http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-656860-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b080e878f1f7ff0e7bb1f46e62fa1ee3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c28d07957c2af4e879fced3eb3b0153b |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-62 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-62 |
| filingDate | 1948-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1951-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-656860-A |
| titleOfInvention | Improvements in or relating to the manufacture of butyraldehyde |
| abstract | A process for the manufacture of butyraldehyde comprises the hydrogenation of crotonaldehyde at an elevated temperature in the presence of a catalyst capable of hydrogenating crotonaldehyde to butanol, wherein crotonaldehyde vapours are passed over the catalyst in admixture with butanol vapours and hydrogen, the butanol being subsequently recovered from the reaction products and recycled to the reaction zone. The preferred catalyst is copper, supported on kieselguhr, produced by reduction in situ with hydrogen of copper hydroxide precipitated by alkali on kieselguhr. The crotonaldehyde may be anhydrous or wet, e.g. the product from aldol crotonization. The crude hydrogenation product may be fractionated, butanol containing a small amount of crotonaldehyde being returned to the reaction. In the examples, crotonaldehyde and butanol vapours are passed with hydrogen over a heated copper on kieselguhr catalyst at substantially atmospheric pressure and the products fractionated. Butyraldehyde, small amounts of butanol and heavy products, mostly butyl butyrate, are produced and the recovered butanol is recycled. The catalyst is obtained by hot precipitation of copper hydroxide from a solution of copper nitrate, in which is suspended keiselguhr, with caustic soda after which the product is filtered, washed and pelleted and reduced with hydrogen in the catalyst tube. For comparison, two runs in the absence of butanol are described, larger amounts of butanol being produced. |
| priorityDate | 1948-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.