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

被引：107

作者：

Podyacheva, Olga Y. ^{[1
,2
]}

Bulushev, Dmitri A. ^{[1
,2
]}

Suboch, Arina N. ^{[1
]}

Svintsitskiy, Dmitry A. ^{[1
,2
]}

Lisitsyn, Alexander S. ^{[1
]}

Modin, Evgeny ^{[3
]}

Chuvilin, Andrey ^{[3
,4
]}

Gerasimov, Evgeny Y. ^{[1
,2
]}

Sobolev, Vladimir I. ^{[1
]}

Parmon, Valentin N. ^{[1
,2
]}

机构：

[1] RAS, Boreskov Inst Catalysis SB, Pr Lavrentieva 5, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Pirogova 2, Novosibirsk 630090, Russia

[3] CIC NanoGUNE, Donostia San Sebastian 20018, Spain

[4] Ikerbasque, Basque Fdn Sci, Bilbao 48013, Spain

来源：

CHEMSUSCHEM | 2018年 / 11卷 / 21期

基金：

俄罗斯科学基金会;

关键词：

carbon nanotubes; doping; formic acid; palladium; single-atom catalyst; ELECTRICAL-CONDUCTIVITY; HETEROGENEOUS CATALYSIS; HYDROGEN-PRODUCTION; CAPACITY PROPERTIES; NITROGEN; NANOFIBERS; METAL; NANOPARTICLES; DEHYDROGENATION; CONSEQUENCES;

D O I：

10.1002/cssc.201801679

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 degrees 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.

引用

页码：3724 / 3727

页数：4

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