Heterogeneous iron containing carbon catalyst (Fe-N/C) for epoxidation with molecular oxygen
Heterogeneous iron containing carbon catalyst (Fe-N/C) for epoxidation with molecular oxygen
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DOI：
10.1016/j.jcat.2019.01.008
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发表时间：
2019-02-01
影响因子：
7.3
通讯作者：
Kucernak, Anthony
中科院分区：
文献类型：
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作者：
Malko, Daniel;Guo, Yanjun;Kucernak, Anthony
热解的过渡金属和含氮碳材料（M-N/C）作为燃料电池阴极中的氧还原反应（ORR）的电催化剂显示出有前途的活性。类似的材料最近作为非均相催化剂获得了兴趣。我们报道了具有有机还原活性的多相M-N/C材料在室温和常压下可以催化烯烃与分子氧和两当量醛的化学环氧化反应。所观察到的产率和选择性高于均相类似物，并且催化剂实现TOF > 2700 h（-1）和TON > 16，000。还证明了催化剂多次循环的能力。(C)2019爱思唯尔公司All rights reserved.
Pyrolized transition metal and nitrogen containing carbon materials (M-N/C) have shown promising activities as electrocatalysts for oxygen reduction reactions (ORR) in fuel cell cathodes. Similar materials have recently gained interest as heterogeneous catalysts. We report that ORR-active heterogeneous M-N/C materials can catalyze the chemical epoxidation of olefins with molecular oxygen and two equivalents of aldehyde at room temperature and ambient pressure. The observed yield and selectivity is higher than that for homogeneous analogues and the catalysts achieve TOF > 2700 h(-1) and TON > 16,000. The ability to recycle the catalyst several times is also demonstrated. (C) 2019 Elsevier Inc. All rights reserved.