Highly Stable Single‐Atom Catalyst with Ionic Pd Active Sites Supported on N‐Doped Carbon Nanotubes for Formic Acid Decomposition,ChemSusChem

当前位置： X-MOL 学术 › ChemSusChem › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Highly Stable Single‐Atom Catalyst with Ionic Pd Active Sites Supported on N‐Doped Carbon Nanotubes for Formic Acid Decomposition
ChemSusChem ( IF 7.5 ) Pub Date : 2018-09-12 , DOI: 10.1002/cssc.201801679
Olga Y. Podyacheva _{1,

2} , Dmitri A. Bulushev _{1,

2} , Arina N. Suboch ₁ , Dmitry A. Svintsitskiy _{1,

2} , Alexander S. Lisitsyn ₁ , Evgeny Modin ₃ , Andrey Chuvilin _{3,

4} , Evgeny Y. Gerasimov _{1,

2} , Vladimir I. Sobolev ₁ , Valentin N. Parmon _{1,

2}

Affiliation

Single‐atom catalysts with ionic Pd active sites supported on nitrogen‐doped carbon nanotubes have been synthesized with a palladium content of 0.2–0.5 wt %. The Pd sites exhibited unexpectedly high stability up to 500 °C in a hydrogen atmosphere which was explained by coordination of the Pd ions by nitrogen‐containing fragments of graphene layers. The active sites showed a high rate of gas‐phase formic acid decomposition yielding hydrogen. An increase in Pd content was accompanied by the formation of metallic nanoparticles with a size of 1.2–1.4 nm and by a decrease in the catalytic activity. The high stability of the single‐atom Pd sites opens possibilities for using such catalysts in high‐temperature reactions.

中文翻译：

N掺杂碳纳米管上支持具有离子Pd活性位的高度稳定的单原子催化剂，用于甲酸分解

已经合成了负载在氮掺杂碳纳米管上的具有离子Pd活性位的单原子催化剂，钯含量为0.2-0.5 wt％。在氢气气氛中，Pd部位在高达500°C的温度下表现出出乎意料的高稳定性，这可以通过石墨烯层的含氮片段与Pd离子的配位来解释。活性位点显示出高速率的气相甲酸分解产生氢气。Pd含量的增加伴随着尺寸为1.2-1.4 nm的金属纳米颗粒的形成以及催化活性的降低。单原子钯位点的高稳定性为在高温反应中使用此类催化剂提供了可能性。

更新日期：2018-09-12

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11