Increasing selectivity of the hydroformylation in a miniplant: Catalyst, solvent, and olefin recycle in two loops

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• 作者：J. M. Dreimann ; H. Warmeling ; J. N. Weimann ; K. Kü ; nnemann ; A. Behr and A. J. Vorholt
• 刊名：AIChE Journal
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：62
• 期：12
• 页码：4377-4383
• 全文大小：670K
• ISSN：1547-5905

文摘

The application of thermomorphic solvent systems offers the combination of homogeneous catalysis in a single phase and catalyst recovery via phase separation. To increase economic feasibility the minimization of waste streams and side reactions is desired. For this, a continuous process for the hydroformylation of 1-dodecene in the solvent system DMF/n-decane is shown. While the Rh/Biphephos catalyst is recycled in DMF in a first loop, the n-decane and remaining olefins are separated from the product via distillation to form the second loop. In this process the need for additional solvent supply and the isomerization reaction of 1-dodecene is reduced significantly. The reaction toward internal olefins decreases from initially 15 to 3%. The stable hydroformylation process with a yield of the linear hydroformylation product of 55% and l/b-ratio of 95/5 is shown for 120 h.