An Elastic Monolithic Catalyst: A Microporous Metalloporphyrin‐Containing Framework‐Wrapped Melamine Foam for Process‐Intensified Acyl Transfer. (8th April 2016)

• Record Type: Journal Article
• Authors: Wu, Keyi; Guo, Jia; Wang, Changchun
• Is Part Of: Angewandte Chemie. Volume 128:Number 20(2016)
• Page Start: 6117
• Page End: 6121
• Publication Date: 2016-04-08
• Subjects: Gele -- Konjugierte Polymere -- Porosität -- Schaumstoffkomposite -- Trägerfixierte Katalysatoren; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201600891
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: The advent of conjugated microporous polymers (CMPs) has had significant impact in catalysis. However, the presence of only micropores in these polymers often imposes diffusion limitations, which has resulted in the low utilization of CMPs in catalytic reactions. Herein, the preparation of a foam‐supporting CMP composite with interconnective micropores and macropores and elastic properties is reported. Metalloporphyrin‐based CMP organogels are synthesized within the melamine foam by a room‐temperature oxidative homocoupling reaction of terminal alkynes. Upon drying, the CMP‐based xerogels tightly wrap the framework skeletons of the foam, while the foam cells are still open to allow for the preservation of elasticity and macroporosity. Such a hierarchical structure is efficient for acyl transfer, facilitates substrate diffusion within interpenetrative macropores and micropores, and could be used to intensify catalytic processes. Abstract : Elastisch und katalytisch : Mit einer Gel‐vermittelten Strategie wurde ein CMP‐beschichtetes Melamin‐Schaumstoffkompositmaterial synthetisiert (CMP=konjugiertes mikroporöses Polymer). Dieses bewahrt seine Elastizität und hat miteinander verbundene Mikroporen und Makroporen als Resultat der Beschichtung der Melamin‐Schaumstoffarchitektur mit ZnTEPP‐Metalloporphyrin‐Gerüsten. ZnTEPP=Zn II ‐5, 10, 15, 20‐Tetra(4‐ethinylphenyl)porphyrin.