通过有机溶剂纳滤从水性多组分混合物中回收和分离均相催化剂
Recycling and Separation of Homogeneous Catalyst from Aqueous Multicomponent Mixture by Organic Solvent Nanofiltration.
作者信息
Schnoor J-Kilian, Bettmer Jens, Kamp Johannes, Wessling Matthias, Liauw Marcel A
机构信息
Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany.
Chair of Chemical Process Engineering, Aachener Verfahrenstechnik, RWTH Aachen University, Forckenbeckstrasse 51, 52074 Aachen, Germany.
出版信息
Membranes (Basel). 2021 May 31;11(6):423. doi: 10.3390/membranes11060423.
Organic solvent nanofiltration (OSN) has evolved to an established recycling method for homogeneous catalysts. However, commercial availability has not circumvented the need for classification and the scoping of possible applications for specific solvent mixtures. Therefore, Evonik's DuraMem 300 was assessed for the recycling of magnesium triflate at two transmembrane pressures from a mixture of ethanol, ethyl acetate and water. Catalyst retention up to 98% and permeability of up to 4.44·10∙L∙bar∙m∙h were possible when less than 25% ethyl acetate was in the mixture. The retention of some of the components in the ternary mixture was observed while others were enriched, making the membrane also suitable for fractioning thereof.
有机溶剂纳滤（OSN）已发展成为一种成熟的均相催化剂回收方法。然而，商业可得性并未消除对特定溶剂混合物进行分类和确定其可能应用范围的需求。因此，在两种跨膜压力下，对赢创的DuraMem 300进行了评估，以回收来自乙醇、乙酸乙酯和水混合物中的三氟甲磺酸镁。当混合物中乙酸乙酯含量低于25%时，催化剂保留率可达98%，渗透率可达4.44·10∙L∙bar∙m∙h。观察到三元混合物中的一些组分被保留，而其他组分被富集，这使得该膜也适用于对其进行分馏。
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