| 摘要 |
1,205,027. Oxo process. BRITISH PETROLEUM CO. Ltd. 22 March, 1968 [30 March, 1967], No. 14471/67. Heading C2C. A process for the hydroformylation of olefins to aldehydes with substantially no simultaneous formation of alcohols, comprises hydroformylating an olefin with carbon monoxide and hydrogen at elevated temperature and at pressure greater than 100 p.s.i.g. in the presence of not more than 1 mole per 3600 moles of the feed of a square planar complex of monovalent rhodium containing at least one carboxylate ligand. The catalyst/olefin mole ratio should preferably lie between 1: 3,600 and 1: 360,000. Complexing ligands co-ordinating through nitrogen, phosphorus, arsenic, antimony or sulphur may be contained in the rhodium complex as may be one or more carbon monoxide ligands. To assist the stability of the catalyst on recycle a carboxylic acid, preferably corresponding to the carboxylate ligand, may be present. The process is preferably carried out at a temperature between 40‹ and 100‹ C. using a hydrogen to carbon monoxide feed ratio between 4: 1 and 1: 4. In the examples hexene (1) is the olefin used. |
