DE3477350D1 - Pd/re hydrogenation catalyst and process for making tetrahydrofuran and 1,4-butanediol - Google Patents

Pd/re hydrogenation catalyst and process for making tetrahydrofuran and 1,4-butanediol

Info

Publication number
DE3477350D1
DE3477350D1 DE8484309048T DE3477350T DE3477350D1 DE 3477350 D1 DE3477350 D1 DE 3477350D1 DE 8484309048 T DE8484309048 T DE 8484309048T DE 3477350 T DE3477350 T DE 3477350T DE 3477350 D1 DE3477350 D1 DE 3477350D1
Authority
DE
Germany
Prior art keywords
butanediol
hydrogenation catalyst
making
catalyst
tetrahydrofuran
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8484309048T
Other languages
English (en)
Inventor
Melinda Ann Mabry
William W Prichard
Stanislaw Bogdan Ziemecki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24254195&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3477350(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Application granted granted Critical
Publication of DE3477350D1 publication Critical patent/DE3477350D1/de
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/04—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
    • C07D307/06—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms
    • C07D307/08—Preparation of tetrahydrofuran
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/656—Manganese, technetium or rhenium
    • B01J23/6567—Rhenium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/17—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrogenation of carbon-to-carbon double or triple bonds
    • C07C29/177—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrogenation of carbon-to-carbon double or triple bonds with simultaneous reduction of a carboxy group

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Furan Compounds (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Tea And Coffee (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Fats And Perfumes (AREA)
DE8484309048T 1983-12-22 1984-12-21 Pd/re hydrogenation catalyst and process for making tetrahydrofuran and 1,4-butanediol Expired DE3477350D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/564,372 US4550185A (en) 1983-12-22 1983-12-22 Process for making tetrahydrofuran and 1,4-butanediol using Pd/Re hydrogenation catalyst

Publications (1)

Publication Number Publication Date
DE3477350D1 true DE3477350D1 (en) 1989-04-27

Family

ID=24254195

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484309048T Expired DE3477350D1 (en) 1983-12-22 1984-12-21 Pd/re hydrogenation catalyst and process for making tetrahydrofuran and 1,4-butanediol

Country Status (13)

Country Link
US (1) US4550185A (de)
EP (1) EP0147219B1 (de)
AT (1) ATE41609T1 (de)
AU (3) AU3708084A (de)
BR (1) BR8406586A (de)
CA (1) CA1268752A (de)
DE (1) DE3477350D1 (de)
HK (1) HK81589A (de)
MY (1) MY100910A (de)
NO (1) NO159641C (de)
NZ (1) NZ210651A (de)
SG (1) SG44989G (de)
TR (1) TR24399A (de)

