NL8300962A - PROCESS FOR HYDROGENATING AROMATIC HYDROCARBONS. - Google Patents
PROCESS FOR HYDROGENATING AROMATIC HYDROCARBONS. Download PDFInfo
- Publication number
- NL8300962A NL8300962A NL8300962A NL8300962A NL8300962A NL 8300962 A NL8300962 A NL 8300962A NL 8300962 A NL8300962 A NL 8300962A NL 8300962 A NL8300962 A NL 8300962A NL 8300962 A NL8300962 A NL 8300962A
- Authority
- NL
- Netherlands
- Prior art keywords
- phenol
- hydrogen peroxide
- pitch
- selectivity
- molecules
- Prior art date
Links
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
- C07C37/60—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by oxidation reactions introducing directly hydroxy groups on a =CH-group belonging to a six-membered aromatic ring with the aid of other oxidants than molecular oxygen or their mixtures with molecular oxygen
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/18—Preparation of ethers by reactions not forming ether-oxygen bonds
- C07C41/26—Preparation of ethers by reactions not forming ether-oxygen bonds by introduction of hydroxy or O-metal groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Description
, 833026/vdKl/kd * "*, 833026 / vdKl / kd * "*
Korte aanduiding: Werkwijze voor het hydrogeneren van aromatische koolwaterstoffen.Short designation: Process for hydrogenating aromatic hydrocarbons.
De uitvinding heeft betrekking op een werkwijze voor het hydroxyleren van aromatische koolwaterstoffen, die wordt uitgevoerd door de betreffende koolwaterstof te laten reageren met waterstofperoxyde in tegenwoordigheid van syn-5 thetische zeolieten en aceton als oplosmiddel.The invention relates to a process for the hydroxylation of aromatic hydrocarbons which is carried out by reacting the hydrocarbon in question with hydrogen peroxide in the presence of synthetic zeolites and acetone as a solvent.
De direkte hydroxylering van aromatische koolwaterstoffen door middel van waterstofperoxyde is reeds enige tijd bekend, en wordt uitgevoerd in tegenwoordigheid van een katalysator die gewoonlijk wordt gekozen uit de overgangs-10 metalen. jThe direct hydroxylation of aromatic hydrocarbons by hydrogen peroxide has been known for some time, and is conducted in the presence of a catalyst usually selected from the transition metals. j
Deze reaktie bezit echter bepaalde nadelen, waaronder de volgende: - lage selektiviteit ten opzichte van waterstofperoxyde, vanwege de gedeeltelijke ontleding bij de metaalionen; 15 - lage selektiviteit ten opzichte van de omgezette koolwater stof, door koppelingsreakties met tussentijds gevormde organische radicalen; - in het bijzondere geval van fenol zijn de difenolen die worden gevormd, gemakkelijker te oxyderen dan fenol zelf, 20 wat leidt tot een onvermijdelijke, aanzienlijke vermindering van de omzetting.However, this reaction has certain drawbacks, including the following: low selectivity to hydrogen peroxide due to partial decomposition at the metal ions; - low selectivity to the converted hydrocarbon, due to coupling reactions with intermediate-formed organic radicals; - in the particular case of phenol, the diphenols that are formed are easier to oxidize than phenol itself, which leads to an inevitable, significant reduction in the conversion.
Voor het uitvoeren van de reaktie tussen een aromatische koolwaterstof en waterstofperoxyde is het gebruik bekend van een zuur aluminiumsilicaat dat tevoren is ver-25 giftigd of gedeeltelijk gemodificeerd door zeldzame aardmetalen (Amerikaans octrooischrift 3.580.956).To perform the reaction between an aromatic hydrocarbon and hydrogen peroxide, it is known to use an acidic aluminum silicate that has been previously poisoned or partially modified by rare earth metals (US Patent 3,580,956).
