WO2001070715A1 - Procede de preparation d'oxyde de propylene - Google Patents
Procede de preparation d'oxyde de propylene Download PDFInfo
- Publication number
- WO2001070715A1 WO2001070715A1 PCT/JP2001/002191 JP0102191W WO0170715A1 WO 2001070715 A1 WO2001070715 A1 WO 2001070715A1 JP 0102191 W JP0102191 W JP 0102191W WO 0170715 A1 WO0170715 A1 WO 0170715A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- isopropylbenzene
- propylene oxide
- hydroperoxide
- epoxidation
- oxidation
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/02—Synthesis of the oxirane ring
- C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
- C07D301/19—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with organic hydroperoxides
Definitions
- the present invention relates to a method for producing propylene oxide. More specifically, propylene can be converted to propylene oxide using ropoxide as an oxygen carrier, and the isopropylbenzene can be used repeatedly, and moreover, a catalyst used in an epoxidation reaction for obtaining propylene oxide from propylene.
- the present invention relates to a method for producing propylene oxide, which has an excellent feature that its activity can be maintained at a high level for a long period of time. Background art
- an object of the present invention is to convert propylene to propylene oxide using isopropylbenzene hydroperoxide obtained from isopropylbenzene as an oxygen carrier, and to repeatedly use the isopropylbenzene.
- the present invention includes the following step, and the isopropylbenzene hydroperoxide to be subjected to the epoxidation step has not received a heat history at a temperature (t ° C) or higher represented by the following formula (1). It relates to a method for producing propylene oxide characterized by the following.
- Oxidation step Step of obtaining isopropylbenzene hydroperoxide by oxidizing isopropylbenzene
- Epoxidation step Step of reacting isopropylbenzene hydroperoxide obtained in the oxidation step with propylene to obtain propylene oxide and cumyl alcohol.
- Hydrocracking step A step of hydrolyzing cumyl alcohol obtained in the epoxidation step to obtain isopropylbenzene, and recycling the isopropylpropylbenzene to the oxidation step as a raw material in the oxidation step.
- the oxidation step is a step of obtaining isopropylbenzene hydrooxide by oxidizing isopropylbenzene.
- Oxidation of isopropylbenzene is usually performed by autoxidation with oxygenated gas such as air or oxygen-enriched air. This oxidation reaction may be performed without using an additive, or an additive such as an alkali may be used.
- the normal reaction temperature is 50 ° C or more and less than 150 ° C.
- the reaction pressure is between atmospheric pressure and 5 MPa.
- the alkali, N A_ ⁇ _H, alkali metal compounds and or the aqueous solution such as K_ ⁇ _H, alkaline earth metal compounds or N a 2 C 0 3, N a HC ⁇ Al force Li metal carbonate or ammonia and like 3 (NH 4) 2 C 0 3, an alkali metal carbonate ammonium ⁇ beam salts and their aqueous solutions used.
- the epoxidation step is a step of reacting isopropylbenzene hydroperoxide obtained in the oxidation step with propylene to obtain propylene oxide and cumyl alcohol.
- the epoxidation step is preferably performed in the presence of a catalyst comprising a titanium-containing silicon oxide, from the viewpoint of obtaining the target product with high yield and high selectivity.
- These catalysts are preferably so-called Ti-silica catalysts containing Ti chemically bonded to silicon oxide. Examples thereof include those in which a Ti compound is supported on a silica carrier, those in which the Ti compound is combined with a silicon oxide by a coprecipitation method or a sol-gel method, and zeolite compounds containing Ti.
- isopropyl benzene hydroxide used as a raw material in the epoxidation step may be a diluted or concentrated purified or non-purified product.
- the epoxidation reaction is performed by bringing propylene and isopropylbenzene hydroperoxide into contact with a catalyst.
- the reaction can be carried out in a liquid phase using a solvent.
- the solvent must be liquid at the temperature and pressure of the reaction and must be substantially inert to the reactants and products.
- the solvent may consist of the substances present in the hydroperoxide solution used. For example, when isopropylbenzene hydroperoxide is a mixture of isopropylbenzene as its raw material, it can be used as a substitute for the solvent without adding a solvent.
- epoxidation reaction temperature is generally 0 to 200: but a temperature of 25 to 200 is preferred.
- the pressure may be sufficient to keep the reaction mixture in a liquid state. In general, it is advantageous for the pressure to be between 100 and 1000 kPa.
- the epoxidation reaction can be advantageously carried out using a catalyst in the form of a slurry or fixed bed.
- a catalyst in the form of a slurry or fixed bed.
- it is preferred to use a fixed bed. It can be carried out by a batch method, a semi-continuous method, a continuous method, or the like.
- the liquid containing the reactants is passed through the fixed bed, the liquid mixture exiting the reaction zone contains no or substantially no catalyst.
- the hydrocracking step is a step in which cumyl alcohol obtained in the epoxidation step is hydrocracked to obtain isopropylbenzene, and the isopropylbenzene is recycled to the oxidation step as a raw material in the oxidation step. That is, the same product as isopropylbenzene used in the oxidation step is reproduced by hydrocracking.
