GB1009555A - Production of xylene - Google Patents
Production of xyleneInfo
- Publication number
- GB1009555A GB1009555A GB47715/62A GB4771562A GB1009555A GB 1009555 A GB1009555 A GB 1009555A GB 47715/62 A GB47715/62 A GB 47715/62A GB 4771562 A GB4771562 A GB 4771562A GB 1009555 A GB1009555 A GB 1009555A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alumina
- base
- catalyst
- chromium oxide
- hydrocarbons
- 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
- 239000008096 xylene Substances 0.000 title abstract 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 title 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 6
- 239000002585 base Substances 0.000 abstract 4
- 239000003054 catalyst Substances 0.000 abstract 4
- 150000002430 hydrocarbons Chemical class 0.000 abstract 4
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 abstract 3
- 229910000423 chromium oxide Inorganic materials 0.000 abstract 3
- 229930195733 hydrocarbon Natural products 0.000 abstract 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 2
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 abstract 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 abstract 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 abstract 1
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 238000006356 dehydrogenation reaction Methods 0.000 abstract 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000010348 incorporation Methods 0.000 abstract 1
- 239000001282 iso-butane Substances 0.000 abstract 1
- -1 isobutane Chemical class 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 239000011591 potassium Substances 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- PXLIDIMHPNPGMH-UHFFFAOYSA-N sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 abstract 1
- 150000003738 xylenes Chemical class 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/26—Chromium
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
- C07C5/373—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen with simultaneous isomerisation
- C07C5/393—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen with simultaneous isomerisation with cyclisation to an aromatic six-membered ring, e.g. dehydrogenation of n-hexane to benzene
- C07C5/41—Catalytic processes
- C07C5/412—Catalytic processes with metal oxides or metal sulfides
-
- 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
Abstract
Xylenes are produced by passing a charge comprising C8 acylic hydrocarbons with o without C4 hydrocarbons, e.g. isobutane, at 510-594 DEG C. and pressures up to atmospheric over a catalyst of eta-alumina containing 15-25% of chromium oxide, the alumina base being obtained by the dehydration of an alumina hydrate containing at least 60% beta-trihydrate. The catalyst may contain alkali metal equivalent to 0.6-1.5% of Na2O. The charge may comprise 2,2,4-trimethyl substituted C5 hydrocarbon chains which yield mainly p-xylene and/or diisobutylenes which may be obtained by the dimerisation of iso-C4 hydrocarbons separated from the reaction product.ALSO:A dehydrogenation catalyst comprises eta-alumina and 15-25% of chromium oxide with or without 0,6-1,5% of sodium calculated as Na2O or 0,9-2,3% of potassium calculated as K2O. The alumina base is prepared by the deyhdration of an alumina hydrate containing at least 60% of beta-trihydrate. Before incorporation of the chromium oxide, the dehydrated base may be steam treated to give a surface area of 100-300 m.2/g. The catalyst may be prepared by heating the base which has been soaked in chromic acid and sodium chromate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB47715/62A GB1009555A (en) | 1962-12-18 | 1962-12-18 | Production of xylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB47715/62A GB1009555A (en) | 1962-12-18 | 1962-12-18 | Production of xylene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1009555A true GB1009555A (en) | 1965-11-10 |
Family
ID=10446006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB47715/62A Expired GB1009555A (en) | 1962-12-18 | 1962-12-18 | Production of xylene |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1009555A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996035498A1 (en) * | 1995-05-10 | 1996-11-14 | Denim Engineering, Inc. | Method and apparatus for removing ethylbenzene from mixed xylenes stream |
| US6342649B1 (en) * | 1995-05-10 | 2002-01-29 | Denim Engineering, Inc | Method for removing ethylbenzene from a para-xylene feed stream |
| WO2005054160A1 (en) * | 2003-11-25 | 2005-06-16 | E. I. Du Pont De Nemours And Company | Process for the preparation of xylene |
-
1962
- 1962-12-18 GB GB47715/62A patent/GB1009555A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996035498A1 (en) * | 1995-05-10 | 1996-11-14 | Denim Engineering, Inc. | Method and apparatus for removing ethylbenzene from mixed xylenes stream |
| GB2304349A (en) * | 1995-05-10 | 1997-03-19 | Denim Engineering Inc | Method and apparatus for removing ethylbenzene from mixed xylenes stream |
| GB2304349B (en) * | 1995-05-10 | 1998-09-16 | Denim Engineering Inc | Method and apparatus for removing ethylbenzene from mixed xylenes stream |
| US6342649B1 (en) * | 1995-05-10 | 2002-01-29 | Denim Engineering, Inc | Method for removing ethylbenzene from a para-xylene feed stream |
| WO2005054160A1 (en) * | 2003-11-25 | 2005-06-16 | E. I. Du Pont De Nemours And Company | Process for the preparation of xylene |
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