Hoewel het rendement van de bovengenoemde systemen wordt verbeterd, is door het gebruik van dit katalytische materiaal de vorming van aanzienlijke hoeveelheden nutteloze 30 bijprodukten, waarvan de aanwezigheid de uiteindelijk resultaten en de economie van het gehele process negatief beïnvloedt, echter niet volledig afwezig.Although the efficiency of the above systems is improved, the use of this catalytic material does not completely eliminate the formation of significant amounts of useless by-products, the presence of which adversely affects the final results and the economy of the entire process.
Uit de Nederlandse octrooiaanvrage 8104175 is tevens bekend dat het mogelijk is hydroxylgroepen te binden 35 aan aromatische kernen door de betreffende aromatische koolwaterstof te laten reageren met waterstofperoxyde, zonder de 8300962 -2- ί , ; ν ϊ 1 r bovengenoemde nadelen, door de reaktie uit te voeren in tegenwoordigheid van synthetische zeolieten die ofwel gesubstitueerde ofwel uitgewisselde heteroatomen bevatten.It is also known from Dutch patent application 8104175 that it is possible to bind hydroxyl groups to aromatic nuclei by reacting the relevant aromatic hydrocarbon with hydrogen peroxide, without the 8300962-2-ί; The above disadvantages, by carrying out the reaction in the presence of synthetic zeolites containing either substituted or exchanged heteroatoms.
Zeolietmaterialen die kunnen worden toegepast bij 5 de werkwijze volgens deze octrooiaanvrage kunnen worden gekozen uit bijvoorbeeld die welke zijn beschreven in de Nederlandse octrooiaanvrage 79.04909.Zeolite materials that can be used in the method according to this patent application can be selected from, for example, those described in Dutch patent application 79.04909.
Deze laatstgenoemde octrooiaanvrage beschrijft een synthetisch materiaalbestaande uit een kristallijn silicium-10 dioxyde dat is gemodificeerd door de aanwezigheid van elementen die het kristallijne siliciumdioxyderooster binnendringen om enkele siliciumatomen te substitueren.This latter patent application describes a synthetic material consisting of a crystalline silicon dioxide which has been modified by the presence of elements which penetrate the crystalline silicon dioxide lattice to substitute some silicon atoms.
De modificerende elementen worden gekozen uit Cr,The modifying elements are selected from Cr,
Be, Ti, V,Mn, Fe, Co, Zn, Rh, Ag, Sn, Sb, B.Be, Ti, V, Mn, Fe, Co, Zn, Rh, Ag, Sn, Sb, B.
15 De bovengenoemde octrooiaanvrage heeft eveneens betrekking op werkwijze ter bereiding van deze synthetische materialen, en voor de noodzakelijke details en een beter begrip van de struktuur van het materiaal zelf wordt daarnaar verwezen.The above-mentioned patent application also relates to a process for preparing these synthetic materials, and reference is made to them for the necessary details and a better understanding of the structure of the material itself.
20 Ten aanzien van de hydroxyleringswerkwijze, onder werp van de Nederlandse octrooiaanvrage 81.04175, wordt met nadruk gewezen op het grote voordeel dat bij het uitvoeren van de werkwijze wordt verkregen door het gebruik van synthetische zeolieten, welk voordeel bestaat uit het gemak om 25 de reaktie te richten op de vorming van één produkt in plaats van een ander door eenvoudigweg een bepaald gemodificeerd zeoliet te kiezen.Regarding the hydroxylation process, subject to Dutch patent application 81.04175, it is emphasized the great advantage that in the carrying out of the process is obtained by the use of synthetic zeolites, which advantage consists of the ease of reaction. focus on the formation of one product instead of another by simply choosing a particular modified zeolite.
