GB764338A - Improvements in or relating to preparation of m- and p-diisopropylbenzenes - Google Patents
Improvements in or relating to preparation of m- and p-diisopropylbenzenesInfo
- Publication number
- GB764338A GB764338A GB12055/54A GB1205554A GB764338A GB 764338 A GB764338 A GB 764338A GB 12055/54 A GB12055/54 A GB 12055/54A GB 1205554 A GB1205554 A GB 1205554A GB 764338 A GB764338 A GB 764338A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diisopropylbenzene
- acid
- cumene
- aluminium chloride
- temperature
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
- C07C15/02—Monocyclic hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
- C07C2/54—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition of unsaturated hydrocarbons to saturated hydrocarbons or to hydrocarbons containing a six-membered aromatic ring with no unsaturation outside the aromatic ring
- C07C2/64—Addition to a carbon atom of a six-membered aromatic ring
- C07C2/66—Catalytic processes
-
- 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
- C07C6/123—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 only one hydrocarbon
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- C07C2527/06—Halogens; Compounds thereof
- C07C2527/125—Compounds comprising a halogen and scandium, yttrium, aluminium, gallium, indium or thallium
- C07C2527/126—Aluminium chloride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A diisopropylbenzene substantially free from o-diisopropylbenzene and trimethylindane is obtained by propylating benzene with a propylene containing gas containing no higher molecular weight unsaturates in the presence of an acid-acting condensation catalyst to produce substantially pure cumene, which is contacted with 0.1 to 2.0 mols. per cent of aluminium chloride at a temperature of 65-115 DEG C. until the reaction mixture contains a substantial amount of m-diisopropylbenzene, and separating the diisopropylbenzene from the reaction mixture by distillation. The propylene containing gas may be a refinery gas which contains also ethylene, but must be free from butene or butadiene. The acid acting catalyst may be 80 per cent sulphuric acid, phosphoric acid on kiesleguhr, ferric or cupric pyrrophosphate, aluminium chloride, zinc chloride, acid clays, hydrogen fluoride or boron trifluoride. In the second stage, anhydrous aluminium chloride powder is added to the cumene at a temperature which is preferably below 50 DEG C. and the temperature slowly allowed to rise to 65-115 DEG C. The percentage composition of the resulting mixture is approximately benzene 17, cumene 51, m-diisopropylbenzene 20, p-diisopropylbenzene 10, and triisopropylbenzene 2. Specification 763,179 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US764338XA | 1953-06-29 | 1953-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB764338A true GB764338A (en) | 1956-12-28 |
Family
ID=22131973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12055/54A Expired GB764338A (en) | 1953-06-29 | 1954-04-26 | Improvements in or relating to preparation of m- and p-diisopropylbenzenes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB764338A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0149508A1 (en) * | 1984-01-04 | 1985-07-24 | Mobil Oil Corporation | Production of para-diisopropylbenzene and use of the same in the production of hydroquinone |
WO2002088052A1 (en) * | 2001-04-27 | 2002-11-07 | Exxonmobil Chemical Patents Inc. | Production of diisopropylbenzene |
-
1954
- 1954-04-26 GB GB12055/54A patent/GB764338A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0149508A1 (en) * | 1984-01-04 | 1985-07-24 | Mobil Oil Corporation | Production of para-diisopropylbenzene and use of the same in the production of hydroquinone |
WO2002088052A1 (en) * | 2001-04-27 | 2002-11-07 | Exxonmobil Chemical Patents Inc. | Production of diisopropylbenzene |
US6933419B2 (en) | 2001-04-27 | 2005-08-23 | Exxonmobil Oil Corporation | Production of diisopropylbenzene |
US7432405B2 (en) | 2001-04-27 | 2008-10-07 | Exxonmobil Oil Corporation | Production of diisopropylbenzene by disproportion of cumene in the presence of a TEA-mordenite catalyst |
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