EP1697288A1 - Verfahren zur hydrodehalogenierung von halogenierten meta-kresolen - Google Patents
Verfahren zur hydrodehalogenierung von halogenierten meta-kresolenInfo
- Publication number
- EP1697288A1 EP1697288A1 EP04803570A EP04803570A EP1697288A1 EP 1697288 A1 EP1697288 A1 EP 1697288A1 EP 04803570 A EP04803570 A EP 04803570A EP 04803570 A EP04803570 A EP 04803570A EP 1697288 A1 EP1697288 A1 EP 1697288A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- catalyst
- cresols
- salts
- meta
- hydrogen
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000003054 catalyst Substances 0.000 claims abstract description 28
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 150000001879 copper Chemical class 0.000 claims abstract description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 15
- 239000001257 hydrogen Substances 0.000 claims description 15
- 229910052739 hydrogen Inorganic materials 0.000 claims description 15
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical class [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 229910052736 halogen Inorganic materials 0.000 claims description 8
- 150000002367 halogens Chemical class 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical class CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 229910021591 Copper(I) chloride Inorganic materials 0.000 claims description 3
- 101150003085 Pdcl gene Proteins 0.000 claims description 3
- 238000005660 chlorination reaction Methods 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 2
- 239000012876 carrier material Substances 0.000 abstract description 5
- 150000002940 palladium Chemical class 0.000 abstract description 2
- 150000003057 platinum Chemical class 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000011541 reaction mixture Substances 0.000 description 6
- 239000006227 byproduct Substances 0.000 description 5
- CFKMVGJGLGKFKI-UHFFFAOYSA-N 4-chloro-m-cresol Chemical compound CC1=CC(O)=CC=C1Cl CFKMVGJGLGKFKI-UHFFFAOYSA-N 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- 238000005658 halogenation reaction Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- SMFHPCZZAAMJJO-UHFFFAOYSA-N 2-chloro-5-methylphenol Chemical compound CC1=CC=C(Cl)C(O)=C1 SMFHPCZZAAMJJO-UHFFFAOYSA-N 0.000 description 2
- HKHXLHGVIHQKMK-UHFFFAOYSA-N 2-chloro-m-cresol Chemical compound CC1=CC=CC(O)=C1Cl HKHXLHGVIHQKMK-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XLXVEZNLPBSJSZ-UHFFFAOYSA-N C1=C(C=CC=C1O)C.[Cl] Chemical compound C1=C(C=CC=C1O)C.[Cl] XLXVEZNLPBSJSZ-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000026030 halogenation Effects 0.000 description 2
- 150000002672 m-cresols Chemical class 0.000 description 2
- NDCNJVOXMCCKBP-UHFFFAOYSA-N 2,4-dichloro-5-methylphenol Chemical class CC1=CC(O)=C(Cl)C=C1Cl NDCNJVOXMCCKBP-UHFFFAOYSA-N 0.000 description 1
- YPNZJHFXFVLXSE-UHFFFAOYSA-N 2-chloro-6-methylphenol Chemical class CC1=CC=CC(Cl)=C1O YPNZJHFXFVLXSE-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000000998 batch distillation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 150000001896 cresols Chemical class 0.000 description 1
- 125000000113 cyclohexyl group Chemical class [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229940100630 metacresol Drugs 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- YBBRCQOCSYXUOC-UHFFFAOYSA-N sulfuryl dichloride Chemical compound ClS(Cl)(=O)=O YBBRCQOCSYXUOC-UHFFFAOYSA-N 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
Definitions
- the present invention relates to a process for the hydrodehalogenation of halogenated meta-cresols by the action of hydrogen in the presence of a catalyst.
- halogenated meta-cresols can be hydrodehalogenated by the action of hydrogen in the presence of special catalysts without side reactions on the OH or CH3 group of the aromatic.
- the present invention relates to a process for the hydrodehalogenation of halogenated meta-cresols of the formula (I)
- radicals R 1 to R 4 independently of one another represent hydrogen or halogen, but at least one of these radicals represents halogen
- halogenated meta-cresols of the formula (I) at temperatures between 100 and 250 ° C together with hydrogen in contact with a catalyst which has been prepared by applying one or more salts of palladium and / or Platinum and optionally a copper salt on an aluminum oxide or titanium dioxide carrier material.
- R 1 to R 4 in formula (I) are halogen, they can be, for example, chlorine, bromine or iodine. It is preferably chlorine.
- feedstocks in the invention Appropriate methods are in particular 2-chloro-m-cresol, 6-chloro-m-cresol and the di-chlorinated 2,4- and 4,6-dichloro-m-cresols. Mixtures of various halogenated meta-cresols of the formula (T), as are obtained in the production of chlorine-m-cresol, are preferably used.
- the process according to the invention is preferably used for the hydrodechlorination of false-chlorinated m-cresols which can be separated off by distillation in the work-up process for para-CHor-m-cresol production. Due to the different boiling points, the mono-chlorinated 2- and 6-chlorocresols can first be removed by distillation as low boilers. In a further distillation, or in the next step of a batch distillation, the di-chlorinated cresols of para-chloro-m-cresol are likewise distilled off as low boilers before 4-chloro-m-cresol.
- Preferred temperatures for the process according to the invention are in the range from 150 to 250 ° C.
- Hydrogen can be used in the usual qualities in the process according to the invention. For example, 0.5 to 50 moles of hydrogen can be used per mole of halogen in the halogenated meta-cresol (I) used. This amount is preferably 1 to 30 mol.
- the hydrogen can also be mixed with an ether gas, e.g. Nitrogen.
- the hydrogen content of such mixtures can be, for example, from 10 to 50% by volume.