Zo wordt bijvoorbeeld in het geval van de fenol- hydroxylering een poreus, kristallijn, synthetisch materiaal .. F / door 30 toegepast, gevormd uit silicium en titaanoxyden, en/het gebruik van een dergelijk materiaal kan men een mengsel van hydrochinon en pyrocatechol in een verhouding die gelijk is aan of groter dan 1, verkrijgen.For example, in the case of the phenol hydroxylation, a porous, crystalline, synthetic material .. F / door 30 is used, formed from silicon and titanium oxides, and / using such a material one can use a mixture of hydroquinone and pyrocatechol in a obtain a ratio equal to or greater than 1.
De reaktie tussen de aromatische koolwaterstof en 35 waterstofperoxyde wordt uitgevoerd bij een temperatuur tussen 80 en 120°C, in tegenwoordigheid van de koolwaterstof, ofwel alleen, ofwel met een oplosmiddel, gekozen uit water, F zoals de in de Nederlandse octrooiaanvrage 8006939 beschreven katalysatoren 8300962 r -3- r - ...................The reaction between the aromatic hydrocarbon and hydrogen peroxide is carried out at a temperature between 80 and 120 ° C, in the presence of the hydrocarbon, either alone or with a solvent selected from water, F such as the catalysts 8300962 described in Dutch patent application 8006939. r -3- r - ...................
! methanol, azijnzuur, isopropanol of acetonitril. j! methanol, acetic acid, isopropanol or acetonitrile. j
Koolwaterstofsubstraten die kunnen worden behan- ] deld volgens de uitvinding, zijn fenol, tolueen, anisool, xylenen, mesityleen, benzeen, nitrobenzeen, ethylbenzeen en 5 acetanilide.Hydrocarbon substrates that can be treated according to the invention are phenol, toluene, anisole, xylenes, mesitylene, benzene, nitrobenzene, ethylbenzene and acetanilide.
Aanvraagster heeftnu gevonden dat het door reaktie van de betreffende koolwaterstof in tegenwoordigheid van aceton, mogelijk is de reaktie uit te voeren met zeer hoge toevoerverhoudingen en met buitengewoon hoge opbrengsten.Applicant has now found that by reacting the hydrocarbon in question in the presence of acetone, it is possible to carry out the reaction with very high feed ratios and with extremely high yields.
10 De hoeveelheden zware nevenprodukten is zeer ge ring.The amounts of heavy by-products are very low.
De reaktie wordt bij voorkeur uitgevoerd bij de terugvloeitemperatuur.The reaction is preferably carried out at the reflux temperature.
De uitvoeringsomstandigheden zullen duidelijk wor-15 den aan hand van de hierna volgende voorbeelden, waarin de volgende definities wordt toegepast:The operating conditions will become clear from the following examples, in which the following definitions are applied:
Toegevoerde aantal moleculenNumber of molecules supplied
Toevoerverhouding = - X 100Feed ratio = - X 100
Toegevoerde aantal moleculen fenol 20 Aantal gevormde moleculen difenolenNumber of phenol molecules supplied 20 Number of diphenol molecules formed
Fenol selektiviteit = - X 100Phenol selectivity = - X 100
Aantal omgezette moleculen fenol Aantal gevormde moleculen difenolen °Pkrengst = - x 100 25 Aantal toegevoerde moleculen H2O2Number of converted phenol molecules Number of formed diphenol molecules ° P yield = - x 100 25 Number of supplied H2O2 molecules