Families Citing this family (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659686A (en) * 1983-12-22 1987-04-21 E. I. Du Pont De Nemours And Company Method for treating carbon supports for hydrogenation catalysts
US4609636A (en) * 1983-12-22 1986-09-02 E. I. Du Pont De Nemours And Company Pd/Re hydrogenation catalyst for making tetrahydrofuran and 1,4-butanediol
US4656297A (en) * 1985-03-11 1987-04-07 Amoco Corporation Coproduction of butanediol and tetrahydrofuran and their subsequent separation from the reaction product mixture
GB8509530D0 (en) * 1985-04-13 1985-05-15 Bp Chem Int Ltd Hydrogenation of carboxylic acids
US4782167A (en) * 1987-01-23 1988-11-01 E. I. Du Pont De Nemours And Company Process for preparing butyrolactones and butanediols
US4772729A (en) * 1987-01-23 1988-09-20 E. I. Du Pont De Nemours And Company Hydrogenation of citric acid and substituted citric acids to 3-substituted tetrahydrofuran, 3- and 4-substituted butyrolactones and mixtures thereof
US5149680A (en) * 1987-03-31 1992-09-22 The British Petroleum Company P.L.C. Platinum group metal alloy catalysts for hydrogenation of carboxylic acids and their anhydrides to alcohols and/or esters
US4795733A (en) * 1987-11-27 1989-01-03 Gaf Corporation Hydrogenation catalyst and process for its preparation
US4797382A (en) * 1987-11-27 1989-01-10 Gaf Corporation Hydrogenation catalyst and process for preparing the catalyst
GB8808831D0 (en) * 1988-04-14 1988-05-18 Shell Int Research Process for preparation of alkanediols
GB8811009D0 (en) * 1988-05-10 1988-06-15 Bp Chem Int Ltd Chemical process
JP2666151B2 (ja) * 1988-12-14 1997-10-22 東燃株式会社 １，４−ブタンジオールの製造法
DE4009029A1 (de) * 1990-03-21 1991-09-26 Basf Ag Verfahren zur herstellung von 1,4-butandiol
EP0541648A1 (de) * 1990-07-27 1993-05-19 E.I. Du Pont De Nemours And Company Hydrierungskatalysator und verfahren zur herstellung von tetrahydrofuran
DE4138792A1 (de) * 1991-11-26 1993-05-27 Basf Ag Verfahren zur herstellung von 1,2-propylenglykol
DE4139607A1 (de) * 1991-11-30 1993-06-03 Basf Ag Verfahren zur herstellung von n-substituierten lactamen
DE4243722A1 (de) * 1992-12-23 1994-06-30 Basf Ag Verfahren zur Herstellung von Polyetherglykolen
US5473086A (en) * 1995-01-17 1995-12-05 The Standard Oil Co. Process for the hydrogenation of maleic acid to 1,4-butanediol
US5478952A (en) * 1995-03-03 1995-12-26 E. I. Du Pont De Nemours And Company Ru,Re/carbon catalyst for hydrogenation in aqueous solution
DE19520258A1 (de) * 1995-06-02 1996-12-05 Bayer Ag Verfahren zur Herstellung von 2-Pyrrolidonen
US5698749A (en) * 1995-09-06 1997-12-16 The Standard Oil Company Catalysts for the hydrogenation of aqueous maleic acid to 1,4-butanediol
US6225477B1 (en) * 1997-02-05 2001-05-01 E. I. Du Pont De Nemours And Company Process for regeneration of carbon-supported, rhenium-containing catalysts
US6486367B1 (en) 1997-12-01 2002-11-26 The Standard Oil Company Process for the hydrogenation of maleic acid to 1,4-butanediol
US5883266A (en) * 1998-01-16 1999-03-16 Battelle Memorial Institute Hydrogenated 5-carbon compound and method of making
US6008384A (en) * 1998-03-03 1999-12-28 E. I. Du Pont De Nemours And Company Method and Ru,Re,Sn/carbon catalyst for hydrogenation in aqueous solution
CN1114488C (zh) * 1999-08-30 2003-07-16 标准石油公司 用于马来酸加氢制1，4－丁二醇的改进的催化剂
US7019155B2 (en) * 2001-11-13 2006-03-28 Invista North America S.A.R.L. Hydrogenation of tetrahydroxybutane to tetrahydrofuran
US6593481B1 (en) * 2001-11-13 2003-07-15 E. I. Du Pont De Nemours And Company Hydrogenation of 3,4-tetrahydrofurandiol to tetrahydrofuran
DE10357718A1 (de) 2003-12-09 2005-07-21 Basf Ag Verfahren zur Herstellung von Tricyclodecandialdehyd
DE102004007499A1 (de) 2004-02-13 2005-09-01 Basf Ag Verfahren zur Herstellung optisch aktiver Alkohole oder Carbonsäuren
US7935834B2 (en) * 2004-07-01 2011-05-03 Isp Investments Inc. Catalysts for maleic acid hydrogenation to 1,4-butanediol
ES2764410T3 (es) 2007-08-17 2020-06-03 Basf Se Nuevo productor de ácido succínico microbiano
US8304586B2 (en) 2010-02-02 2012-11-06 Celanese International Corporation Process for purifying ethanol
US8309772B2 (en) 2008-07-31 2012-11-13 Celanese International Corporation Tunable catalyst gas phase hydrogenation of carboxylic acids
