脱氢
催化作用
甲酸
碳纤维
无机化学
热解
活性炭
纳米颗粒
化学
钯
氢
材料科学
化学工程
纳米技术
有机化学
复合材料
吸附
工程类
复合数
作者
Jiachao Duan,Qingyang Li,Yan Fu,Jie Chang
标识
DOI:10.1016/j.ijhydene.2021.09.191
摘要
Fast and high selective dehydrogenation of formic acid (FA) is regarded as one of the most promising pathways to obtain the clean energy carrier: hydrogen. In this work, a nitrogen and Cr2O3 co-doped hierarchical carbon material has been successfully synthesized by in-situ pyrolysis of NH2-MIL-101(Cr) in one step, followed by boiling in hot NaOH solution for surface etching. The activated carbon material is used to anchor the ultrafine Pd nanoparticles (2.18 nm) for formic acid dehydrogenation (FAD). As a result, the 5 wt% [email protected]2O3-NPCB-850 exhibits an excellent catalytic activity towards FAD: the turnover frequency (TOF) value is as high as 11 241 h−1 at 333 K, and the selectivity of H2 is up to 100%. The excellent catalytic performance is mainly attributed to the existence of N species and Cr2O3, which plays an important role of electron transfer and anti-aggregation. Our studies open a new methodology for convenient and fast syntheses of nitrogen and metal oxide co-doped activated carbon material, which also provides potential access for producing more highly effective catalysts for other catalytic reactions.
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