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公开(公告)号：DE59601687D1
公开(公告)日：1999-05-27
申请号：DE59601687
申请日：1996-01-19
Applicant: BASF AG
Inventor： HEINEKE DANIEL DR , SCHNEIDER HEINZ-WALTER DR , THOME ALFRED DR
Abstract: The prodn. of a hydrogenation catalyst comprises the redn. of Pt in an oxidn. state of not less than 2 to Pt in an oxidn. state of zero. The process is carried out in aq. medium in the presence of carbon-contg. support, opt. after partial poisoning with S, As, Te or Sb cpds., using an ammonium or phosphonium salt of formula (XR4)nY (I) as the reducing agent, X = N or P, R = H, 1-18C alkyl, 5-10C cycloalkyl, Ph or Ph-substd. 1-4C alkyl (opt. with Ph gps. substd. with 1-3 halogen, nitro, amino or 1-6C alkyl gps.,) R may be the same or different, but not all H if X = P, n = 1-3, Y = organic anion. Also claimed is (i) a hydrogenation catalyst obtd. by this process, (ii) a process for the prodn. of hydroxylammonium salts by redn. of NO with hydrogen in the presence of this catalyst, (iii) a process for the regeneration of a Pt-based hydrogenation catalyst by the known method, using a cpd. (I) as reducing agent in the redn. of Pt to Pt .
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公开(公告)号：DE59001883D1
公开(公告)日：1993-08-05
申请号：DE59001883
申请日：1990-07-20
Applicant: BASF AG
Inventor： THOME ALFRED DR , BETLEFF WERNER DR
Abstract: Octadienols are prepared by reacting 1,3-butadiene with water in the presence of a catalyst system comprising a palladium compound, a triorganophosphorus compound and carbon dioxide and in the additional presence of a triorganophosphine oxide.
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公开(公告)号：DE19544403A1
公开(公告)日：1997-06-05
申请号：DE19544403
申请日：1995-11-29
Applicant: BASF AG
Inventor： HEINEKE DANIEL DR , ELLER KARSTEN DR , SCHNEIDER HEINZ-WALTER DR , THOME ALFRED DR
IPC: C01B21/14 , B01J21/18 , B01J23/42 , B01J27/08 , B01J31/30 , B01J31/40 , B01J35/10 , B01J37/04 , C07B61/00 , C07F7/00 , C07F7/28 , B01J23/96
Abstract: Novel carbon-containing carrier is obtained by reacting a carbon-containing carrier with a Ti or Zr alkoxide, halide or alkoxide-halide of formula M(OR)mXn (where, M=Ti; X=Cl or Br; R=1-20C alkyl; and m and n =0, 1, 2, 3 or 4, with m+n =4). Also claimed are: (a) preparation of a hydrogenation catalyst by reductive pptn. of Pt from an aq. medium onto the above carrier, opt. followed by partial poisoning with an S-, As-, Te-, or Sb-contg. cpd.; (b) the catalyst obtained in (a) above; (c) use of the hydrogenation catalyst (b) in the prepn. of hydroxy-ammonium salts, esp. by reduction of N monoxide with hydrogen; and (d) regeneration by known methods of the Pt-contg. hydrogenation catalyst.
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公开(公告)号：DE4223363A1
公开(公告)日：1993-02-04
申请号：DE4223363
申请日：1992-07-16
Applicant: BASF AG
Inventor： THOME ALFRED DR , ROEPER MICHAEL DR , STEEGMUELLER FRANZ-JOSEF
IPC: C07C29/80
Abstract: Distillative work-up of telomer mixts. (I) from the transition metal complex-catalysed telomerisation of 1,3-butadiene with water is effected by passing the mixt. (I) through the distn. appts. against a countercurrent of water vapour. In more detail, an inert gas is also passed through the appts., and distn. is pref. carried out at below 200 mbar in a thin-film evaporator; the condensate is sepd. into organic and aq. phases, then the aq. phase is superheated and the superheated vapour is recycled through the appts. as a countercurrent to (I); the bottom prod. from distn. is returned to the telomerisation reactor. USE/ADVANTAGE - Provides an economical process for working up mixts. (I), esp. to separate the octadienols obd. by telomerisation of butadiene with water in the presence of Pd/phosphine complex catalysts; passing steam through the distn. appts. as above results in a marked improvement in the efficiency of sep., together with a higher throughput under relatively mild conditions and minimal prodn. of high-boiling ethers, without reducing the activity of the catalyst.
