FR2291957A1 - Para-xylene prodn from toluene - by acid catalysed transalkylation with polymethyl-benzenes - Google Patents
Para-xylene prodn from toluene - by acid catalysed transalkylation with polymethyl-benzenesInfo
- Publication number
- FR2291957A1 FR2291957A1 FR7438013A FR7438013A FR2291957A1 FR 2291957 A1 FR2291957 A1 FR 2291957A1 FR 7438013 A FR7438013 A FR 7438013A FR 7438013 A FR7438013 A FR 7438013A FR 2291957 A1 FR2291957 A1 FR 2291957A1
- Authority
- FR
- France
- Prior art keywords
- xylene
- toluene
- alumina
- transalkylation
- prodn
- 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- Withdrawn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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C6/00—Preparation of hydrocarbons from hydrocarbons containing a different number of carbon atoms by redistribution reactions
- C07C6/08—Preparation of hydrocarbons from hydrocarbons containing a different number of carbon atoms by redistribution reactions by conversion at a saturated carbon-to-carbon bond
- C07C6/12—Preparation of hydrocarbons from hydrocarbons containing a different number of carbon atoms by redistribution reactions by conversion at a saturated carbon-to-carbon bond of exclusively hydrocarbons containing a six-membered aromatic ring
- C07C6/126—Preparation of hydrocarbons from hydrocarbons containing a different number of carbon atoms by redistribution reactions by conversion at a saturated carbon-to-carbon bond of exclusively hydrocarbons containing a six-membered aromatic ring of more than one hydrocarbon
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
Xylene mixt. with a high p-isomer content produced by acid-catalysed transalkylation of toluene at 0-500 (pref. 20-400) degrees C and 1-100 (pref. 1-50) bars using pentamethylbenzene, hexamethylbenzene (prefd.), polymethyl condensed aromatics and/or complex molecules contg. a penta- or hexa-methylbenzene moiety. The catalyst is pref. amorphous silica-alumina, halogenated alumina, alumina-boron oxide, alumina-BF3 or a zeolite with >=7.5 angstroms pores. Mixts. contg. up to 90% p-xylene at >50% toluene conversion can be obtd. (cf. =65% selectivity at 10-30% conversion in prior art), giving increased yields in the sepn. o the p-isomer, p-Xylene can be oxidised to terephthalic acid for use in polyester prodn.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7438013A FR2291957A1 (en) | 1974-11-19 | 1974-11-19 | Para-xylene prodn from toluene - by acid catalysed transalkylation with polymethyl-benzenes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7438013A FR2291957A1 (en) | 1974-11-19 | 1974-11-19 | Para-xylene prodn from toluene - by acid catalysed transalkylation with polymethyl-benzenes |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2291957A1 true FR2291957A1 (en) | 1976-06-18 |
Family
ID=9145042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7438013A Withdrawn FR2291957A1 (en) | 1974-11-19 | 1974-11-19 | Para-xylene prodn from toluene - by acid catalysed transalkylation with polymethyl-benzenes |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2291957A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0789008A1 (en) * | 1996-02-09 | 1997-08-13 | Institut Français du Pétrole | Process for the dismutation and/or transalkylation of alkylaromatic hydrocarbons using a catalyst based on a mazzite zeolite comprising at least one metal of the groups IIa, IVB, IIB or IVA |
EP0789009A1 (en) * | 1996-02-09 | 1997-08-13 | Institut Français du Pétrole | Process for dismutation and/or transalkylation of alkylaromatic hydrocarbons in presence of two zeolitic catalysts |
-
1974
- 1974-11-19 FR FR7438013A patent/FR2291957A1/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0789008A1 (en) * | 1996-02-09 | 1997-08-13 | Institut Français du Pétrole | Process for the dismutation and/or transalkylation of alkylaromatic hydrocarbons using a catalyst based on a mazzite zeolite comprising at least one metal of the groups IIa, IVB, IIB or IVA |
EP0789009A1 (en) * | 1996-02-09 | 1997-08-13 | Institut Français du Pétrole | Process for dismutation and/or transalkylation of alkylaromatic hydrocarbons in presence of two zeolitic catalysts |
FR2744717A1 (en) * | 1996-02-09 | 1997-08-14 | Inst Francais Du Petrole | USE IN DISMUTATION AND / OR TRANSALKYLATION OF ALKYLAROMATIC HYDROCARBONS OF A ZEOLITE OMEGA CATALYST CONTAINING AT LEAST ONE METAL OF GROUPS IIA IVB, IIB OR IVA |
FR2744718A1 (en) * | 1996-02-09 | 1997-08-14 | Inst Francais Du Petrole | PROCESS FOR DISMUTATION AND / OR TRANSALKYLATION OF ALKYLAROMATIC HYDROCARBONS IN THE PRESENCE OF TWO ZEOLITHIC CATALYSTS |
US5773678A (en) * | 1996-02-09 | 1998-06-30 | Institut Francais Du Petrole | Use of an omega zeolite based catalyst comprising at least one metal from groups IIa, IVb, IIb or IVa for the dismutation and/or transalkylation of alkylaromatic hydrocarbons |
US5789641A (en) * | 1996-02-09 | 1998-08-04 | Institut Francais Du Petrole | Process for dismutation and/or transalkylation of alyklaromatic hydrocarbons in the presence of two zeolitic catalysts |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |