Dynamic Phase Behavior of Surface-Active Fluorinated Ionic Liquid Epoxidation Catalysts

被引：1

作者：

Hegelmann, Markus ^{[1
,2
]}

Zuber, Julian ^{[1
,2
]}

Luibl, Johannes ^{[3
]}

Jandl, Christian ^{[4
]}

Korth, Wolfgang ^{[3
]}

Jess, Andreas ^{[3
]}

Cokoja, Mirza ^{[1
,2
]}

机构：

[1] Tech Univ Munich, Catalysis Res Ctr, Ernst Otto Fischer Str 1, D-85748 Garching, Germany

[2] Sch Nat Sci, Dept Chem, Ernst Otto Fischer Str 1, D-85748 Garching, Germany

[3] Univ Bayreuth, Fac Engn Sci, Chair Chem Engn, Univ Str 30, D-95447 Bayreuth, Germany

[4] ELDICO Sci AG, Switzerland Innovat Pk Basel Area, Hegenheimermattweg 167 A, CH-4123 Allschwil, Switzerland

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2024年 / 30卷 / 69期

关键词：

Ionic liquids; Phase transfer catalysis; Epoxidation; Solubility; Fluorine functionalization; OLEFIN EPOXIDATION; HYDROGEN-PEROXIDE; SALTS; ACTIVATION; OXIDATION; STYRENE; ANION;

D O I：

10.1002/chem.202402985

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report on the synthesis of amphiphobic fluorinated surface-active ionic liquid (FSAIL) epoxidation catalysts, which show reversible temperature-controlled solubility in water. The solubility of FSAILs containing the catalytically active perrhenate- and tungstate anions was studied in both the aqueous and the substrate phase, showing a significant solubility decrease in both media compared to their non-fluorinated congeners. It was shown that both the epoxide product and the catalyst additive phenylphosphonic acid (PPA) are efficient in transferring the FSAIL catalyst into the organic phase, rendering the reaction homogeneous. The FSAILs were used as catalysts for the epoxidation of olefins using aqueous H2O2 as oxidant, showing an exceptionally high catalytic activity at mild conditions. Catalyst recycling was demonstrated over ten consecutive runs by phase separation and subsequent product distillation.

引用

页数：9

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