RhNPs supported on<i>N</i>-functionalized mesoporous silica: effect on catalyst stabilization and catalytic activity

Pulido-Díaz, Israel T.; Serrano‐Maldonado, Alejandro; López-Suárez, Carlos César; Méndez-Ocampo, Pedro A.; Portales-Martínez, B.; Gutièrrez-Alejandre, Aı̀da; Salas-Martin, Karla P.; Guerrero‐Ríos, Itzel

doi:10.1039/d0dt04213g

Cited by 4 publications

(1 citation statement)

References 43 publications

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“…[6][7][8][9] In the past few decades, the use of transition-metal nanocatalysts A thermoregulated phase-transfer ruthenium nanocatalyst for the atmospheric hydrogenation of α,β-unsaturated ketones for the selective hydrogenation of α,β-unsaturated ketones has attracted much attention. However, most attempts utilize expensive Rh, [10][11][12][13] Pd, [14][15][16][17] Ir, 18,19 Pt, 20,21 and Pt/Au 22 nanocatalysts along with high hydrogen pressures. Until now, reports on this reaction with cheaper Ru nanocatalysts under atmospheric hydrogen pressure are still limited, and the catalyst itself is difficult to reuse.…”

Section: Introductionmentioning

confidence: 99%

A thermoregulated phase-transfer ruthenium nanocatalyst for the atmospheric hydrogenation of α,β-unsaturated ketones

Gao,

Wang

2023

Journal of Chemical Research

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The selective hydrogenation of chalcone to dihydrochalcone under atmospheric hydrogen pressure is investigated using a thermoregulated phase-transfer ruthenium nanocatalyst, representing the first ruthenium nanocatalyst used for this reaction. Under the optimal conditions, the conversion of chalcone into dihydrochalcone and the selectivity are 98% and >99%, respectively. The ruthenium catalyst can be easily separated from the product and recycled three times without any decrease in the conversion or selectivity. The turnover frequency is higher than that of a reported ruthenium complex catalyst. The thermoregulated phase-transfer ruthenium nanocatalyst is also applied for the atmospheric hydrogenation of other α,β-unsaturated ketones.

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Section: Introductionmentioning

confidence: 99%

A thermoregulated phase-transfer ruthenium nanocatalyst for the atmospheric hydrogenation of α,β-unsaturated ketones

Gao,

Wang

2023

Journal of Chemical Research

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Silica‐Grafted Isonicotinamide to Boost Catalytic Activity of Cobalt Nanoparticles in Hydrogenation and Reductive Amination Reactions

Carmona‐Chávez,

Pulido‐Díaz,

Rodríguez‐Nava Mota

et al. 2024

ChemCatChem

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The functionalization of silica supports with isonicotinamide (NIC) facilitated the stabilization of small (3.5 nm), spherical cobalt nanoparticles (CoNPs) used in catalytic hydrogenation. Various silica matrices, including amorphous, mesoporous, and non‐porous ones, were synthesized and post‐grafted with NIC to serve as ligands for stabilizing CoNPs. Comprehensive characterization techniques were employed to fully analyze the prepared materials, which were then utilized in the catalytic hydrogenation of acetophenone, serving as a benchmark reaction to assess the impact of different silica supports on catalysis. The porosity and surface nature of the silica matrices played crucial roles in anchoring the amide ligand, and the presence of the ligand was essential for stabilizing the nanoparticles. Among the catalysts tested, CoNPs@SBA‐15/NIC exhibited the highest catalytic activity and demonstrated excellent performance in the hydrogenation of alkenes, nitriles, ketones, and quinoline under relatively mild conditions. No significant alteration in catalyst morphology or leaching of metal was observed after the reaction. Notably, this catalytic system achieved turnover numbers comparable to those of homogeneous cobalt catalysts. Additionally, one‐pot tandem reductive amination reactions starting from aldehydes and involving both amines and nitrobenzene yielded secondary and tertiary amines in good yields, highlighting the robustness and versatility of the catalyst.

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Electrodes with excellent capacitance: Influence of micro-mesoporosity in derived bituminous carbon

Márquez-Montesino,

Portales-Martínez,

Martínez-dlCruz

et al. 2023

Journal of Energy Storage

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RhNPs supported onN-functionalized mesoporous silica: effect on catalyst stabilization and catalytic activity

Abstract: Amine and nicotinamide groups grafted on ordered mesoporous silicas (OMS) were investigated as stabilizers for RhNPs used as catalysts in the hydrogenation of several substrates, including carbonyl and aryl groups....

Cited by 4 publications

References 43 publications

A thermoregulated phase-transfer ruthenium nanocatalyst for the atmospheric hydrogenation of α,β-unsaturated ketones

A thermoregulated phase-transfer ruthenium nanocatalyst for the atmospheric hydrogenation of α,β-unsaturated ketones

Silica‐Grafted Isonicotinamide to Boost Catalytic Activity of Cobalt Nanoparticles in Hydrogenation and Reductive Amination Reactions

Electrodes with excellent capacitance: Influence of micro-mesoporosity in derived bituminous carbon

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