The effect of preparation conditions of Pd/C catalyst on its activity and selectivity in the aqueous-phase hydrogenation of 2,4,6-trinitrobenzoic acid

Belskaya, O. B.; Mironenko, Roman M.; Talsi, V. P.; Родионов, В. А.; Gulyaeva, T. I.; Sysolyatin, S. V.; Лихолобов, В. А.

doi:10.1016/j.cattod.2017.02.037

Cited by 27 publications

(8 citation statements)

References 35 publications

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“…31 We note that Pd 0 catalysts from the reduction of Pd II within solid supports usually contain Pd 0 particles in a wide size range. 25,27,29,38,39 A narrow size distribution of Pd 0 particles is primarily achieved via solution-phase synthesis using special chemicals. 31,40 Validation of Catalyst Structure and Performance.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Supported Palladium Catalysts: A Facile Preparation Method and Implications to Reductive Catalysis Technology for Water Treatment

et al. 2020

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Supported palladium (Pd) catalysts have been extensively studied for water purification applications. However, this technology is primarily challenged by the high cost of Pd and the lack of optimization of catalyst formulations. In this report, we demonstrate a convenient approach to prepare and optimize Pd catalysts for the reduction of toxic oxyanions (bromate, chlorate, and perchlorate). Water-dissolved Na2PdCl4 was quickly adsorbed in the suspension of activated carbon within 5 min and reduced into Pd0 nanoparticles in situ within another 5 min under 1 atm H2 at 20 °C. In terms of both material characterizations and reaction kinetics, the Pd catalysts prepared with the new method show no significant difference from those prepared by the conventional method (involving multiple-step high-temperature procedures) and from benchmark commercial Pd catalysts. With the very simple approach to control, evaluate, and optimize Pd content in the catalyst, we elucidate the relationships among the Pd content, Pd0 particle size, and catalytic activity. We further showcase that the precious metals in previously reported Re–Pd/C and Mo–Pd/C catalysts can be saved up to 80% without sacrificing the activity. The new and convenient catalyst preparation method will significantly enhance the cost-effectiveness of reductive catalysis technologies for water purification.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Supported Palladium Catalysts: A Facile Preparation Method and Implications to Reductive Catalysis Technology for Water Treatment

et al. 2020

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“…The crucial hydrogenation reaction has gained increasing interest, because it is widely utilized in span from industrial materials to activated drugs synthesis . In general, there are two strategies for the hydrogenation reaction; one is the direct hydrogenation with hydrogen gas, and the other one is the convenient and powerful transfer hydrogenation, referring to the addition of hydrogen to a molecule from a non‐H 2 hydrogen source.…”

Section: Applications Of Pd/cmentioning

confidence: 99%

Development of the Applications of Palladium on Charcoal in Organic Synthesis

Liu

Astruc

2018

Adv Synth Catal

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Palladium on charcoal( Pd/C)h as lots of salient merits:( i) it is ac heap andc ommercial source of palladium, (ii)i ts hows efficientc atalytic activity even without ligands,( iii)a saheterogeneous catalyst it is easily recycledm any times by simple filtration,a nd (iv) it is applicablet oag reat number of reactions and substrates,a lthough it is eventually less efficient than homogeneous Pd catalysts containing some sophisticated ligands.T hisr eview recalls the main background ands ummarizes the progress made essentially during the last twelve years in Pd/C-catalyzed organic synthesis since the reviews by Felpins group andSekiin2 006.

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“…Catalytic hydrogenation of 1,3,5-trinitrobenzenes is undoubtedly a more environmentally friendly alternative for production of the corresponding triaminobenzenes. 4 The hydrogenation of trinitroaromatic compounds (TNB, TNT, and 2,4,6-trinitrobenzoic acid) has been realized in the presence of noble-metal-based catalysts, such as Pd/C, 4` b c d e , 4k l Pt/С, 4a and Pd/Al 2 O 3 , 4f g or Raney nickel. 4` i j However, the use of Pd and Pt catalysts is undesirable owing to the high price and limited availability of precious metals, 3b and Raney Ni is pyrophoric, which makes the process potentially hazardous, especially when scaled up.…”

Section: Table 1 List Synthesis Conditions and Physico-...mentioning

confidence: 99%

Flow Hydrogenation of 1,3,5-Trinitrobenzenes over Cu-Based Catalysts as an Efficient Approach for the Preparation of Phloroglucinol Derivatives

et al. 2022

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An environmentally friendly and safe synthesis of phloroglucinol and its derivatives through the flow hydrogenation of 1,3,5-trinitrobenzenes on heterogeneous copper catalysts is reported. It was found that hydrogenation of 1,3,5-trinitrobenzene, 2,4,6-trinitrotoluene 2,4,6-trinitroxylene and 2,4,6-trinitromesitylene in methanol over Cu-Al mixed oxides derived from layered double hydroxides provides the selective formation of the corresponding triaminobenzenes, which were isolated from the reaction mixture in the form of double salts with sulfuric acid stable in storage. The subsequent hydrolysis in aqueous solution gives phloroglucinol derivatives in good yields (75–82%).

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The effect of preparation conditions of Pd/C catalyst on its activity and selectivity in the aqueous-phase hydrogenation of 2,4,6-trinitrobenzoic acid

Cited by 27 publications

References 35 publications

Supported Palladium Catalysts: A Facile Preparation Method and Implications to Reductive Catalysis Technology for Water Treatment

Supported Palladium Catalysts: A Facile Preparation Method and Implications to Reductive Catalysis Technology for Water Treatment

Development of the Applications of Palladium on Charcoal in Organic Synthesis

Flow Hydrogenation of 1,3,5-Trinitrobenzenes over Cu-Based Catalysts as an Efficient Approach for the Preparation of Phloroglucinol Derivatives

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