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公开(公告)号：DE19536777C1
公开(公告)日：1997-05-15
申请号：DE19536777
申请日：1995-10-04
Applicant: BASF AG
Inventor： HEINEKE DANIEL DR , RIEKER CHRISTOPHER WILLIAM , OOSTVOGELS JOZEF , POSTELMANS DANY DR , SCHNEIDER HEINZ-WALTER DR , THOME ALFRED DR , ACHHAMMER GUENTHER DR
Abstract: The invention relates to a hydrogenation catalyst by the reduction from platinum in the stage of oxidation of +4 (Pt (IV)) with a selective reducing agent in an acidic aqueous medium in the presence of a carbon-containing carrier to platinum in the stage of oxidation +2 (Pt (II)), subsequent poisoning of the platinum thus obtained with a sulphur-containing selective reducing agent, and subsequent reduction of the platinum thus partially poisoned to form metallic platinum (Pt(0)) and subsequent processing as known per se in that (a) Pt (II) is partially poisoned with a sulphur-containing selective reducing agent, wherein the sulphur-containing selective reduction agent is used in an amount which corresponds to from 15 to 70 mol % of the amount of the sulphur-containing selective reducing agent which might be needed to reduce Pt(IV) to Pt (II), provided that the amount of Pt (IV) corresponds to the amount of Pt (II) used and to be poisoned, and subsequently the partially poisoned Pt (II) is reduced with an alkali metal formate to Pt (0); or (b) platinum in the stage of oxidation of greater than +2 is partially poisoned and subsequently or simultaneously reduced with an alkali metal formate to Pt (0). The invention also relates to a hydrogenation catalyst, use of the hydrogenation catalyst for preparing hydroxylammonium salts, a process for the preparation of hydroxylammonium salts, and a process for regenerating platinum-containing hydrogenation catalysts.
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Patent Agency Ranking
公开(公告)号：DE19502580A1
公开(公告)日：1996-08-01
申请号：DE19502580
申请日：1995-01-27
Applicant: BASF AG
Inventor： HEINEKE DANIEL DR , SCHNEIDER HEINZ-WALTER DR , THOME ALFRED DR
Abstract: The prodn. of a hydrogenation catalyst comprises the redn. of Pt in an oxidn. state of not less than 2 to Pt in an oxidn. state of zero. The process is carried out in aq. medium in the presence of carbon-contg. support, opt. after partial poisoning with S, As, Te or Sb cpds., using an ammonium or phosphonium salt of formula (XR4)nY (I) as the reducing agent, X = N or P, R = H, 1-18C alkyl, 5-10C cycloalkyl, Ph or Ph-substd. 1-4C alkyl (opt. with Ph gps. substd. with 1-3 halogen, nitro, amino or 1-6C alkyl gps.,) R may be the same or different, but not all H if X = P, n = 1-3, Y = organic anion. Also claimed is (i) a hydrogenation catalyst obtd. by this process, (ii) a process for the prodn. of hydroxylammonium salts by redn. of NO with hydrogen in the presence of this catalyst, (iii) a process for the regeneration of a Pt-based hydrogenation catalyst by the known method, using a cpd. (I) as reducing agent in the redn. of Pt to Pt .
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公开(公告)号：DE3925217A1
公开(公告)日：1991-01-31
申请号：DE3925217
申请日：1989-07-29
Applicant: BASF AG
Inventor： THOME ALFRED DR , BERTLEFF WERNER DR
Abstract: Octadienols are prepared by reacting 1,3-butadiene with water in the presence of a catalyst system comprising a palladium compound, a triorganophosphorus compound and carbon dioxide and in the additional presence of a triorganophosphine oxide.
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公开(公告)号：DE19614153A1
公开(公告)日：1997-10-16
申请号：DE19614153
申请日：1996-04-10
Applicant: BASF AG
Abstract: The invention concerns the manufacture of a hydrogenation catalyst by the reduction of platinum from an oxidation state of not less than two with a reducing agent in an aqueous medium in the presence of a carbon-containing support following partial poisoning, the method using a compound of general formula (I) in which X, Y and Z, which may be the same or different, are hydrogen, C1-C18 alkyl, C5-C10 cycloalkyl, halogen, hydroxyl, C1-C6 alkoxy or-NR'R'', whereby R, R' and R'', which may by the same or different, are hydrogen, C1-C18 alkyl or C5-C10 cycloalkyl. The invention also concerns a hydrogenation catalyst manufactured by this method, its use in the production of hydroxylammonium salts, a method of producing hydroxylammonium salts and a method of regenerating platinum-based hydrogenation catalysts of this kind.
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公开(公告)号：DE59301714D1
公开(公告)日：1996-04-04
申请号：DE59301714
申请日：1993-08-12
Applicant: BASF AG
Inventor： THOME ALFRED DR , ROEPER MICHAEL PROF DR , KNEUPER HEINZ-JOSEF DR
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公开(公告)号：ES2057289T3
公开(公告)日：1994-10-16
申请号：ES90113916
申请日：1990-07-20
Applicant: BASF AG
Inventor： THOME ALFRED DR , BETLEFF WERNER DR
Abstract: Octadienols are prepared by reacting 1,3-butadiene with water in the presence of a catalyst system comprising a palladium compound, a triorganophosphorus compound and carbon dioxide and in the additional presence of a triorganophosphine oxide.
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