Tandem Nitrogen Functionalization of Porous Carbon: Toward Immobilizing Highly Active Palladium Nanoclusters for Dehydrogenation of Formic Acid
Tandem Nitrogen Functionalization of Porous Carbon: Toward Immobilizing Highly Active Palladium Nanoclusters for Dehydrogenation of Formic Acid
复制标题
DOI：
10.1021/acscatal.7b00053
复制
发表时间：
2017-04-01
期刊：
影响因子：
12.9
通讯作者：
Xu, Qiang
中科院分区：
文献类型：
--
作者：
Li, Zhangpeng;Yang, Xinchun;Xu, Qiang
通过湿化学还原法合成了氮（N）功能化多孔碳载体（N-MSC-30）固定的高度分散的钯纳米团簇（Pd NC），其中通过串联低温热处理方法制备的N-MSC-30被证明是稳定Pd NC的独特载体。所制备的Pd/N-MSC-30对甲酸（FA）脱氢表现出极高的催化活性和可回收性，在333 K下具有最高的周转频率（TOF = 8414 h(-1)），远高于一步法制备的N-MSC-30负载的Pd催化剂。这种串联热处理策略为将超细金属纳米颗粒固定在N功能化碳材料上提供了一种简便有效的合成方法，在各种催化领域具有巨大的应用前景。
Highly dispersed palladium nanoclusters (Pd NCs) immobilized by a nitrogen (N)-functionalized porous carbon support (N-MSC-30) are synthesized by a wet chemical reduction method, wherein the N-MSC-30 prepared by a tandem low temperature heat-treatment approach proved to be a distinct support for stabilizing the Pd NCs. The prepared Pd/N-MSC-30 shows extremely high catalytic activity and recyclability for the dehydrogenation of formic acid (FA), affording the highest turnover frequency (TOF = 8414 h(-1)) at 333 K, which is much higher than that of the Pd catalyst supported on the N-MSC-30 prepared via a one-step process. This tandem heat treatment strategy provides a facile and effective synthetic methodology to immobilize ultrafine metal NPs on N-functionalized carbon materials, which have tremendous application prospects in various catalytic fields.