GB741203A - Improvements in or relating to the dehydrochlorination of benzene hexachloride - Google Patents
Improvements in or relating to the dehydrochlorination of benzene hexachlorideInfo
- Publication number
- GB741203A GB741203A GB26835/53A GB2683553A GB741203A GB 741203 A GB741203 A GB 741203A GB 26835/53 A GB26835/53 A GB 26835/53A GB 2683553 A GB2683553 A GB 2683553A GB 741203 A GB741203 A GB 741203A
- Authority
- GB
- United Kingdom
- Prior art keywords
- catalyst
- benzene hexachloride
- lignite
- carbon
- dehydrochlorination
- 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
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
An improved process for the manufacture of 1,2,4-trichlorobenzene comprises the dehydrochlorination of benzene hexachloride by contacting it at an elevated temperature with a catalyst comprising elementary carbon having a high surface-to-volume ratio characterized in that the catalyst is lignite activated carbon. The catalyst is prepared by heating the lignite to elevated temperatures in the absence of sufficient oxygen to convert the material to carbon monoxide or carbon dioxide. Reaction temperatures of about 200 DEG to about 450 DEG C. are referred to. The pressure may be atmospheric, or as low as about 100 mm. or as high as 3 or 4 atmospheres. In examples, benzene hexachloride vapour (mixed with 1,2,3- and 1,2,4-trichlorobenzenes, to decrease the space velocity of the benzene hexachloride and minimize carbonization) is passed over activated lignite catalyst heated to 350 DEG C. and the catalyst life compared with that of charcoal and ordinary activated carbon catalysts.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US741203XA | 1952-11-12 | 1952-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB741203A true GB741203A (en) | 1955-11-30 |
Family
ID=22117850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26835/53A Expired GB741203A (en) | 1952-11-12 | 1953-09-30 | Improvements in or relating to the dehydrochlorination of benzene hexachloride |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB741203A (en) |
-
1953
- 1953-09-30 GB GB26835/53A patent/GB741203A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1096731A (en) | Improvements in addition agent containing vanadium carbide | |
| GB868301A (en) | Process for making aluminium nitride | |
| GB583477A (en) | Improvements in or relating to the manufacture of phosgene | |
| GB741203A (en) | Improvements in or relating to the dehydrochlorination of benzene hexachloride | |
| SE8100309L (en) | PROCEDURE FOR COMPLETE GASING OF COAL MATERIALS | |
| US2139219A (en) | Process for producing tetrachlorethylene | |
| GB1002678A (en) | Production of ethylene oxide and recovery of nitrogen | |
| GB356838A (en) | ||
| GB960332A (en) | Process for the preparation of oxidation products of propylene | |
| GB584662A (en) | Improvements in or relating to the production of vinyl cyanide | |
| US2028765A (en) | Synthesis of formic acid | |
| GB727318A (en) | Manufacture of an unsaturated aldehyde | |
| ES389008A1 (en) | Process for the preparation of acetic acidby catalytic oxidation of olefins in the gaseous phase | |
| GB702221A (en) | Improvements in or relating to the production of oxygen containing organic compoundsfrom carbon monoxide, hydrogen and olefins | |
| GB964127A (en) | ||
| US1689858A (en) | Process for the production of hydrogen of great purity | |
| GB730470A (en) | Improvements in or relating to a process for the recovery of vanadium from carbon-and vanadium-contaminated catalysts | |
| GB753661A (en) | Improvements in and relating to the production of hydrogen-containing gases | |
| GB1032750A (en) | Improvements in or relating to the treatment of gases | |
| GB851570A (en) | Process of purifying maleic anhydride | |
| GB706552A (en) | Manufacture of acrolein | |
| GB675481A (en) | Improvements in and relating to the production of ethylene oxide | |
| GB758750A (en) | Dechlorination of octachlorocyclopentene to hexachlorocyclopentadiene | |
| GB302321A (en) | Improved manufacture of trichlorethylene | |
| GB642038A (en) | A process of manufacturing humus products |