Highly Stable Single‐Atom Catalyst with Ionic Pd Active Sites Supported on N‐Doped Carbon Nanotubes for Formic Acid Decomposition. Issue 21 (12th September 2018)

• Record Type: Journal Article
• Authors: Podyacheva, Olga Y.; Bulushev, Dmitri A.; Suboch, Arina N.; Svintsitskiy, Dmitry A.; Lisitsyn, Alexander S.; Modin, Evgeny; Chuvilin, Andrey; Gerasimov, Evgeny Y.; Sobolev, Vladimir I.; Parmon, Valentin N.
• Is Part Of: ChemSusChem. Volume 11:Issue 21(2018)
• Page Start: 3724
• Page End: 3727
• Publication Date: 2018-09-12
• Subjects: carbon nanotubes -- doping -- formic acid -- palladium -- single-atom catalyst; Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201801679
• Languages: English
• ISSNs: 1864-5631

Abstract

Abstract: 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. Abstract : Better off alone : A highly stable single‐atom Pd catalyst was synthesized by using N‐doped carbon nanotubes (N‐CNTs) as a support. The N‐CNTs stabilize Pd as isolated ions and the resultant catalyst shows high activity in the formic acid decomposition reaction.