A Metallosalen‐based Porous Organic Polymer for Olefin Epoxidation. Issue 15 (2nd July 2015)

• Record Type: Journal Article
• Authors: Liu, Tao‐Tao; Lin, Zu‐Jin; Shi, Peng‐Chao; Ma, Tao; Huang, Yuan‐Biao; Cao, Rong
• Is Part Of: ChemCatChem. Volume 7:Issue 15(2015:Aug.)
• Page Start: 2340
• Page End: 2345
• Publication Date: 2015-07-02
• Subjects: Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.201500374
• Languages: English
• ISSNs: 1867-3880

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Porous organic polymers (POPs) are newly developed porous materials, which show a great promise in gas adsorption and separation, heterogeneous catalysis etc. This work reports a new salen‐(Mn)‐based porous organic polymer (Mn‐POP) serving as a solid catalyst for heterogeneous catalytic olefin epoxidation. Mn‐POP was synthesized by Sonogashira–Hagihara reaction when 1, 3, 5‐triethynylbenzene and the privileged salen‐(Mn) as monomers. The effective coupling of these two monomers was confirmed by UV/Vis and infrared spectroscopy. Gas adsorption studies revealed that Mn‐POP has a BET surface area of 836 m² g⁻¹, and mesoporosity (up to 3.4 nm). Scanning electron microscopy (SEM) showed that the material has uniformly spherical shapes. Further olefin epoxidation experiments proved that Mn‐POP is a good solid catalyst for olefin epoxidation with high activity (up to 99 % conversion) and excellent selectivity (up to 96 %) when O₂ acts as oxidizer. Moreover, Mn‐POP catalyst is easily recoverable and can be reused for at least five times without loss of activity and selectivity.</p> </abstract>