GB821211A - Extended-life fluorination catalyst - Google Patents
Extended-life fluorination catalystInfo
- Publication number
- GB821211A GB821211A GB2354/58A GB235458A GB821211A GB 821211 A GB821211 A GB 821211A GB 2354/58 A GB2354/58 A GB 2354/58A GB 235458 A GB235458 A GB 235458A GB 821211 A GB821211 A GB 821211A
- Authority
- GB
- United Kingdom
- Prior art keywords
- catalyst
- gave
- ccl3
- referred
- chloro
- 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
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
- C07C17/206—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being HX
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
Abstract
A fluorination catalyst, stated to be of extended life compared with constituent (a) alone, comprises (a) chromium oxyfluoride (preferably 5-95, particularly 80-20, especially 80%) and (b) aluminium fluoride (balance). The catalyst may be pelleted with, e.g., graphite and sugar, and may be regenerated with oxygen at about 500 DEG C., when poisoned. By means of this catalyst, various chloro- and bromocompounds (see Group IV (b)) are reacted with HF, the halogen in these compounds thereby being replaced with fluorine. Specification 790,335 is referred to.ALSO:Halogen compounds are fluorinated with HF in presence of chromium oxyfluoride-aluminium fluoride catalyst. In examples: CH2Cl2 gave CH2F2 and CH2ClF; CH3.CCl3 gave CH3.CF3, CH3.CClF2, CH2 : CClF and CH2 : CCl2 CH2Cl.CH2.CCl3 gave CH2=CH.CF3. Other starting materials mentioned: chloro- and bromo-substituted derivatives of methane, ethane, propane, butane, hexane, propylene, butylenes, pentylenes, methylacetylenes, ethylacetylenes and pentadienes. Specification 790,335 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US821211XA | 1957-02-06 | 1957-02-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB821211A true GB821211A (en) | 1959-10-07 |
Family
ID=22169205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2354/58A Expired GB821211A (en) | 1957-02-06 | 1958-01-23 | Extended-life fluorination catalyst |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB821211A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999062851A1 (en) * | 1998-06-02 | 1999-12-09 | E.I. Du Pont De Nemours And Company | Processes for the production of hexafluoropropene and optionally other halogenated hydrocarbons containing fluorine |
US6540933B1 (en) | 1998-06-02 | 2003-04-01 | E. I. Du Pont De Nemours And Company | Process for the production of hexafluoropropylene from CC1F2CC1FCF3 and azeotropes of CC1F2CC1FCF3 with HF |
-
1958
- 1958-01-23 GB GB2354/58A patent/GB821211A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999062851A1 (en) * | 1998-06-02 | 1999-12-09 | E.I. Du Pont De Nemours And Company | Processes for the production of hexafluoropropene and optionally other halogenated hydrocarbons containing fluorine |
US6329559B1 (en) | 1998-06-02 | 2001-12-11 | E. I. Du Pont De Nemours And Company | Processes for the production of hexafluoropropene and optionally other halogenated hydrocarbons containing fluorine |
US6540933B1 (en) | 1998-06-02 | 2003-04-01 | E. I. Du Pont De Nemours And Company | Process for the production of hexafluoropropylene from CC1F2CC1FCF3 and azeotropes of CC1F2CC1FCF3 with HF |
US6683226B2 (en) | 1998-06-02 | 2004-01-27 | E. I. Du Pont De Nemours And Company | Process for the production of hexafluoropropylene from CClF2CClFCF3 and azeotropes of CClF2CClFCF3 with HF |
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