- the hydrocracking reaction is usually performed by bringing cumyl alcohol and hydrogen into contact with a catalyst.
- the catalyst any catalyst having hydrogenation ability can be used. Examples of the catalyst include Group 10 metal catalysts such as cobalt, nickel and palladium, and Group 11 and Group 12 metal catalysts such as copper and zinc.
- Copper-based catalysts include copper, Raney copper, copper chromium, copper zinc, copper chromium zinc, copper silica, copper alumina, and the like.
- the reaction can be carried out in a liquid phase or a gas phase using a solvent.
- the solvent must be substantially inert to the reactants and products.
- the solvent may consist of the substances present in the cumyl alcohol solution used. For example, when cumyl alcohol is a mixture of the product isopropylbenzene, it can be used as a substitute for the solvent without adding a solvent.
- the hydrogenolysis reaction temperature is generally 0 to 500 ° C, but a temperature of 30 to 400 ° C is preferred. In general, it is advantageous for the pressure to be between 100 and 1000 kPa.
- the hydrocracking reaction can be advantageously carried out using a catalyst in the form of a slurry or a fixed bed. Book The method of the invention can be carried out by a batch, semi-continuous or continuous method. When the liquid or gas containing the reactants is passed through the fixed bed, the liquid mixture exiting the reaction zone contains no or substantially no catalyst.
- the most significant feature of the present invention is that isopropylbenzene hydroperoxide to be subjected to the epoxidation step has not received a heat history at a temperature (t ° C) or higher represented by the following formula (1).
- the oxidation reaction step can be cited as a place where the isopropylbenzene hydroperoxide to be subjected to the epoxidation step may receive a thermal history. In the case where a concentration step or a purification step is provided after the oxidation step, these steps can also be given as steps receiving the heat history.
- w represents the content (% by weight) of isopropylbenzene hydroperoxide in the solution containing the peroxide at the isopropylbenzene hydrate port, and is preferably 5 to 80% by weight.
- the concentration of the organic acid in the solution containing isopropylbenzene hydroperoxide supplied to the epoxidation step is preferably 0.5% by weight or less, more preferably 0% by weight or less. Not more than 1% by weight.
- the concentration of sodium in the solution containing isopropylbenzene hydroperoxide supplied to the epoxidation step is 0.1% by weight or less. It is preferably below. As a result, the activity of the catalyst used in the epoxidation step can be maintained at a high level, and the catalyst life can be maintained longer.
- the concentration of water in the solution containing isopropylbenzene hydroperoxide supplied to the epoxidation step is 1% by weight or less.
- isopropylbenzene didropoxide which thermally decomposes accounts for 23.5% of the whole, and a large amount of organic acids and heavy components are generated as compared with Example 1, and the yield is reduced in the epoxidation step.
- propylene to propylene oxide using isopropylbenzene hydroperoxide obtained from isopropylbenzene according to the present invention as an oxygen carrier, and repeatedly use the isopropylbenzene. It is also possible to provide a method for producing propylene oxide, which has excellent characteristics that the activity of a catalyst used in an epoxidation reaction for obtaining propylene oxide from propylene can be maintained at a high level for a long period of time.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Epoxy Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01912509A EP1266895B1 (en) | 2000-03-24 | 2001-03-19 | Process for producing propylene oxide |
BR0109384-3A BR0109384A (pt) | 2000-03-24 | 2001-03-19 | Processo para produção de óxido de propileno |
CA002403524A CA2403524A1 (en) | 2000-03-24 | 2001-03-19 | Process for producing propylene oxide |
AU2001241209A AU2001241209A1 (en) | 2000-03-24 | 2001-03-19 | Process for producing propylene oxide |
KR1020027012435A KR100862872B1 (ko) | 2000-03-24 | 2001-03-19 | 프로필렌 옥사이드의 제조방법 |
US10/221,366 US6600054B2 (en) | 2000-03-24 | 2001-03-19 | Process for producing propylene oxide |
DE60134631T DE60134631D1 (de) | 2000-03-24 | 2001-03-19 | Verfahren zur herstellung von propylenoxid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-83959 | 2000-03-24 | ||
JP2000083959A JP2001270874A (ja) | 2000-03-24 | 2000-03-24 | プロピレンオキサイドの製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001070715A1 true WO2001070715A1 (fr) | 2001-09-27 |
