Hydroformylation of diisobutylene using thermoregulated phase-separable phosphine rhodium complex catalyst

✍ Scribed by Yanhua Wang; Jingyang Jiang; Fang Cheng; Zilin Jin

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 75 KB
• Volume: 188
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(02)00338-2

✦ Synopsis

Based on the critical solution temperature (CST) of non-ionic phosphine ligand, a thermoregulated phase-separable catalyst formed in situ from P[p-C 6 H 4 O(CH 2 CH 2 O) n H] 3 (PETPP, n = 10) and RhCl 3 •3H 2 O was applied for the first time in the hydroformylation of diisobutylene. It was found that the reaction temperature, total pressure and reaction time, as well as the P/Rh molar ratio had great influence on the reactivity of the catalyst. Under the optimum conditions, the conversion of diisobutylene and yield of aldehyde are 93.1 and 82.5%, respectively. Recycling of the PETPP/Rh complex catalyst up to three times without loss of activity has been observed.