- hydrogen and inert gas mixtures generally at least 1 mol of hydrogen per mol of halogen is used in the halogenated m-cresol of the formula (I) used.
- the catalyst is generally produced by applying palladium and / or platinum salts and optionally copper salts to aluminum oxide or titanium dioxide support material.
- the salts can be, for example, PdCl 2 , PtCl 2 , PtCl 4 , CuCl or CuCl 2 .
- the support materials are customary, preferably particulate A1 2 0 3 or TiO 2 types, as are customary for the preparation of supported catalysts.
- the particles can have different spatial shapes, preferably they are spherical in shape. Preference is given to catalysts which have been prepared from palladium salts and optionally copper salts and support materials with an average particle size of 1 to 6 mm and a BET surface area of more than 150 m 2 / g.
- the salts can be applied to the carrier materials by customary methods, for example by impregnating a solution of the salts and drying or calcining. For example, 0.5 to 100 g, preferably 1 to 50 g, of salts may have been applied to the catalysts per liter.
- the salts applied to the carrier material can optionally be reduced before or during the hydrodechlorination according to the invention.
- 0.5 to 5 moles of halogenated meta-cresols of the formula (£) per liter of catalyst can be passed over the catalyst per hour. This amount is preferably 1 to 3 moles per hour and liter of catalyst.
- the process according to the invention can optionally also be carried out batchwise, but it is preferably carried out continuously.
- Preferred pressures for the process according to the invention are those in the range from 1 to 5 bar.
- the pressure and the reaction temperature are preferably combined such that the halogenated meta-cresols of the formula (!) Used come in gaseous contact with the catalyst.
- the reaction mixture which leaves the reactor can, for example, be used in such a way that it is cooled, if appropriate, and fed again to a halogenation reaction, preferably a chlorination reaction.
- a halogenation reaction preferably a chlorination reaction.
- a mixture is used in the process according to the invention which is obtained from the reaction mixture of chlorine-m-cresol production as an undesirable by-product e.g. was separated by distillation, a hydrodehalogenation mixture is obtained which consists mainly of m-cresol in the process according to the invention.
- the reaction mixture can then be used directly in the chlorination process without further working up.
- the process according to the invention permits it at technically advantageous low temperatures with good conversions and selectivities with possibly high gas throughputs and thus easily.
- Example 4 was carried out as in Example 1, but with catalyst D and twice the amount of feed substance per unit of time. There was no deactivation until the end of the experiment (a few weeks)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10359794A DE10359794A1 (de) | 2003-12-19 | 2003-12-19 | Verfahren zur Hydrodehalogenierung von halogenierten meta-Kresolen |
| PCT/EP2004/013877 WO2005063663A1 (de) | 2003-12-19 | 2004-12-07 | Verfahren zur hydrodehalogenierung von halogenierten meta-kresolen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1697288A1 true EP1697288A1 (de) | 2006-09-06 |
Family
ID=34683577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04803570A Withdrawn EP1697288A1 (de) | 2003-12-19 | 2004-12-07 | Verfahren zur hydrodehalogenierung von halogenierten meta-kresolen |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7399890B2 (de) |
| EP (1) | EP1697288A1 (de) |
| CN (1) | CN100567235C (de) |
| BR (1) | BRPI0417664A (de) |
| DE (1) | DE10359794A1 (de) |
| MX (1) | MXPA06006663A (de) |
| WO (1) | WO2005063663A1 (de) |
| ZA (1) | ZA200604999B (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104557469A (zh) * | 2014-12-24 | 2015-04-29 | 铜陵千衍新材料科技有限公司 | 一种高效还原2-氯-3,5二甲基苯酚的方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2765335A (en) * | 1956-10-02 | Production of ortho-cresol from | ||
| DE2512509A1 (de) | 1975-03-21 | 1976-09-30 | Bayer Ag | Verfahren zur reinigung kern- chlorierter alkylphenole |
| US4480140A (en) * | 1983-03-16 | 1984-10-30 | Koppers Company, Inc. | Process for alkylating phenolic compounds to produce ortho or para-monoalkylated or 2,4- or 2,6-dialkylated phenols |
-
2003
- 2003-12-19 DE DE10359794A patent/DE10359794A1/de not_active Withdrawn
-
2004
- 2004-12-07 CN CNB2004800380185A patent/CN100567235C/zh not_active Expired - Fee Related
- 2004-12-07 MX MXPA06006663A patent/MXPA06006663A/es active IP Right Grant
- 2004-12-07 WO PCT/EP2004/013877 patent/WO2005063663A1/de not_active Ceased
- 2004-12-07 US US10/583,019 patent/US7399890B2/en not_active Expired - Fee Related
- 2004-12-07 EP EP04803570A patent/EP1697288A1/de not_active Withdrawn
- 2004-12-07 BR BRPI0417664-2A patent/BRPI0417664A/pt not_active Application Discontinuation
-
2006
- 2006-06-19 ZA ZA200604999A patent/ZA200604999B/en unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005063663A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070149829A1 (en) | 2007-06-28 |
| US7399890B2 (en) | 2008-07-15 |
| WO2005063663A1 (de) | 2005-07-14 |
| MXPA06006663A (es) | 2006-08-11 |
| CN100567235C (zh) | 2009-12-09 |
| BRPI0417664A (pt) | 2007-04-03 |
| DE10359794A1 (de) | 2005-07-21 |
| ZA200604999B (en) | 2007-09-26 |
| CN1898188A (zh) | 2007-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
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| REG | Reference to a national code |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 18W | Application withdrawn |
Effective date: 20130813 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LANXESS DEUTSCHLAND GMBH |