Preparation of hydrogenation catalysts based on platinum nanoparticles supported on carbon nanomaterials

Kushch, S. D.; Kuyunko, N. S.; Тарасов, Б. П.

doi:10.1134/s0023158409060093

Cited by 13 publications

(5 citation statements)

References 7 publications

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“…The main focus in the development of the materials for hydrogen energy technologies concerns efficient hydrogen storage materials [1,2] and catalysts for the processes involving molecular hydrogen including catalysts of hydrogenation of various compounds and electrochemical oxidation of hydrogen in fuel cells [3,4].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen storage behavior of magnesium catalyzed by nickel-graphene nanocomposites

Тарасов

Арбузов

Mozhzhuhin

et al. 2019

International Journal of Hydrogen Energy

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Section: Introductionmentioning

confidence: 99%

Hydrogen storage behavior of magnesium catalyzed by nickel-graphene nanocomposites

Тарасов

Арбузов

Mozhzhuhin

et al. 2019

International Journal of Hydrogen Energy

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“…The activity of the platinum cat alysts supported on chemically reduced GO that were prepared in our earlier study [8] does not exceed 35 mol Н 2 (mol Pt) -1 min -1 , and the catalysts prepared by the simultaneous reduction of GO and platinum [7] show a lower activity of 10 mol Н 2 (mol Pt) -1 min -1 . Compare these data with the activities of related platinum catalysts: platinum parti cles supported on carbon materials with a graphene structure, namely, carbon nanofibers [25,26] and acti vated carbon ARV 5 (6-8 nm) show activities of 52 and 61.5 mol Н 2 (mol Pt) -1 min -1 , respectively.…”

Section: Resultsmentioning

confidence: 83%

“…As in our earlier studies [25,26], prior to platinum deposition an aqueous suspension of hydrophobic TEGO, TEG 1, or TEG 2 was treated with pyridine. Pyridine, penetrating between graphene like support layers, likely forms π complexes as a result of this "noncovalent" modification and prevents agglomera tion.…”

Section: Resultsmentioning

confidence: 99%

Preparation of platinum-containing hydrogenation catalysts supported on thermally reduced graphite oxide

et al. 2015

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Graphene like materials with an atomic ratio of C/O > 40 have been prepared by calcination of graphite oxide (C/O = 1.46) in an inert atmosphere. Platinum nanoparticles (average size of ~2.0 nm) have been deposited onto the surface of the materials from an aqueous solution of H 2 PtCl 6 · xH 2 O in the presence of pyridine. These particles catalyze the liquid phase hydrogenation of PhNO 2 to PhNH 2 and that of the dou ble bonds in 1 decene and styrene. As a support, the defect containing graphene like material prepared by calcination of graphite oxide at 1000-1050°C for 3 h has certain advantages over graphite oxide reduced by chemical means or by short term heating. This material and catalysts supported on it can be formed as "car bon paper" by vacuum filtration.

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“…Heterogeneous materials comprising Pt NPs on carbon supports have numerous applications including fuel cell electrodes − and catalysts for hydrogenation − and oxidation − reactions. To enable future applications, it will often be critical to maximize the number of active catalytic sites per mass of Pt by minimizing the size of the nanoparticles .…”

Section: Introductionmentioning

confidence: 99%

Stabilization of Ultrasmall Platinum Nanoparticles by Nitrogen-Doped Carbon: Implications for Catalysis and Electrocatalysis

Rahman

Tien

Colón-Mercado

et al. 2022

ACS Appl. Nano Mater.

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Heterogeneous materials comprising platinum nanoparticles on carbon supports have numerous applications including fuel cell electrodes and heterogeneous catalysts. The effective application of these materials for fuel cells and catalysis will be greatly advanced by the ability to control the oxidation and sintering of the nanoparticles by modifications of the carbon support. One attempt of such control has been doping carbon supports with nitrogen. In this work, a cutting-edge, high-sensitivity, in situ XRD instrument, which allows observation of ultrasmall Pt nanoparticles, has been combined with in situ XPS to provide unprecedented clarity in the characterization of supported Pt nanoparticles in oxidizing and high-temperature environments. On a nitrogen-doped carbon support derived from poly-phenylporphyrin, Pt nanoparticles show increased stability to oxidation and thermal sintering. The enhanced Pt–support interaction arising from the N dopant versus the N-free carbon is manifested by (1) decreased initial Pt particle sizes, (2) small particle size at higher surface densities, (3) increased resistance of Pt nanoparticles to oxidation, (4) increased electron binding energy of Pt0, and (5) increased resistance of Pt nanoparticles to sintering. It is expected that the higher stability of Pt on NC will be manifested in higher activity in fuel cells and high-temperature catalytic reactions.

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Preparation of hydrogenation catalysts based on platinum nanoparticles supported on carbon nanomaterials

Cited by 13 publications

References 7 publications

Hydrogen storage behavior of magnesium catalyzed by nickel-graphene nanocomposites

Hydrogen storage behavior of magnesium catalyzed by nickel-graphene nanocomposites

Preparation of platinum-containing hydrogenation catalysts supported on thermally reduced graphite oxide

Stabilization of Ultrasmall Platinum Nanoparticles by Nitrogen-Doped Carbon: Implications for Catalysis and Electrocatalysis

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