Aantal omgezette moleculen fenolNumber of phenol molecules converted
Fenol omzetting = -Phenol conversion = -
Aantal toegevoerde moleculen fenol Aantal moleculen hydrochinon 30 Hydrochinon = - X 100 selektiviteit Aantal moleculen difenolenNumber of supplied phenol molecules Number of hydroquinone molecules 30 Hydroquinone = - X 100 selectivity Number of diphenol molecules
VOORBEELD IEXAMPLE I
Men brengt 50 g fenol, 39 g aceton en 2,5 g katalysator in een 250 ml kolf. Als het systeem een tempera-^ tuur van 80°C bereikt, voegt men 10 cc 30%'s w/v waterstof-peroxyde toe. Na een reaktieduur van twee uren worden de volgende resultaten verkregen: 8300982 \ -4- fenol selektiviteit 96,25 % fenol omzetting 18,36 % waterstofperoxyde opbrengst 88,5 % pek/pek+difenolen 4,2 % 5 hydrochinon selektiviteit 50 %50 g of phenol, 39 g of acetone and 2.5 g of catalyst are placed in a 250 ml flask. When the system reaches a temperature of 80 ° C, 10 cc of 30% w / v hydrogen peroxide is added. After a reaction time of two hours, the following results are obtained: 8300982 \ -4-phenol selectivity 96.25% phenol conversion 18.36% hydrogen peroxide yield 88.5% pitch / pitch + diphenols 4.2% 5 hydroquinone selectivity 50%
VOORBEELD IIEXAMPLE II
Men volgt de werkwijze van voorbeeld I, doch voegt 15 cc 36%'s w/v waterstofperoxyde toe. Men verkrijgt na 2 uren de volgende resultaten: 10 fenol selektiviteit 95,45 % fenol omzetting 24,25 % waterstofperoxyde opbrengst 79,6 % pek/pek+difenolen 5,1 % hydrochinon selektiviteit 50 %The procedure of Example 1 is followed, but 15 cc of 36% w / v hydrogen peroxide are added. After 2 hours the following results are obtained: 10 phenol selectivity 95.45% phenol conversion 24.25% hydrogen peroxide yield 79.6% pitch / pitch + diphenols 5.1% hydroquinone selectivity 50%
15 VOORBEELD IIIEXAMPLE III
Men volgt de werkwijze van voorbeeld II, doch voegt 20 cc 36%'s w/v waterstofperoxyde toe. Na 2 uren verkrijgt men de volgende resultaten: fenol selektiviteit 92,96 % 20 fenol omzetting 31,28 % waterstofperoxyde opbrengst 73,9 % pek/pek+difenolen 7,8 % hydrochinon selektiviteit 50 %The procedure of Example II is followed, but 20 cc of 36% w / v hydrogen peroxide are added. After 2 hours the following results are obtained: phenol selectivity 92.96% 20 phenol conversion 31.28% hydrogen peroxide yield 73.9% pitch / pitch + diphenols 7.8% hydroquinone selectivity 50%
VOORBEELD IVEXAMPLE IV
25 Men volgt de werkwijze van voorbeeld III, doch voegt 25 cc 36%'s waterstofperoxyde toe. De volgende resultaten verkrijgt men na 2 uren: fenol selektiviteit 91,29 % waterstofperoxyde opbrengst 68,9 % 30 pek/pek+difenolen 9,7 % hydrochinon selektviteit 50 % fenol omzetting 36,64 %The procedure of Example III is followed, but 25 cc of 36% hydrogen peroxide is added. The following results are obtained after 2 hours: phenol selectivity 91.29% hydrogen peroxide yield 68.9% pitch / pitch + diphenols 9.7% hydroquinone selectivity 50% phenol conversion 36.64%
VOORBEELD VEXAMPLE V
