GB822999A - Catalytic cracking of methyl isopropenyl ketone dimer to methyl isopropenyl ketone - Google Patents
Catalytic cracking of methyl isopropenyl ketone dimer to methyl isopropenyl ketoneInfo
- Publication number
- GB822999A GB822999A GB3025656A GB3025656A GB822999A GB 822999 A GB822999 A GB 822999A GB 3025656 A GB3025656 A GB 3025656A GB 3025656 A GB3025656 A GB 3025656A GB 822999 A GB822999 A GB 822999A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dimer
- isopropenyl ketone
- methyl isopropenyl
- monomer
- cracking
- 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
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
- C07C45/673—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by change of size of the carbon skeleton
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
Methyl isopropenyl ketone dimer is converted into its monomer by heating the dimer at a temperature between 196 DEG and 600 DEG C. in the presence of a catalytic amount of a catalyst capable of catalysing the cracking or dehydrogenation of hydrocarbons at an elevated temperature, and recovering methyl isopropenyl ketone monomer from the catalysate. Suitably, the dimer and a cracking catalyst are maintained at about the B.P. of the dimer and the resulting monomer distilled off through a column. Alternatively, the dimer may be passed in vapour phase over a heated dehydrogenating catalyst and the products worked up to recover the monomer. Unchanged dimer may be recycled. Specified cracking catalysts are platinum group metals, activated Al2O3 and activated N : and specified dehydrogenating catalysts are activated Al2O3, a Ni-Ca-PO4, MoO3 on Al2O3 and ferric oxide containing catalysts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3025656A GB822999A (en) | 1957-09-26 | 1957-09-26 | Catalytic cracking of methyl isopropenyl ketone dimer to methyl isopropenyl ketone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3025656A GB822999A (en) | 1957-09-26 | 1957-09-26 | Catalytic cracking of methyl isopropenyl ketone dimer to methyl isopropenyl ketone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB822999A true GB822999A (en) | 1959-11-04 |
Family
ID=10304766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3025656A Expired GB822999A (en) | 1957-09-26 | 1957-09-26 | Catalytic cracking of methyl isopropenyl ketone dimer to methyl isopropenyl ketone |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB822999A (en) |
-
1957
- 1957-09-26 GB GB3025656A patent/GB822999A/en not_active Expired
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