Family
ID=18600511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/002191 WO2001070715A1 (fr) | 2000-03-24 | 2001-03-19 | Procede de preparation d'oxyde de propylene |
Country Status (12)
Country | Link |
---|---|
US (1) | US6600054B2 (ja) |
EP (1) | EP1266895B1 (ja) |
JP (1) | JP2001270874A (ja) |
KR (1) | KR100862872B1 (ja) |
CN (1) | CN1222515C (ja) |
AT (1) | ATE399772T1 (ja) |
AU (1) | AU2001241209A1 (ja) |
BR (1) | BR0109384A (ja) |
CA (1) | CA2403524A1 (ja) |
DE (1) | DE60134631D1 (ja) |
ES (1) | ES2307596T3 (ja) |
WO (1) | WO2001070715A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6455712B1 (en) | 2000-12-13 | 2002-09-24 | Shell Oil Company | Preparation of oxirane compounds |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005097182A (ja) * | 2003-09-25 | 2005-04-14 | Sumitomo Chemical Co Ltd | プロピレンオキサイドの製造方法 |
ATE366246T1 (de) * | 2004-02-05 | 2007-07-15 | Shell Int Research | Verfahren zur herstellung von alkylenoxid |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3350422A (en) * | 1966-02-01 | 1967-10-31 | Halcon International Inc | Catalytic epoxidation of an olefinically unsaturated compound using an organic hydroperoxide as an epoxidizing agent |
US4891437A (en) * | 1984-12-31 | 1990-01-02 | Texaco Inc. | Olefin epoxidation of olefins in a polar medium |
US5319114A (en) * | 1993-09-23 | 1994-06-07 | Arco Chemical Technology, L. P. | Olefin epoxidation using a carbon molecular sieve impregnated with a transition metal |
US5410077A (en) * | 1993-11-08 | 1995-04-25 | Texaco Chemical Company | Controlled epoxidation of propylene |
US5760253A (en) * | 1997-01-29 | 1998-06-02 | Arco Chemical Technology, L.P. | Catalytic converter and method for highly exothermic reactions |
US5840933A (en) * | 1996-10-29 | 1998-11-24 | Arco Chemical Technology, L.P. | Catalytic converter system and progress |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3337646A (en) * | 1964-07-07 | 1967-08-22 | Halcon International Inc | Hydrogenation of cumyl alcohol to cumene |
-
2000
- 2000-03-24 JP JP2000083959A patent/JP2001270874A/ja active Pending
-
2001
- 2001-03-19 CN CNB018069290A patent/CN1222515C/zh not_active Expired - Fee Related
- 2001-03-19 CA CA002403524A patent/CA2403524A1/en not_active Abandoned
- 2001-03-19 US US10/221,366 patent/US6600054B2/en not_active Expired - Fee Related
- 2001-03-19 KR KR1020027012435A patent/KR100862872B1/ko not_active IP Right Cessation
- 2001-03-19 BR BR0109384-3A patent/BR0109384A/pt not_active IP Right Cessation
- 2001-03-19 EP EP01912509A patent/EP1266895B1/en not_active Expired - Lifetime
- 2001-03-19 WO PCT/JP2001/002191 patent/WO2001070715A1/ja active IP Right Grant
- 2001-03-19 AT AT01912509T patent/ATE399772T1/de not_active IP Right Cessation
- 2001-03-19 AU AU2001241209A patent/AU2001241209A1/en not_active Abandoned
- 2001-03-19 DE DE60134631T patent/DE60134631D1/de not_active Expired - Fee Related
- 2001-03-19 ES ES01912509T patent/ES2307596T3/es not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3350422A (en) * | 1966-02-01 | 1967-10-31 | Halcon International Inc | Catalytic epoxidation of an olefinically unsaturated compound using an organic hydroperoxide as an epoxidizing agent |
US4891437A (en) * | 1984-12-31 | 1990-01-02 | Texaco Inc. | Olefin epoxidation of olefins in a polar medium |
US5319114A (en) * | 1993-09-23 | 1994-06-07 | Arco Chemical Technology, L. P. | Olefin epoxidation using a carbon molecular sieve impregnated with a transition metal |
US5410077A (en) * | 1993-11-08 | 1995-04-25 | Texaco Chemical Company | Controlled epoxidation of propylene |
US5840933A (en) * | 1996-10-29 | 1998-11-24 | Arco Chemical Technology, L.P. | Catalytic converter system and progress |
US5760253A (en) * | 1997-01-29 | 1998-06-02 | Arco Chemical Technology, L.P. | Catalytic converter and method for highly exothermic reactions |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6455712B1 (en) | 2000-12-13 | 2002-09-24 | Shell Oil Company | Preparation of oxirane compounds |
Also Published As
Publication number | Publication date |
---|---|
EP1266895A1 (en) | 2002-12-18 |
EP1266895B1 (en) | 2008-07-02 |
ES2307596T3 (es) | 2008-12-01 |
ATE399772T1 (de) | 2008-07-15 |
CN1419551A (zh) | 2003-05-21 |
US20030023102A1 (en) | 2003-01-30 |
BR0109384A (pt) | 2003-06-03 |
AU2001241209A1 (en) | 2001-10-03 |
CA2403524A1 (en) | 2002-09-17 |
EP1266895A4 (en) | 2004-09-01 |
KR100862872B1 (ko) | 2008-10-15 |
DE60134631D1 (de) | 2008-08-14 |
US6600054B2 (en) | 2003-07-29 |
KR20030009399A (ko) | 2003-01-29 |
JP2001270874A (ja) | 2001-10-02 |
CN1222515C (zh) | 2005-10-12 |
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