Men volgt de werkwijze van voorbeeld IV, doch 35 voegt 30 cc 36%'s waterstofperoxyde toe. Na 2 uren verkrijgt men de volgende resultaten: fenol selektiviteit 89,4 % waterstofperoxyde opbrengst 59,4 % **» 8300962 -5- * r pek/pek+difenolen 12 % hydrochinon selektiviteit 50 % fenol omzetting 37,76 %The procedure of Example IV is followed, but 30 cc of 36% hydrogen peroxide is added. After 2 hours, the following results are obtained: phenol selectivity 89.4% hydrogen peroxide yield 59.4% ** »8300962 -5- * pitch / pitch + diphenols 12% hydroquinone selectivity 50% phenol conversion 37.76%
VOORBEELD VIEXAMPLE VI
5 Men brengt 30 cc anisool, 70 cc aceton . en 3 g katalysator in een kolf van 250 cc, voorzien van een bolcon- densor. Wanneer een temperatuur van 70°C is bereikt, voegt men druppelsgewijze 7,5 cc 36%'s waterstofperoxyde toe- Na afloop van de reaktie verkrijgt men de volgende resultaten: 10 waterstofperoxyde opbrengst 72,8 % anisool omzetting 22,7 % pek/pek+produkten 6,26 % anisoolopbrengst 90,6 % berekend als moleculen HMME + moleculen gevormd guajacol _ X 100 15 moleculen omgezet anisool30 cc of anisole and 70 cc of acetone are added. and 3 g of catalyst in a 250 cc flask fitted with a ball condenser. When a temperature of 70 ° C is reached, 7.5 cc of 36% hydrogen peroxide are added dropwise. After the reaction is complete, the following results are obtained: hydrogen peroxide yield 72.8% anisole conversion 22.7% pitch / pitch + products 6.26% anisole yield 90.6% calculated as molecules HMME + molecules formed guajacol _ X 100 15 molecules converted anisole
Produkt verdeling: hydrochinonmonomethylether (HMME) 64 % guajacol 36 %. |Product distribution: hydroquinone monomethyl ether (HMME) 64% guajacol 36%. |
VOORBEELD VIIEXAMPLE VII
Men volgt de werkwijze van voorbeeld VI, doch 20 voegt 10 cc 36%’s waterstofperoxyde toe.The procedure of example VI is followed, but 10 cc of 36% hydrogen peroxide is added.
Men verkrijgt de volgende resultaten: waterstofperoxyde opbrengst 70 % anisoolopbrengst 85 % anisoolomzetting 24 % 25 pek/pek+produkten 11 % produkt verdeling : HMME 64% guajacol 36 %The following results are obtained: hydrogen peroxide yield 70% anisole yield 85% anisole conversion 24% 25 pitch / pitch + products 11% product distribution: HMME 64% guajacol 36%
De in bovenstaande voorbeelden toegepaste katalysator bestaat uit een titaansilicaliet, bereid volgens de in Voorbeeld I van de Nederlandse octrooiaanvrage 8006939 beschreven 30 werkwijze- 8300962The catalyst used in the above examples consists of a titanium silicalite, prepared according to the method described in Example I of Dutch patent application 8006939.
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT20262/82A IT1150699B (en) | 1982-03-19 | 1982-03-19 | PROCEDURE FOR THE OXIDRILATION OF AROMATIC HYDROCARBONS |
IT2026282 | 1982-03-19 |
Publications (3)
Publication Number | Publication Date |
---|---|
NL8300962A true NL8300962A (en) | 1983-10-17 |
NL192876B NL192876B (en) | 1997-12-01 |
NL192876C NL192876C (en) | 1998-04-02 |
Family
ID=11165238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL8300962A NL192876C (en) | 1982-03-19 | 1983-03-17 | Process for the hydroxylation of aromatic hydrocarbons. |
Country Status (10)
Country | Link |
---|---|
BE (1) | BE896225A (en) |
CH (1) | CH652114A5 (en) |
DE (1) | DE3309669A1 (en) |
DK (1) | DK171933B1 (en) |
FR (1) | FR2523575B1 (en) |
GB (1) | GB2116974B (en) |
IT (1) | IT1150699B (en) |
