Highly dispersed ruthenium capsulated in UiO-66-NH₂ for hydrogen-borrowing-mediated N-alkylation reactions

Catalysis Science & Technology, Journal Year: 2024, Volume and Issue: 14(7), P. 1958 - 1966

Published: Jan. 1, 2024

Herein, atomically dispersed Ru sites are encapsulated within UiO-66–NH 2 frameworks to serve as a highly active, selective, and stable catalyst for amine synthesis via N -alkylation reactions of o -phenylenediamine with monohydric alcohols.

Language: Английский

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Heterogeneous Mn@CeO₂ Catalyst for α-Alkylation of Ketones with Alcohols via Hydrogen-Borrowing Strategy

ACS Omega, Journal Year: 2025, Volume and Issue: 10(9), P. 9649 - 9660

Published: Feb. 24, 2025

Construction of a C-C bond via alkylation ketones with alcohol as the alkylating source by employing hydrogen-borrowing strategy is attracting significant attention and highly appealing due to its simplicity, cost-effectiveness, environmental benefits, fact that water only byproduct. The development heterogeneous catalysts based on nonprecious base metals progressing rapidly. Our newly disclosed manganese-doped cerium oxide nanocomposite (10 wt % Mn@CeO2) stands out cost-efficient air-stable catalyst, synthesized through straightforward coprecipitation method employed for α-alkylation primary alcohols strategy. X-ray diffraction (XRD) analysis confirms high crystallinity CeO2, while field emission scanning electron microscopy (FE-SEM) high-resolution transmission (HR-TEM) images reveal MnO2 nanoparticles, measuring 19 nm in size, uniformly decorated rod-shaped CeO2 which have size 33 nm. photoelectron spectroscopy (XPS) uncovers presence Mn4+ species embedded nanorods. Electron paramagnetic resonance (EPR) further indicates surface defects contribute impressive catalytic yield, ranges from 70 98% α-alkylated ketones. Thermogravimetric (TGA) demonstrates remarkable thermal stability maintaining up 800 °C. Additionally, inductively coupled plasma mass spectrometry (ICP-MS) no leaching Mn ions, emphasizing heterogeneity catalyst. Remarkably, 10 Mn@CeO2 recycled six cycles loss activity. This study underscores synergistic effect between metal redox pair key exceptional activity reactions, making promising catalyst sustainable efficient formation.

Language: Английский

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Construction of effective and recyclable non-precious metal coordination polymers and their multiple applications in water

Chinese Chemical Letters, Journal Year: 2025, Volume and Issue: unknown, P. 111165 - 111165

Published: April 1, 2025

Language: Английский

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Synthesis, Crystal Structure and Fluorescent Property of a Novel Cd(II) Coordination Polymer based on Nitrogen-Containing Ligands

Journal of Chemical Crystallography, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 6, 2024

Language: Английский

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