The stability of a polymer-supported rhodium complex in the batch hydroformylation of 1-hexene. II. Effect of reaction conditions

✍ Scribed by Weng Junfan; Sun Juntan; Li Hong; He Binglin (Ping Lum Ho)

• Publisher: Elsevier Science
• Year: 1990
• Weight: 462 KB
• Volume: 12
• Category: Article
• ISSN: 0923-1137
• DOI: 10.1016/0923-1137(90)90120-s

✦ Synopsis

The stability of a polymer-supported rhodium complex has been studied in a batch process for hydroformylation of 1-hexene, using [Rh(CO)2CI ] 2 as the catalytic precursor and poly(vinylbenzyl diethylenetriamine) as the polymeric ligand. It has been found that the reaction conditions, temperature, pressure, solvent and reaction time etc., have considerable influence on the degree of rhodium elution. Elution of rhodium is serious under normal conditions but low in certain blank experiments. These results indicate that rhodium elution is probably related to the substitution of a low molecular ligand for the polymeric ligand in the catalytic cycle. Several possible mechanisms of rhodium elution based on these results are proposed.