GB913444A - Production of aniline - Google Patents
Production of anilineInfo
- Publication number
- GB913444A GB913444A GB146761A GB146761A GB913444A GB 913444 A GB913444 A GB 913444A GB 146761 A GB146761 A GB 146761A GB 146761 A GB146761 A GB 146761A GB 913444 A GB913444 A GB 913444A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitrobenzene
- catalyst
- layer
- hydrogenation
- atm
- 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
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/30—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds
- C07C209/32—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups
- C07C209/36—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups by reduction of nitro groups bound to carbon atoms of six-membered aromatic rings in presence of hydrogen-containing gases and a catalyst
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
In a process for the production of aniline, or an amine of an alkyl benzene, by the hydrogenation of nitrobenzene, or an alkylated nitrobenzene e.g. nitrotoluene or nitroxylene, using a metal hydrogenation catalyst in a fluidised layer, preferably provided with cooling means, the nitrobenzene is introduced into the layer at least partly in liquid phase at a plurality of points at least some of which are at different heights. The hydrogen and nitrobenzene are introduced into the reaction zone in a molar ratio of at least 3 : 1. The reaction is preferably carried out at a pressure of 4-25 atmospheres at temperatures between 200 and 400 DEG C. The hydrogen may be introduced with the nitrobenzene e.g. by using a two-component nozzle, or at the bottom of the reaction vessel. The points of introduction of the nitrobenzene are preferably distributed over the lower three-quarters of the fluidised catalyst layer. When a reactor of large crosssectional area is used, several inlets may be provided at the same level. In examples, the hydrogenation is carried out at 275 DEG C. and at 300 DEG C. at 10 atm. using a Cu on alumina catalyst and at 280-290 DEG C. at 5 atm. using Cu with traces of Cr, Ba, and Zn on silicic acid as catalyst. An Ni/Mo catalyst may also be used.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB56258A DE1114820B (en) | 1960-01-15 | 1960-01-15 | Process for the production of aniline |
Publications (1)
Publication Number | Publication Date |
---|---|
GB913444A true GB913444A (en) | 1962-12-19 |
Family
ID=6971264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB146761A Expired GB913444A (en) | 1960-01-15 | 1961-01-13 | Production of aniline |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE599140A (en) |
DE (1) | DE1114820B (en) |
GB (1) | GB913444A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105862072A (en) * | 2016-04-19 | 2016-08-17 | 盐城工学院 | Novel technical method for reducing nitrobenzene through zinc |
US10513487B2 (en) | 2014-06-24 | 2019-12-24 | Covestro Deutschland Ag | Methods for producing chemical products with operation interruptions |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL178963C (en) * | 1972-04-22 | 1986-06-16 | Sumitomo Chemical Co | PROCESS FOR PREPARING ANILINE BY HYDROGENATION OF NITROBENZENE. |
DE2708914C2 (en) * | 1977-03-02 | 1987-05-14 | Dynamit Nobel Ag, 5210 Troisdorf | Process and apparatus for producing hydrazobenzene |
DE4110457A1 (en) * | 1991-03-30 | 1992-10-01 | Basf Ag | PROCESS FOR THE PREPARATION OF AROMATIC AMINES |
US8044244B2 (en) | 2006-09-19 | 2011-10-25 | Basf Se | Process for preparing aromatic amines in a fluidized-bed reactor |
DE102009019436A1 (en) | 2009-04-29 | 2010-11-04 | Bayer Materialscience Ag | Process for the preparation of aromatic amines |
CN102574771B (en) * | 2009-10-20 | 2014-04-16 | 巴斯夫欧洲公司 | Process for preparation and preferably distillative processing of diphenylmethane diisocyanate (MDI) |
KR20130041145A (en) | 2010-07-30 | 2013-04-24 | 바이엘 인텔렉쳐 프로퍼티 게엠베하 | Method for continuously producing nitrobenzene |
EP2641892A1 (en) | 2012-03-23 | 2013-09-25 | Bayer MaterialScience AG | Method for cleaning aniline from gas phase hydrogenation |
EP2653462A1 (en) | 2012-04-16 | 2013-10-23 | Bayer MaterialScience AG | Method for improved starting the reaction when producing aromatic amines from nitroaromatics |
EP2653461A1 (en) | 2012-04-16 | 2013-10-23 | Bayer MaterialScience AG | Method for improved stopping of the reaction when producing aromatic amines from nitroaromatics |
HUE055741T2 (en) | 2016-08-17 | 2021-12-28 | Covestro Intellectual Property Gmbh & Co Kg | Method and device for the production of various chemical products |
EP3953322A1 (en) | 2019-04-12 | 2022-02-16 | Basf Se | Catalyst system for producing aromatic amines |
-
1960
- 1960-01-15 DE DEB56258A patent/DE1114820B/en active Pending
-
1961
- 1961-01-13 GB GB146761A patent/GB913444A/en not_active Expired
- 1961-01-16 BE BE599140A patent/BE599140A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10513487B2 (en) | 2014-06-24 | 2019-12-24 | Covestro Deutschland Ag | Methods for producing chemical products with operation interruptions |
CN105862072A (en) * | 2016-04-19 | 2016-08-17 | 盐城工学院 | Novel technical method for reducing nitrobenzene through zinc |
Also Published As
Publication number | Publication date |
---|---|
DE1114820B (en) | 1961-10-12 |
BE599140A (en) | 1961-07-17 |
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