Fischer M, Hartmann M (2011)
Publication Type: Conference contribution
Publication year: 2011
Pages Range: 269-274
Conference Proceedings Title: DGMK International Conference on Catalysis - Innovative Applications in Petrochemistry and Refining
ISBN: 9783941721173
Metal-organic framework (MOF) materials have been explored for applications in heterogeneous catalysis in recent years. In addition to the use of MOFs as supports for the deposition of highly dispersed metal particles, the incorporation of active centers such as coordinatively unsaturated metal sites and the functionalization of the organic linkers with acidic or basic groups seems to be most promising. In our contribution, three different MOFs carrying amino groups at their organic linkers, namely Fe-MIL-101-NH 2 (S BET = 3438 m 2g -1), Al-MIL-101-NH 2 (S BET = 3099 m 2g -1) and CAU-1 (S BET = 1492 m 2g -1), were synthesized and tested in the Knoevenagel condensation of benzaldehyde with malononitrile and with ethyl cyanoacetate, respectively. It is shown that the expected products benzylidenemalononitrile (BzMN) and ethyl α-cyanocinnamate (EtCC) are formed with selectivities of more than 99 % and yields of 90 to 95 % after 3 h (for BzMN). Due to the very small pore windows of CAU-1 (0.3 to 0.4 nm) the reaction proceeds much slower over this catalyst in comparison to the amino-MIL-101 derivatives, which possess open pore windows of up to 1.6 nm. Finally, leaching tests confirm that the reaction is heterogeneously catalyzed. Moreover, the catalysts are recyclable without significant loss of activity.
APA:
Fischer, M., & Hartmann, M. (2011). Amino-functionalized metal-organic frameworks as tunable heterogeneous basic catalysts. In DGMK International Conference on Catalysis - Innovative Applications in Petrochemistry and Refining (pp. 269-274).
MLA:
Fischer, Marcus, and Martin Hartmann. "Amino-functionalized metal-organic frameworks as tunable heterogeneous basic catalysts." Proceedings of the DGMK International Conference on Catalysis - Innovative Applications in Petrochemistry and Refining 2011. 269-274.
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