US8637714B2 (en) 2008-07-31 2014-01-28 Celanese International Corporation Process for producing ethanol over catalysts containing platinum and palladium
US8501652B2 (en) 2008-07-31 2013-08-06 Celanese International Corporation Catalysts for making ethanol from acetic acid
US8471075B2 (en) * 2008-07-31 2013-06-25 Celanese International Corporation Processes for making ethanol from acetic acid
US8680317B2 (en) 2008-07-31 2014-03-25 Celanese International Corporation Processes for making ethyl acetate from acetic acid
US7863489B2 (en) * 2008-07-31 2011-01-04 Celanese International Corporation Direct and selective production of ethanol from acetic acid utilizing a platinum/tin catalyst
US8338650B2 (en) 2008-07-31 2012-12-25 Celanese International Corporation Palladium catalysts for making ethanol from acetic acid
US8546622B2 (en) 2008-07-31 2013-10-01 Celanese International Corporation Process for making ethanol from acetic acid using acidic catalysts
US7608744B1 (en) 2008-07-31 2009-10-27 Celanese International Corporation Ethanol production from acetic acid utilizing a cobalt catalyst
US8309773B2 (en) 2010-02-02 2012-11-13 Calanese International Corporation Process for recovering ethanol
US7816565B2 (en) * 2008-07-31 2010-10-19 Celanese International Corporation Direct and selective production of acetaldehyde from acetic acid utilizing a supported metal catalyst
EP2204443B1 (de) * 2008-12-23 2015-11-25 Basf Se Bakterienzellen mit Formatdehydrogenaseaktivität zur Herstellung von Bernsteinsäure
EP2202294B1 (de) * 2008-12-23 2015-10-21 Basf Se Bakterienzellen mit Glyoxylat-Shunt zur Herstellung von Bernsteinsäure
US8178715B2 (en) * 2008-12-31 2012-05-15 Celanese International Corporation Integrated process for the production of vinyl acetate from acetic acid via acetaldehyde
US8673598B2 (en) 2009-02-16 2014-03-18 Basf Se Microbial succinic acid producers and purification of succinic acid
US8450535B2 (en) 2009-07-20 2013-05-28 Celanese International Corporation Ethanol production from acetic acid utilizing a cobalt catalyst
AU2010313700A1 (en) * 2009-10-26 2012-05-17 Celanese International Corporation Catalysts for making ethyl acetate from acetic acid
US8680321B2 (en) * 2009-10-26 2014-03-25 Celanese International Corporation Processes for making ethanol from acetic acid using bimetallic catalysts
US8710277B2 (en) 2009-10-26 2014-04-29 Celanese International Corporation Process for making diethyl ether from acetic acid
US8211821B2 (en) 2010-02-01 2012-07-03 Celanese International Corporation Processes for making tin-containing catalysts
US8747492B2 (en) 2010-02-02 2014-06-10 Celanese International Corporation Ethanol/fuel blends for use as motor fuels
US8668750B2 (en) 2010-02-02 2014-03-11 Celanese International Corporation Denatured fuel ethanol compositions for blending with gasoline or diesel fuel for use as motor fuels
US8858659B2 (en) 2010-02-02 2014-10-14 Celanese International Corporation Processes for producing denatured ethanol
TW201136660A (en) 2010-02-02 2011-11-01 Celanese Int Corp Catalyst supports having crystalline support modifiers
US8932372B2 (en) 2010-02-02 2015-01-13 Celanese International Corporation Integrated process for producing alcohols from a mixed acid feed
US8460405B2 (en) 2010-02-02 2013-06-11 Celanese International Corporation Ethanol compositions
US8222466B2 (en) 2010-02-02 2012-07-17 Celanese International Corporation Process for producing a water stream from ethanol production
US8541633B2 (en) 2010-02-02 2013-09-24 Celanese International Corporation Processes for producing anhydrous ethanol compositions
US8680343B2 (en) 2010-02-02 2014-03-25 Celanese International Corporation Process for purifying ethanol
US8344186B2 (en) 2010-02-02 2013-01-01 Celanese International Corporation Processes for producing ethanol from acetaldehyde
US8314272B2 (en) 2010-02-02 2012-11-20 Celanese International Corporation Process for recovering ethanol with vapor separation
US8728179B2 (en) 2010-02-02 2014-05-20 Celanese International Corporation Ethanol compositions
