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Ultrafine PdAu nanoparticles immobilized on amine functionalized carbon black toward fast dehydrogenation of formic acid at room temperature.

ABSTRACT: Ultrafine and highly dispersed PdAu nanoparticles were immobilized on amine functionalized carbon black (VXC-72-NH₂) for dehydrogenation of formic acid (FA). The introduction of amines is of vital importance for the formation of ultrafine PdAu nanoparticles (∼1.5 nm). Moreover, the presence of the amino groups also increased the electron density of PdAu nanoparticles, and this effect facilitated the formation of metal-formate, which further enhanced the rate of the catalytic dehydrogenation of FA. The as-prepared Pd_0.6Au_0.4/VXC-72-NH₂ exhibited high catalytic activity and 100% H₂ selectivity for dehydrogenation of formic acid without any additive, with turnover frequency (TOF) values of 7385 h^-1 at 298 K and 17 724 h^-1 at 333 K, which are the highest TOF values ever reported among heterogeneous catalysts for FA dehydrogenation.

SUBMITTER: Wu L

PROVIDER: S-EPMC9419730 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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Ultrafine PdAu nanoparticles immobilized on amine functionalized carbon black toward fast dehydrogenation of formic acid at room temperature.

Wu Luming L Ni Baoxia B Chen Rui R Shi Chengxiang C Sun Pingchuan P Chen Tiehong T

Nanoscale advances 20190923 11

Ultrafine and highly dispersed PdAu nanoparticles were immobilized on amine functionalized carbon black (VXC-72-NH<sub>2</sub>) for dehydrogenation of formic acid (FA). The introduction of amines is of vital importance for the formation of ultrafine PdAu nanoparticles (∼1.5 nm). Moreover, the presence of the amino groups also increased the electron density of PdAu nanoparticles, and this effect facilitated the formation of metal-formate, which further enhanced the rate of the catalytic dehydroge ...[more]

PMID: 36134405

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