NL (1) | NL192876C (en) |
NO (1) | NO156648C (en) |
SE (1) | SE461730B (en) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2618143B1 (en) * | 1987-07-17 | 1989-09-22 | Rhone Poulenc Chimie | PHENOL HYDROXYLATION PROCESS |
FR2622575B1 (en) * | 1987-10-29 | 1990-02-23 | Rhone Poulenc Chimie | PROCESS FOR HYDROXYLATION OF PHENOLS AND PHENOL ETHERS |
FR2622574B1 (en) * | 1987-10-29 | 1990-02-23 | Rhone Poulenc Chimie | PROCESS FOR HYDROXYLATION OF PHENOLS AND PHENOL ETHERS |
US5254746A (en) * | 1987-10-29 | 1993-10-19 | Rhone-Poulenc Chimie | Hydroxylation of phenols/phenol ethers |
FR2643633B1 (en) * | 1989-02-28 | 1991-05-10 | Rhone Poulenc Chimie | PROCESS FOR HYDROXYLATION OF PHENOLS AND PHENOL ETHERS |
FR2666333B1 (en) * | 1990-08-31 | 1994-04-08 | Rhone Poulenc Chimie | PROCESS FOR HYDROXYLATION OF PHENOLS AND PHENOL ETHERS. |
EP0466545A1 (en) * | 1990-06-29 | 1992-01-15 | Rhone-Poulenc Chimie | Zeolites based on silica and oxides of tetravalent elements, method for their synthesis and their use |
JPH06340416A (en) * | 1990-08-29 | 1994-12-13 | Rhone Poulenc Chim | Preparation of zeolite wherein silica and if necessary, oxide of quadrivalent element is used as base material |
DE4138155A1 (en) * | 1991-11-21 | 1993-05-27 | Basf Ag | METHOD FOR PRODUCING ESSENTIALLY ALKALIFIED TITANICILICATE CRYSTALS WITH ZEOLITE STRUCTURE |
US5426244A (en) * | 1991-12-20 | 1995-06-20 | Mitsubishi Gas Chemical Company, Inc. | Method for preparing dihydric phenols |
DE4214174A1 (en) * | 1992-04-30 | 1993-11-04 | Basf Ag | METHOD FOR PRODUCING N-HYDROXYAZOLES |
FR2693457B1 (en) * | 1992-07-10 | 1994-09-02 | Rhone Poulenc Chimie | Process for the hydroxylation of phenolic compounds. |
US5233097A (en) * | 1992-10-15 | 1993-08-03 | Uop | Oxidation of aromatics to hydroxyaromatics using aluminosilicates containing framework titanium |
BR9307586A (en) * | 1992-12-03 | 1999-08-31 | Leuna Katalysatoren Gmbh | Oxidation catalysts and process for obtaining oximes |
DE4419195A1 (en) * | 1993-07-12 | 1995-01-19 | Degussa | Structured catalyst consisting of microporous oxides of silicon, aluminum and titanium |
RU2058286C1 (en) * | 1994-04-12 | 1996-04-20 | Институт катализа им.Г.К.Борескова СО РАН | Method for production of phenol or its derivatives |
RU2074164C1 (en) * | 1994-04-12 | 1997-02-27 | Институт катализа им.Г.К.Борескова СО РАН | Method of producing phenol and derivatives thereof |
US5712402A (en) * | 1994-08-22 | 1998-01-27 | Board Of Trustees Operating Michigan State University | Catalytic applications of mesoporous metallosilicate molecular sieves and methods for their preparation |
DE19607577A1 (en) * | 1996-02-29 | 1997-09-04 | Basf Ag | Mesh catalyst based on titanium or vanadium zeolites and inert mesh fabrics to accelerate oxidation reactions |
US5874646A (en) * | 1996-08-07 | 1999-02-23 | Solutia Inc. | Preparation of phenol or phenol derivatives |
US5892132A (en) * | 1996-08-08 | 1999-04-06 | Solutia Inc. | Transport hydroxylation reactor |
US5874647A (en) * | 1996-08-20 | 1999-02-23 | Solutia Inc. | Benzene hydroxylation catalyst stability by acid treatment |
US5808167A (en) * | 1996-08-20 | 1998-09-15 | Solutia Inc. | Selective introduction of active sites for hydroxylation of benzene |