US8569551B2 (en) 2010-05-07 2013-10-29 Celanese International Corporation Alcohol production process integrating acetic acid feed stream comprising water from carbonylation process
US8754267B2 (en) 2010-05-07 2014-06-17 Celanese International Corporation Process for separating acetaldehyde from ethanol-containing mixtures
US8680342B2 (en) 2010-05-07 2014-03-25 Celanese International Corporation Process for recovering alcohol produced by hydrogenating an acetic acid feed stream comprising water
US8350098B2 (en) 2011-04-04 2013-01-08 Celanese International Corporation Ethanol production from acetic acid utilizing a molybdenum carbide catalyst
AU2012298850B2 (en) * 2011-08-22 2015-12-10 Suganit Systems, Inc. Production of bio-butanol and related products
US8658843B2 (en) 2011-10-06 2014-02-25 Celanese International Corporation Hydrogenation catalysts prepared from polyoxometalate precursors and process for using same to produce ethanol while minimizing diethyl ether formation
US8536382B2 (en) 2011-10-06 2013-09-17 Celanese International Corporation Processes for hydrogenating alkanoic acids using catalyst comprising tungsten
US8703868B2 (en) 2011-11-28 2014-04-22 Celanese International Corporation Integrated process for producing polyvinyl alcohol or a copolymer thereof and ethanol
US8575406B2 (en) 2011-12-22 2013-11-05 Celanese International Corporation Catalysts having promoter metals and process for producing ethanol
US9000234B2 (en) 2011-12-22 2015-04-07 Celanese International Corporation Calcination of modified support to prepare hydrogenation catalysts
US9233899B2 (en) 2011-12-22 2016-01-12 Celanese International Corporation Hydrogenation catalysts having an amorphous support
US9079172B2 (en) 2012-03-13 2015-07-14 Celanese International Corporation Promoters for cobalt-tin catalysts for reducing alkanoic acids
US8907142B2 (en) 2011-12-29 2014-12-09 Celanese International Corporation Process for promoting catalyst activity for ethyl acetate conversion
US9333496B2 (en) 2012-02-29 2016-05-10 Celanese International Corporation Cobalt/tin catalyst for producing ethanol
US8455702B1 (en) 2011-12-29 2013-06-04 Celanese International Corporation Cobalt and tin catalysts for producing ethanol
US9024086B2 (en) 2012-01-06 2015-05-05 Celanese International Corporation Hydrogenation catalysts with acidic sites
CN104039448B (zh) 2012-01-06 2016-11-16 国际人造丝公司 具有钴改性载体的加氢催化剂
US8981164B2 (en) 2012-01-06 2015-03-17 Celanese International Corporation Cobalt and tin hydrogenation catalysts
US8802588B2 (en) 2012-01-23 2014-08-12 Celanese International Corporation Bismuth catalyst composition and process for manufacturing ethanol mixture
US9050585B2 (en) 2012-02-10 2015-06-09 Celanese International Corporation Chemisorption of ethyl acetate during hydrogenation of acetic acid to ethanol
US9126194B2 (en) 2012-02-29 2015-09-08 Celanese International Corporation Catalyst having support containing tin and process for manufacturing ethanol
US8927786B2 (en) 2012-03-13 2015-01-06 Celanese International Corporation Ethanol manufacturing process over catalyst having improved radial crush strength
US9073042B2 (en) 2012-03-14 2015-07-07 Celanese International Corporation Acetic acid hydrogenation over a group VIII metal calcined catalyst having a secondary promoter
US8536383B1 (en) 2012-03-14 2013-09-17 Celanese International Corporation Rhodium/tin catalysts and processes for producing ethanol
US8772553B2 (en) 2012-10-26 2014-07-08 Celanese International Corporation Hydrogenation reaction conditions for producing ethanol
GB201318175D0 (en) 2013-10-14 2013-11-27 Johnson Matthey Davy Technologies Ltd Process
CA2969160A1 (en) * 2014-12-04 2016-06-09 Shell Internationale Research Maatschappij B.V. Process for the production of 1,4-butanediol and tetrahydrofuran from furan
WO2016154599A1 (en) 2015-03-26 2016-09-29 North Carolina State University Palladium, rhenium and alumina catalysts for the selective hydrogenation of carbonyls, their synthesis, and methods of using the same
WO2018116081A1 (en) * 2016-12-20 2018-06-28 Sabic Global Technologies B.V. Utilization of normal carbon 4 (nc4) recycle stream for secondary and tertiary products
KR102287646B1 (ko) * 2018-12-31 2021-08-06 한화솔루션 주식회사 탄소 기반의 귀금속-전이금속 복합촉매 및 이의 제조방법

