicant: STANDARD OIL CO OHIO
Inventor: ATTIG THOMAS G , BUDGE JOHN R , PEDERSEN ERIK S
IPC: B01J23/656 , B01J23/68 , C07B61/00 , C07C27/04 , C07C29/149 , C07C29/17 , C07C31/20 , C07D307/08
Abstract: Prodn. of tetrahydrofuran (THF) and 1,4-butanediol (BDO), contg. a major portion of BDO, comprises catalytic hydrogenation of an hydrogenatable precursor in contact with an H2-contg. gas and a carbon-supported Pd, Ag and Re-contg. hydrogenation catalyst prepd. by: i) impregnating the C support with a source of Pd, Ag and Re, in one or more steps, using at least one soln. of the metal sources; ii) drying the impregnated support to remove solvent after each impregnation step; iii) heating the impregnated support at 100-350 deg.C under reducing conditions.
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公开(公告)号:BR9500833A
公开(公告)日:1997-04-29
申请号:BR9500833
申请日:1995-03-07
Applicant: STANDARD OIL CO OHIO
Inventor: BLACHMAN MARC W , CESA MARC C , ATTIG THOMAS G
IPC: C07C255/03
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公开(公告)号:ZA9500629B
公开(公告)日:1995-10-05
申请号:ZA9500629
申请日:1995-01-26
Applicant: STANDARD OIL CO OHIO
Inventor: BLACHMAN MARC W , CESA MARK C , ATTIG THOMAS G
IPC: B01D20060101 , C07B63/00 , C07C20060101 , C07C253/04 , C07C253/34 , C07C255/03 , B01D , C07C
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