BR9711870B1 (en) | 1996-10-07 | 2011-10-18 | process for making phenol. | |
US6156938A (en) * | 1997-04-03 | 2000-12-05 | Solutia, Inc. | Process for making phenol or phenol derivatives |
WO1999025666A2 (en) * | 1997-11-14 | 1999-05-27 | Du Pont Pharmaceuticals Company | Process for the selective oxidation of organic compounds |
WO1999026936A2 (en) * | 1997-11-24 | 1999-06-03 | E.I. Du Pont De Nemours And Company | Process for the selective oxidation of organic compounds |
DE19939416A1 (en) | 1999-08-20 | 2001-02-22 | Basf Ag | Production of zeolite, e.g. titanium zeolite, useful as catalyst (support), sorbent, pigment or filler for plastics, involves crystallizing solid from precursor(s) and direct drying of reaction mixture |
US6437197B1 (en) * | 2000-04-27 | 2002-08-20 | Shell Oil Company | Process for catalytic hydroxylation of aromatic hydrocarbons |
JP2005060384A (en) * | 2003-07-30 | 2005-03-10 | Ube Ind Ltd | Manufacturing method of phenol compound |
WO2005063664A1 (en) * | 2003-12-31 | 2005-07-14 | Council Of Scientific & Industrial Research | Process for conversion of phenol to hydroquinone and quinones |
BRPI0608355B1 (en) | 2005-02-17 | 2016-05-24 | Monsanto Technology Llc | process for oxidation of n- (phosphonomethyl) iminodiacetic acid or its salt and oxidation catalyst |
FR2987046B1 (en) | 2012-02-17 | 2014-03-21 | Rhodia Operations | HYDROXYLATION PROCESS FOR AROMATIC COMPOUNDS, HYDROXYLATION CATALYST AND PROCESS FOR PREPARING THE SAME |
TWI471299B (en) | 2012-10-04 | 2015-02-01 | China Petrochemical Dev Corp Taipei Taiwan | Hydroxylation of phenol |
CN105523898B (en) * | 2014-09-29 | 2019-03-22 | 中国石油化工股份有限公司 | A kind of method of oxidation of phenol |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1448358A (en) * | 1974-04-04 | 1976-09-08 | Ube Industries | Process for preparint dihydric phenol derivatives |
US4013727A (en) * | 1974-11-07 | 1977-03-22 | Ube Industries, Ltd. | Process for preparing hydroxyphenyl ethers |
IT1195029B (en) * | 1980-09-09 | 1988-09-28 | Anic Spa | PROCEDURE FOR THE OXIDRILATION OF AROMATIC HYDROCARBONS |
-
1982
- 1982-03-19 IT IT20262/82A patent/IT1150699B/en active
-
1983
- 1983-03-16 NO NO830926A patent/NO156648C/en not_active IP Right Cessation
- 1983-03-16 CH CH1454/83A patent/CH652114A5/en not_active IP Right Cessation
- 1983-03-16 GB GB08307296A patent/GB2116974B/en not_active Expired
- 1983-03-17 DE DE19833309669 patent/DE3309669A1/en active Granted
- 1983-03-17 NL NL8300962A patent/NL192876C/en not_active IP Right Cessation
- 1983-03-17 DK DK123783A patent/DK171933B1/en not_active IP Right Cessation
- 1983-03-18 SE SE8301492A patent/SE461730B/en not_active IP Right Cessation
- 1983-03-18 FR FR8304502A patent/FR2523575B1/en not_active Expired
- 1983-03-21 BE BE0/210368A patent/BE896225A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CH652114A5 (en) | 1985-10-31 |
IT8220262A1 (en) | 1983-09-19 |
NL192876C (en) | 1998-04-02 |
GB2116974A (en) | 1983-10-05 |
BE896225A (en) | 1983-09-21 |
SE461730B (en) | 1990-03-19 |
NO830926L (en) | 1983-09-20 |
GB8307296D0 (en) | 1983-04-20 |
DK171933B1 (en) | 1997-08-18 |
IT1150699B (en) | 1986-12-17 |
GB2116974B (en) | 1985-10-02 |
DK123783A (en) | 1983-09-20 |
FR2523575B1 (en) | 1986-10-10 |