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113138A (en) * 1961-12-20 1963-12-03 Fmc Corp Preparation of butyrolactone
US3370067A (en) * 1967-04-07 1968-02-20 Shell Oil Co Hydrogenolysis of butyrolactone and gamma-valerolactone to the corresponding cyclic ethers
US3759841A (en) * 1971-05-10 1973-09-18 Universal Oil Prod Co P metal rhenium or group iv-a metal method of manufacturing a supported catalyst containing platinum grou
US3957827A (en) * 1974-10-17 1976-05-18 Sun Ventures, Inc. Hydrogenation of carboxylic acid anhydrides to lactones or esters by homogeneous catalysis
DE2519817A1 (de) * 1975-05-03 1976-11-11 Hoechst Ag Verfahren zur herstellung von butandiol-(1.4)
DE2605107C3 (de) * 1976-02-10 1983-12-29 Chemische Werke Hüls AG, 4370 Marl Verfahren zur Herstellung von Diolen durch katalytische Hydrierung der entsprechenden Dicarbonsäuren
GB1587198A (en) * 1976-11-23 1981-04-01 Ucb Sa Process for the production of butane-1,4 diol and tetrahydrofuran
DE2715667A1 (de) * 1977-04-07 1978-10-12 Hoechst Ag Verfahren zur herstellung von butandiol-(1.4)
US4165276A (en) * 1977-09-14 1979-08-21 Uop Inc. Hydrocarbon conversion with a superactive multimetallic catalytic composite
US4176088A (en) * 1978-03-20 1979-11-27 Uop Inc. Superactive multimetallic catalytic composite comprising platinum group metal and rhenium
US4244878A (en) * 1978-08-04 1981-01-13 Halcon Research And Development Corporation Preparation of maleic anhydride
US4231943A (en) * 1979-05-31 1980-11-04 Chevron Research Company Maleic anhydride production
US4251390A (en) * 1979-06-11 1981-02-17 Denka Chemical Corporation Partial oxidation catalyst
US4342644A (en) * 1979-06-29 1982-08-03 Exxon Research & Engineering Co. Reforming with multimetallic catalysts
US4283288A (en) * 1980-05-14 1981-08-11 Standard Oil Company (Indiana) Oxidation of butane to maleic anhydride
FR2505819A1 (fr) * 1981-05-12 1982-11-19 Inst Francais Du Petrole Procede de fabrication d'alcools par hydrogenation catalytique d'esters d'acides organiques

Also Published As

Publication number Publication date
NO159641B (no) 1988-10-17
NO845196L (no) 1985-06-24
BR8406586A (pt) 1985-10-15
HK81589A (en) 1989-10-20
CA1268752A (en) 1990-05-08
EP0147219A3 (en) 1985-11-21
NZ210651A (en) 1988-05-30
TR24399A (tr) 1991-09-27
US4550185A (en) 1985-10-29
AU1405692A (en) 1992-06-18
AU3708084A (en) 1986-06-26
ATE41609T1 (de) 1989-04-15
EP0147219A2 (de) 1985-07-03
AU3172789A (en) 1989-07-20
EP0147219B1 (de) 1989-03-22
SG44989G (en) 1989-11-17
MY100910A (en) 1991-05-31
NO159641C (no) 1989-01-25

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8363 Opposition against the patent
8365 Fully valid after opposition proceedings