Effect of the reduction conditions of the supported palladium precursor on the activity of Pd/C catalysts in hydrogenation of sodium 2,4,6-trinitrobenzoate

Belskaya, O. B.; Mironenko, Roman M.; Gulyaeva, T. I.; Тренихин, М. В.; Лихолобов, В. А.

doi:10.1007/s11172-018-2039-1

Cited by 9 publications

(1 citation statement)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Palladium nanoparticles were synthesized on the supports' surface by hydroxide precipitation due to aqueous alkaline hydrolysis of a hydrochloric solution of palladium chloride [81]. The solution was prepared as follows: 0.7 g of PdCl 2 •2H 2 O was dissolved in 30 mL of 0.5 M HCl by heating to 70 • C. Then, the volume of the solution was brought to 40 mL by adding 10 mL of distilled water.…”

Section: Catalyst Synthesis Methodsmentioning

confidence: 99%

Sol-Gel Synthesis of Organically Modified Silica Particles as Efficient Palladium Catalyst Supports to Perform Hydrogenation Process

et al. 2021

View full text Add to dashboard Cite

Modern approaches to the production of new materials require the improvement of synthesis techniques towards simplifying the processes of their preparation and reducing the number of stages. Thus, in this study, one-stage synthesis of organomodified silica materials is developed using a special surfactant—dodecyldimethylamin N-oxide (DDAO). The peculiarity of this approach is that there is no need for heat treatment of the material, since DDAO is removed by washing in alcohol. Amino-, mercapto-, methyl-, and phenyl-modified silicas were synthesized using this method. The SEM images showed the morphology of all the obtained materials is close, all particles are spherical, and the diameter of individual particles is about 500 nm. Palladium particles were precipitated on these supports, then the experiments were carried out to study the catalytic activity of these materials in a model reaction of nitroaniline reduction. The phenyl modified matrix-based materials showed very low activity. This is due to the fact that the support and the substrate contain aromatic fragments, thus, hydrophobic interactions arise between them, which complicates the diffusion of the products. The leader is a matrix with an amino fragment, which is associated with its electron-donor effect. The XPS method revealed the amount of fixed palladium, as well as the binding energy shifts, which are 0.68 eV for 5% Pd/SiO2–C6H5; 0.56 eV for 5% Pd/SiO2–C3H6–NH2; 0.26 eV for 5% Pd/SiO2–CH3; and 0.13 eV for 5% Pd/SiO2.

show abstract

Section: Catalyst Synthesis Methodsmentioning

confidence: 99%

Sol-Gel Synthesis of Organically Modified Silica Particles as Efficient Palladium Catalyst Supports to Perform Hydrogenation Process

et al. 2021

View full text Add to dashboard Cite

show abstract

The composition of transformation products of 2,4,6‐trinitrobenzoic acid in the aqueous‐phase hydrogenation over Pd/C catalysts

Talsi

Belskaya

Yurpalov

2019

Magnetic Reson in Chemistry

View full text Add to dashboard Cite

Due to a detailed analysis of NMR spectra of the reaction solutions with different composition obtained by the aqueous‐phase catalytic (Pd/C) hydrogenation of 2,4,6‐trinitrobenzoic acid, the intermediate compounds were identified and a more substantiated mechanism was proposed for the formation of the main reaction products—1,3,5‐triaminobenzene and cyclohexane‐1,3,5‐trione trioxime. The condensation of the 1,3,5‐triaminobenzene molecules produced by a complete hydrogenation of 2,4,6‐trinitrobenzoic acid was shown to result in the formation of a paramagnetic heterocyclic compound.

show abstract

Approaches to the synthesis of Pd/C catalysts with controllable activity and selectivity in hydrogenation reactions

2020

View full text Add to dashboard Cite

Effect of the reduction conditions of the supported palladium precursor on the activity of Pd/C catalysts in hydrogenation of sodium 2,4,6-trinitrobenzoate

Cited by 9 publications

References 33 publications

Sol-Gel Synthesis of Organically Modified Silica Particles as Efficient Palladium Catalyst Supports to Perform Hydrogenation Process

Sol-Gel Synthesis of Organically Modified Silica Particles as Efficient Palladium Catalyst Supports to Perform Hydrogenation Process

The composition of transformation products of 2,4,6‐trinitrobenzoic acid in the aqueous‐phase hydrogenation over Pd/C catalysts

Approaches to the synthesis of Pd/C catalysts with controllable activity and selectivity in hydrogenation reactions

Contact Info

Product

Resources

About