ES405121A1 - Production of aryl-substituted n-paraffins - Google Patents
Production of aryl-substituted n-paraffinsInfo
- Publication number
- ES405121A1 ES405121A1 ES405121A ES405121A ES405121A1 ES 405121 A1 ES405121 A1 ES 405121A1 ES 405121 A ES405121 A ES 405121A ES 405121 A ES405121 A ES 405121A ES 405121 A1 ES405121 A1 ES 405121A1
- Authority
- ES
- Spain
- Prior art keywords
- paraffin
- aryl
- substituted
- normal
- normal paraffin
- 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
- C07C15/107—Monocyclic hydrocarbons having saturated side-chain containing at least six carbon atoms, e.g. detergent alkylates
-
- 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
- C07C5/327—Formation of non-aromatic carbon-to-carbon double bonds only
- C07C5/333—Catalytic processes
- C07C5/3335—Catalytic processes with metals
- C07C5/3337—Catalytic processes with metals of the platinum group
Abstract
An improved process for obtaining an aryl-substituted normal paraffin in which (i) a normal paraffin and hydrogen are contacted with a dehydrogenation catalyst in a dehydrogenation zone, under conditions sufficient to produce a normal monoolefin having a number of carbon atoms equal to the precursor paraffin in mixture with the normal paraffin; (ii) the mixture of normal monoolefin normal paraffin is contacted with an alcohol catalyst and a monocyclic aromatic compound in an alcohol zone, under conditions sufficient to produce an aryl-substituted normal paraffin in mixture with monocyclic aromatic compound and normal paraffin ; (iii) the mixture of aryl-substituted normal paraffin, monocyclic aromatic compound and normal paraffin is separated in a separation zone, under conditions sufficient to provide a normal paraffin recycle stream containing small amounts of aryl-substituted normal paraffin; and (iv) the normal paraffin recycle stream is recycled to the dehydrogenation zone, whereby the aryl-substituted paraffin causes deactivation of the dehydrogenation catalyst, characterized in that the improvement comprises controlling the conditions in the zone in such a way of separation that the proportion of paraffin substituted by aryl in the paraffin recycle is maintained at a level such that the paraffin that is passed to the dehydrogenation zone contains less than 0.1% by weight of paraffin substituted by aryl, thus decreasing the deactivation rate of the dehydrogenation catalyst. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16614171A | 1971-07-26 | 1971-07-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES405121A1 true ES405121A1 (en) | 1975-07-01 |
Family
ID=22601996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES405121A Expired ES405121A1 (en) | 1971-07-26 | 1972-07-24 | Production of aryl-substituted n-paraffins |
Country Status (9)
| Country | Link |
|---|---|
| AR (1) | AR201267A1 (en) |
| BR (1) | BR7205006D0 (en) |
| CA (1) | CA963025A (en) |
| DE (1) | DE2236508A1 (en) |
| ES (1) | ES405121A1 (en) |
| FR (1) | FR2147200B1 (en) |
| GB (1) | GB1389439A (en) |
| IT (1) | IT961689B (en) |
| TR (1) | TR16909A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2186783A3 (en) * | 2010-01-27 | 2010-09-01 | Shell Internationale Research Maatschappij B.V. | Process for the preparation of olefins |
-
1972
- 1972-07-24 ES ES405121A patent/ES405121A1/en not_active Expired
- 1972-07-25 CA CA147,880A patent/CA963025A/en not_active Expired
- 1972-07-25 IT IT5174572A patent/IT961689B/en active
- 1972-07-25 GB GB3469472A patent/GB1389439A/en not_active Expired
- 1972-07-26 BR BR500672A patent/BR7205006D0/en unknown
- 1972-07-26 DE DE19722236508 patent/DE2236508A1/en active Pending
- 1972-07-26 AR AR24327372A patent/AR201267A1/en active
- 1972-07-26 FR FR7226850A patent/FR2147200B1/fr not_active Expired
- 1972-07-26 TR TR1690972A patent/TR16909A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2236508A1 (en) | 1973-03-01 |
| IT961689B (en) | 1973-12-10 |
| GB1389439A (en) | 1975-04-03 |
| FR2147200A1 (en) | 1973-03-09 |
| BR7205006D0 (en) | 1973-05-31 |
| FR2147200B1 (en) | 1976-08-13 |
| AR201267A1 (en) | 1975-02-28 |
| TR16909A (en) | 1973-09-01 |
| CA963025A (en) | 1975-02-18 |
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