Ni nanoparticles on polyaromatic hyperbranched polymer support as a mild, tunable, and sustainable catalyst for catalytic transfer hydrogenation

Basaveni, Surendar; Kuchkina, N. V.; Shifrina, Zinaida B.; Pal, Manojit; Rajadurai, Marina

doi:10.1007/s11051-019-4533-2

Cited by 11 publications

(2 citation statements)

References 45 publications

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“…An open structure of rigid hyperbranched polymers also allows for easy accessibility of catalytic NPs by substrate, leading to the improved catalysts performance [ 38 ]. We have previously demonstrated the efficacy of this approach for syntheses of Pd and Ni-containing PPP based catalysts for different types of organic reactions [ 38 , 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

Ru@hyperbranched Polymer for Hydrogenation of Levulinic Acid to Gamma-Valerolactone: The Role of the Catalyst Support

Сорокина

Михаилов

Kuchkina

et al. 2022

IJMS

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Hydrogenation of levulinic acid (LA) obtained from cellulose biomass is a promising path for production of γ-valerolactone (GVL)—a component of biofuel. In this work, we developed Ru nanoparticle containing nanocomposites based on hyperbranched pyridylphenylene polymer, serving as multiligand and stabilizing matrix. The functionalization of the nanocomposite with sulfuric acid significantly enhances the activity of the catalyst in the selective hydrogenation of LA to GVL and allows the reaction to proceed under mild reaction conditions (100 °C, 2 MPa of H2) in water and low catalyst loading (0.016 mol.%) with a quantitative yield of GVL and selectivity up to 100%. The catalysts were successfully reused four times without a significant loss of activity. A comprehensive physicochemical characterization of the catalysts allowed us to assess structure-property relationships and to uncover an important role of the polymeric support in the efficient GVL synthesis.

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Section: Introductionmentioning

confidence: 99%

Ru@hyperbranched Polymer for Hydrogenation of Levulinic Acid to Gamma-Valerolactone: The Role of the Catalyst Support

Сорокина

Михаилов

Kuchkina

et al. 2022

IJMS

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“…Recently, they synthesized atomically dispersed iron-supported graphitic carbon nitride heterogeneous catalysts in the continuous liquid-phase semihydrogenation of various alkynes, which exhibits higher activity than larger clusters . Moreover, Rajadurai and co-workers presented hyperbranched polyaromatic polymer-stabilized Ni nanoparticles with diameters between 3 and 4.5 nm. The supported Ni catalyst displayed good air stability, high activity, and controlled reactivity in catalytic transfer hydrogenation of nitroarenes and alkenes.…”

Section: Introductionmentioning

confidence: 99%

Non-noble Nickel-Modified Covalent Organic Framework for Partial Hydrogenation of Aromatic Terminal Alkynes

Wang

Liu

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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Developing non-noble metal-based catalysts with excellent performance for selective hydrogenation of alkynes under mild reaction conditions is highly desirable but still faces challenges. Herein, a non-noble nickel-modified covalent organic framework (Ni/COF) had been synthesized through a facile post-modified method and followed by reduction at a different temperature under a H2/Ar atmosphere. The as-prepared catalysts were characterized by X-ray diffraction, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, Brunauer–Emmett–Teller, and Fourier transforms infrared, and the optimal H350–Ni/COF presents excellent catalytic performance in the semihydrogenation of a series of aromatic terminal alkyne substrates, particularly in the partial hydrogenation of phenylacetylene with nearly full conversion and 85% selectivity toward styrene under mild reaction conditions (10 bar of H2, 100 °C, and 1 h). Moreover, such a catalyst also exhibited satisfying stability after three consecutive cycles.

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Biofuel production, hydrogen production and water remediation by photocatalysis, biocatalysis and electrocatalysis

et al. 2023

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The energy crisis and environmental pollution have recently fostered research on efficient methods such as environmental catalysis to produce biofuel and to clean water. Environmental catalysis refers to green catalysts used to breakdown pollutants or produce chemicals without generating undesirable by-products. For example, catalysts derived from waste or inexpensive materials are promising for the circular economy. Here we review environmental photocatalysis, biocatalysis, and electrocatalysis, with focus on catalyst synthesis, structure, and applications. Common catalysts include biomass-derived materials, metal–organic frameworks, non-noble metals nanoparticles, nanocomposites and enzymes. Structure characterization is done by Brunauer–Emmett–Teller isotherm, thermogravimetry, X-ray diffraction and photoelectron spectroscopy. We found that water pollutants can be degraded with an efficiency ranging from 71.7 to 100%, notably by heterogeneous Fenton catalysis. Photocatalysis produced dihydrogen (H2) with generation rate higher than 100 μmol h−1. Dihydrogen yields ranged from 27 to 88% by methane cracking. Biodiesel production reached 48.6 to 99%.

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Ni nanoparticles on polyaromatic hyperbranched polymer support as a mild, tunable, and sustainable catalyst for catalytic transfer hydrogenation

Cited by 11 publications

References 45 publications

Ru@hyperbranched Polymer for Hydrogenation of Levulinic Acid to Gamma-Valerolactone: The Role of the Catalyst Support

Ru@hyperbranched Polymer for Hydrogenation of Levulinic Acid to Gamma-Valerolactone: The Role of the Catalyst Support

Non-noble Nickel-Modified Covalent Organic Framework for Partial Hydrogenation of Aromatic Terminal Alkynes

Biofuel production, hydrogen production and water remediation by photocatalysis, biocatalysis and electrocatalysis

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