DE3309669C2 (en) | 1990-10-25 |
SE8301492L (en) | 1983-09-20 |
DK123783D0 (en) | 1983-03-17 |
NO156648C (en) | 1987-10-28 |
FR2523575A1 (en) | 1983-09-23 |
NL192876B (en) | 1997-12-01 |
SE8301492D0 (en) | 1983-03-18 |
DE3309669A1 (en) | 1983-09-29 |
IT8220262A0 (en) | 1982-03-19 |
NO156648B (en) | 1987-07-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NL8300962A (en) | PROCESS FOR HYDROGENATING AROMATIC HYDROCARBONS. | |
Subramanian et al. | Para-selective butylation of phenol over silicoaluminophosphate molecular sieve SAPO-11 catalyst | |
DE3135559C2 (en) | Process for the preparation of phenolic compounds | |
US5233097A (en) | Oxidation of aromatics to hydroxyaromatics using aluminosilicates containing framework titanium | |
WO2010098916A2 (en) | Process for producing phenol | |
EP1013632A1 (en) | Process for production of esters | |
US4578521A (en) | Shape-selective catalytic oxidation of phenol | |
KR100995756B1 (en) | Process for the alkylation of aromatic compounds | |
JPH01313448A (en) | Production of dihydroxybennzene | |
EP0122782B1 (en) | Process for the production of unsaturated carboxylic acids and/or esters | |
FR2822822A1 (en) | PROCESS FOR PREPARING DIHYDROXYBENZENE ALKYL | |
EP0393895B1 (en) | Silicometallate molecular sieves and their use as catalysts in oxidation of alkanes | |
RU2185368C2 (en) | Method of oxidation of aromatic compounds to hydroxyaromatic compounds | |
Mirjalili et al. | Silica sulfuric acid/potassium permanganate/wet SiO2 as an efficient heterogeneous method for the oxidation of alcohols under mild conditions | |
RU2010790C1 (en) | Method of phenol and its derivatives synthesis | |
CA1191824A (en) | Aluminosilicates and silica gels having a low content of transition elements, a process for their manufacture and their use | |
CS106491A2 (en) | Method of cycloalkanone and/or cycloalkanole production | |
JP2772839B2 (en) | Method for producing aromatic hydroxy compound | |
SU910185A1 (en) | Catalyst for oxydating tetralin | |
JP3272420B2 (en) | Method for transalkylating naphthalenes and method for producing deodorized high-boiling aromatic solvent | |
US3161693A (en) | Aromatic polycarboxylic acids | |
JP3484243B2 (en) | Method for catalytic reduction of nitrogen oxides | |
Yashima et al. | Hydroxylation of toluene with hydrogen peroxide on HY zeolites with various Si/Al ratios | |
AU694967B2 (en) | Catalysts for production of phenol and its derivatives | |
EP0181502B1 (en) | Process for the preparation of monocarboxylic-acid anhydrides |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A85 | Still pending on 85-01-01 | ||
BA | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
DNT | Communications of changes of names of applicants whose applications have been laid open to public inspection |
Free format text: ENICHEM ANIC S.P.A. |
|
CNR | Transfer of rights (patent application after its laying open for public inspection) |
Free format text: ENICHEM SYNTHESIS S.P.A. |
|
CNR | Transfer of rights (patent application after its laying open for public inspection) |
Free format text: BORREGAARD ITALIA S.P.A.;ENICHEM SOCIETA DI PARTECIPAZIONI S.R.L. |
|
V4 | Discontinued because of reaching the maximum lifetime of a patent |
Effective date: 20030317 |