http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-781405-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_04650c4315071ee8af7d26e3441a53b1 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2208-00274 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2208-00176 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2208-0053 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12C11-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-175 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J8-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-17 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-62 |
| filingDate | 1955-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1957-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-781405-A |
| titleOfInvention | Hydrogenation of unsaturated carbonyl compounds |
| abstract | Catalysts for use in the hydrogenation of unsaturated carbonyl compounds comprise copper with or without an oxide of an element such as chromium, barium or zinc which acts as a promoter and stabilizer. Such catalysts may be prepared by the reduction of pellets of copper oxide or hydroxide mixed with one or more of the other oxides or the corresponding hydroxides. Alternatively the catalyst may be prepared by reducing with hydrogen a coating, comprising a mixture of the oxide or hydroxide of copper and of one of the metals specified above, previously deposited on an inactive carrier, such as inert alumina or kieselguhr. Other copper catalysts may be used, e.g. the product obtained by reducing with hydrogen mixtures of copper oxide and sodium silicate containing, for example, 10-20 per cent of sodium silicate. In an example unsaturated carbonyl compounds are hydrogenated using as catalyst porous inert alumina tablets coated with a mixture of freshly reduced copper and chromium oxide.ALSO:Ethylenically unsaturated carbonyl compounds are hydrogenated to saturated carbonyl compounds or alcohols or both by a process comprising continuously passing a feed of hydrogen and the unsaturated compound into contact with a hydrogenation catalyst, recycling part of the reacted mixture which has left the catalyst by mixing it with the feed and withdrawing the remainder of the mixture from the system. Suitable unsaturated carbonyl compounds are, for example, aliphatic aldehydes such as crotonaldehyde, acrolein, methacrolein and 2-ethylhex-2-enal; aromatic aldehydes such as cinnamaldehyde; and ketones such as mesityl oxide, methyl vinyl ketone and methyl isopropenyl ketone. Preferably a copper base catalyst is used, e.g. a copper catalyst which contains an oxide of an element such as chromium, barium or zinc, which acts as a promoter and stabilizer. In the examples: (a) crotonaldehyde is hydrogenated in the presence of a catalyst consisting of alumina coated with freshly-reduced copper and chromic oxide, some of the product being recycled, to give a mixture of butyraldehyde and butanol; (b) mesityl oxide is similarly hydrogenated to methyl isobutyl ketone; (c) crotonaldehyde is hydrogenated in the presence of a copper catalyst to give butyraldehyde and butanol, all of the butyraldehyde being recycled to the feed; and (d) crotonaldehyde is similarly hydrogenated to give butyraldehyde and butanol, all of the butanol being recycled to the feed. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0753496-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4451677-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0753496-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-1152398-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2489304-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4876402-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-1196632-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0073129-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5831135-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5728891-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4762817-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2982789-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5756856-A |
| priorityDate | 1954-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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Total number of triples: 79.