Preparation and functionalization of metal-organic frameworks, MOF-808s, and their application in adsorption

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 524, P. 216325 - 216325

Published: Nov. 15, 2024

Language: Английский

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Catalytic Transfer Hydrogenation and Ethanolysis of Furfural to Ethyl Levulinate Using Sulfonated Hf- or Ni-Catalysts Prepared with Mixed Solvents

ACS Sustainable Chemistry & Engineering, Journal Year: 2022, Volume and Issue: 10(49), P. 16261 - 16270

Published: Nov. 30, 2022

Bifunctional Lewis (L) acid (Ni- or Hf-) site–Brønsted (B) catalysts designed to promote transfer hydrogenation reactions were prepared via hydrothermal and solvothermal methods using safe mixed solvents sustainable precursors. By N,N-dimethylformamide as a basis for the desired basicity, could be identified that allowed with tunable ratios of Brønsted sites (L/B). The as-prepared promoted furfural ethanolysis form ethyl levulinate (EL) ethanol solvent hydrogen donor source. Among catalysts, sulfonated Hf-catalysts cyclopentanone/formic (Hf-CPN/FA) an L/B ratio 6.4 gave 95% conversion 51.9% yield EL, while Hf catalyst cyclopentanone/γ-valerolactone (Hf-CPN/GVL) total site amount 85.1 μmol/g 100% furfuryl alcohol (FAL) 72.5% EL. reversible acetalization into 2-furaldehyde diethyl acetal, FAL EL further γ-valerolactone. developed in this work eliminate dipolar aprotic harsh acids used synthesis allow production from biomass-related chemicals.

Language: Английский

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Multifunctional Catalysis of Nanosheet Defective Molybdenum Sulfide Basal Planes for Tandem Reactions Involving Alcohols and Molecular Hydrogen

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(33), P. 12265 - 12279

Published: Aug. 9, 2023

Establishing tandem catalytic synthetic strategies based on the use of readily available, stable, and renewable feedstocks is great significant for sustainable advancement chemical-related industries. The key to success largely relies applying efficient multifunctional catalysts that allow carrying out one-pot single-step synthesis. In this work, we have demonstrated defect-engineered basal planes a molybdenum sulfide nanomaterial ({Mo3S4}n) offer platform chemical process intensification. By catalyst, besides borrowing hydrogen-type processes, herein exemplified thioetherification alcohols, also disclosed novel rare coupling reactions requiring hydrogen activation alcohol dehydrogenation processes in fashion. More specifically, oxidized nucleophiles, such as o-dinitroarenes dinitrophenyl disulfides, are reacted with alcohols presence H2 yield respectively benzimidazoles benzothiazoles. uncommon reactivity {Mo3S4}n arises from coordinatively unsaturated species, which work Lewis acid basic sites, respectively. As suggested by situ infrared (IR) spectroscopy investigations, involves participation both types active sites while dissociation takes place species.

Language: Английский

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Unraveling the reversible formation of defective Ce3+ sites in the UiO-66(Ce) material: a multi-technique study

Materials Today Chemistry, Journal Year: 2022, Volume and Issue: 27, P. 101337 - 101337

Published: Dec. 26, 2022

Language: Английский

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Light-Switchable N-Alkylation Using Amine-Functionalized MOF

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 350, P. 123924 - 123924

Published: April 24, 2024

Language: Английский

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