IT1106266B - PROCEDURE FOR WORKING FURTHER SECONDARY PRODUCTS OBTAINED IN THE NITRATION OF AROMATIC COMPOUNDS - Google Patents
PROCEDURE FOR WORKING FURTHER SECONDARY PRODUCTS OBTAINED IN THE NITRATION OF AROMATIC COMPOUNDSInfo
- Publication number
- IT1106266B IT1106266B IT50326/78A IT5032678A IT1106266B IT 1106266 B IT1106266 B IT 1106266B IT 50326/78 A IT50326/78 A IT 50326/78A IT 5032678 A IT5032678 A IT 5032678A IT 1106266 B IT1106266 B IT 1106266B
- Authority
- IT
- Italy
- Prior art keywords
- nitration
- nitric acid
- aromatic compounds
- column
- procedure
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 3
- 238000006396 nitration reaction Methods 0.000 title abstract 3
- 150000001491 aromatic compounds Chemical class 0.000 title abstract 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 3
- 239000007789 gas Substances 0.000 abstract 3
- 229910017604 nitric acid Inorganic materials 0.000 abstract 3
- 239000008346 aqueous phase Substances 0.000 abstract 2
- 150000003934 aromatic aldehydes Chemical class 0.000 abstract 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 125000001931 aliphatic group Chemical group 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 238000002955 isolation Methods 0.000 abstract 1
- 239000012074 organic phase Substances 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/16—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1. A process for the isolation and working up of undesired by-products consisting of aromatic aldehydes and nitrous gases, which are obtained during the nitration in excess nitric acid of optionally substituted aromatic compounds containing aliphatic side-chains by partial oxidation of the side-chains, characterized in that at the same time as the rectification of the nitro-aromatic compound, the optionally substituted aromatic aldehyde is distilled off over the head of the column as an azeotrope with water by maintaining an aqueous phase within the rectification column in addition to the organic phase, and after oxidation to the corresponding carboxylic acid is discharged and the nitrous gases contained in the off-gas are reconverted into nitric acid in an adsorption column in an aqueous phase obtained in the nitration process, which can optionally contain nitric acid, in counter-current in the presence of oxygen.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19772732558 DE2732558A1 (en) | 1977-07-19 | 1977-07-19 | PROCESS FOR THE PROCESSING OF BY-PRODUCTS OBTAINED IN THE NITRATION OF AROMATES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT7850326A0 IT7850326A0 (en) | 1978-07-17 |
| IT1106266B true IT1106266B (en) | 1985-11-11 |
Family
ID=6014279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT50326/78A IT1106266B (en) | 1977-07-19 | 1978-07-17 | PROCEDURE FOR WORKING FURTHER SECONDARY PRODUCTS OBTAINED IN THE NITRATION OF AROMATIC COMPOUNDS |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0000491B1 (en) |
| DE (1) | DE2732558A1 (en) |
| IT (1) | IT1106266B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9173504B2 (en) | 2005-09-12 | 2015-11-03 | Rtc Industries, Inc. | Product management display system |
| EP2791199B1 (en) | 2011-12-16 | 2015-09-16 | 3M Innovative Properties Company | Oxirane-containing bisanhydrohexitol derivatives and uses thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE700642C (en) * | 1935-07-24 | 1940-12-28 | Lignose Sprengstoffwerke G M B | Process for cleaning technical mononitrobenzene, mononitrotoluene, similar aromatic mononitro hydrocarbons or their substitution products |
-
1977
- 1977-07-19 DE DE19772732558 patent/DE2732558A1/en not_active Withdrawn
-
1978
- 1978-07-11 EP EP78100350A patent/EP0000491B1/en not_active Expired
- 1978-07-17 IT IT50326/78A patent/IT1106266B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| EP0000491B1 (en) | 1980-10-01 |
| EP0000491A1 (en) | 1979-02-07 |
| IT7850326A0 (en) | 1978-07-17 |
| DE2732558A1 (en) | 1979-02-01 |
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