Synthesis and catalytic hydrogenation activity of Pd and bimetallic Au–Pd nanoparticles supported on high-porosity carbon materials

Белоусов, О. В.; Tarabanko, Valery E.; Борисов, Р. В.; Simakova, Irina L.; Zhyzhaev, Anatoly M.; Tarabanko, Nikolay; Isakova, V. G.; Пономаренко, И. В.

doi:10.1007/s11144-018-1430-0

Cited by 11 publications

(7 citation statements)

References 54 publications

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“…Note that using such inductors is very common in polymerization studies [31], and nanoparticle formation experiments also often include a reagent whose only role is to help the formation of first nanoparticle nuclei [1][2][3][4][5][6][7][8][9][10][11][12].…”

Section: Resultsmentioning

confidence: 99%

“…44, N is a function of time (or m). In typical experimental works, on the other hand, it is only determined after the completion of the process [1][2][3][4][5][6][7][8][9][10][11][12], so the most relevant property from theoretical studies is its limiting value at infinite time: (38)…”

Section: Resultsmentioning

confidence: 99%

“…self-cleaning mirrors or coatings or small-scale water purification systems [1][2][3]. A high number of nanoparticle synthesis methods have already been developed [1][2][3][4][5][6][7][8][9][10][11][12], and by now it is clear that the size of a nanoparticle fundamentally influences both its catalytic activity and toxicity. Therefore, controlling the size (and to a lesser extent, the shape) of nanoparticles is of primary importance for the potential applications.…”

Section: Introductionmentioning

confidence: 99%

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General nucleation-growth type kinetic models of nanoparticle formation: possibilities of finding analytical solutions

Szabó

Lente

2021

J Math Chem

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In this work, analytical solutions for the time dependences for the concentration of each chemical species are determined in a class of nucleation-growth type kinetic models of nanoparticle formation. These models have an infinitely large number of dependent variables and describe the studied process without approximations. Symbolic solutions are found for the mass kernel (where reactivity is directly proportional to the mass of a nanoparticle) and the diffusion kernel (where reactivity is independent of the size of the nanoparticle). The results show that the average particle size is primarily determined by the type of the kernel function and the ratio of the rate constants of spontaneous nucleation and particle growth. The final distribution of nanoparticle sizes is a continuously decreasing function in each studied case. Furthermore, the time dependences of the concentrations of monomeric units show the induction behavior that has already been observed in many experimental studies.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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General nucleation-growth type kinetic models of nanoparticle formation: possibilities of finding analytical solutions

Szabó

Lente

2021

J Math Chem

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“…However, in many cases, harsh conditions (high temperatures and pressures) are required. An alternative is the use of palladium catalysts, which can be very effective in hydrogenation of both triple and double carbon-carbon bonds [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of polymer protected Pd–Ag/ZnO catalysts for phenylacetylene hydrogenation

et al. 2022

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A simple and environmentally friendly method, based on sequential adsorption of polyacrylamide (PAM) and transition metal ions (Pd 2+ , Ag + ) on zinc oxide precipitated from water solution, was used to synthesize supported mono-and bimetallic catalysts with various Pd:Ag ratios. The catalyst characterization results indicated that PAM and metal ions are completely adsorbed by zinc oxide, forming polymer-stabilized Pd and Ag nanoparticles of 1-3 nm in size, evenly distributed on the support surface. The catalysts were studied in the hydrogenation of phenylacetylene under mild conditions (0.1 MPa, 40°C). Although Ag-free 1%Pd-PAM/ZnO catalyst presents an interesting catalytic performance (in terms of activity and selectivity), the optimal catalyst was 1%Pd-Ag(3:1)-PAM/ZnO, presenting a selectivity to styrene of 88% at 85.4% conversion of phenylacetylene. For comparison, similar Pd-Ag (3:1) bimetallic catalysts modified with polysaccharides such as pectin (Pec), chitosan (Chit) and 2-hydroxyethylcellulose (HEC) were studied in the hydrogenation process. The catalysts demonstrated nearly the same selectivity to styrene. The activity of the catalysts decreases in the following order: 1%Pd-Ag(3:1)-HEC/ZnO > 1%Pd-Ag(3:1)-PAM/ZnO > 1%Pd-Ag(3:1)-Pec/ZnO > 1%Pd-Ag(3:1)-Chit/ZnO.

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“…Например, можно использовать восстановление водных растворов золота (III) цитратом натрия с помощью ультразвука. В работах [8][9][10][11] изложены гидротермальные подходы формирования металлических частиц благородных металлов, которые могут быть использованы в качестве катализаторов, например, гидрирования. С другой стороны, процессы сорбции и восстановления на углеродных материалах применяются для извлечения ионов золота из растворов, например, в процессе цианирования золотосодержащего сырья по технологии «уголь в пульпе» [4,5], доизвлечения ценных компонентов из растворов с крайне низким содержанием благородных металлов.…”

Section: Introductionunclassified

Deposition of Gold (III) from Hydrochloric Acid Solutions on Carbon Nanotubes under Hydrothermal Conditions

Борисов

Белоусов

Жижаев

2019

Journal of Siberian Federal University. Chemistry

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The paper deals with the recovery of gold (III) from hydrochloric acid solutions on carbon based nanotube material at elevated temperatures under autoclave conditions. It is established that the quantitative recovery of gold (III) from hydrochloric acid solution upon its contact with carbon material occurs at a temperature of 170 °C for 240 minutes. The morphological features of metallic gold particles are studies by scanning electron microscopy

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Synthesis and catalytic hydrogenation activity of Pd and bimetallic Au–Pd nanoparticles supported on high-porosity carbon materials

Cited by 11 publications

References 54 publications

General nucleation-growth type kinetic models of nanoparticle formation: possibilities of finding analytical solutions

General nucleation-growth type kinetic models of nanoparticle formation: possibilities of finding analytical solutions

Synthesis of polymer protected Pd–Ag/ZnO catalysts for phenylacetylene hydrogenation

Deposition of Gold (III) from Hydrochloric Acid Solutions on Carbon Nanotubes under Hydrothermal Conditions

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