Towards one-pot synthesis of menthols from citral: Modifying Supported Ionic Liquid Catalysts (SILCAs) with Lewis and Brønsted acids

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• 作者：Pasi Virtanen ; Hannu Karhu ; Geza Toth ; Krisztian Kordas ; Jyri-Pekka Mikkola
• 关键词：Catalysis ; Catalyst modification ; Ionic liquids ; Multiphase reactions ; One-pot synthesis ; Supported Ionic Liquid Catalyst (SILCA)
• 刊名：Journal of Catalysis
• 出版年：2009
• 出版时间：25 April 2009
• 年：2009
• 卷：263
• 期：2
• 页码：209-219
• 全文大小：1436 K

文摘

The use of ionic liquids in catalysis is attracting ever more attention in chemical engineering. In line with this research we have studied Supported Ionic Liquid Catalysts (SILCAs) which consist of immobilized catalytic species, e.g. transition metal particles residing in an ionic liquid layer immobilized on a solid support. We found out that dissolution of Lewis or Brønsted acids into the ionic liquid layer of SILCA has major effects to the activity as well as the product distribution of the catalyst in citral transformation reactions. In fact, one-pot synthesis of menthols from citral was accomplished. The effects of different amounts of added Lewis and/or Brønsted acids to SILCA (one of them or both) were studied in this work.