Cu nanoparticles-dispersed Mg-Al layered double hydroxides as efficient catalysts for CO2 conversion with propargyl alcohols

Liu, Yankai; Zhou, Ruinian; Qu, Jianyu; Han, Feng; Zhang, Shuai; Xu, Xingliang

doi:10.1016/j.apcata.2021.118444

Cited by 10 publications

(5 citation statements)

References 65 publications

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“…26 Importantly, immobilized FSA was no longer inhibited by propargyl alcohol (see ESI†), due to a barrier effect of the LDH, preventing substrate diffusion and accessibility to the enzymatic active site. 30,31 When achieving the one-pot concurrent process with all the components mixed together (propargyl alcohol, formaldehyde, NHC–Au catalyst and FSA@Zn 2 Cr), the alcohol was completely hydrated as expected, but, within few minutes, LDH dissolved into water at pH 3, resulting in only 12% of monosaccharide formation (estimated by quantitative NMR) (Fig. 1B).…”

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confidence: 66%

Aldolase and N-heterocyclic carbene gold(i) catalysts: compartmentalization and immobilization on anionic clays for concurrent hybrid catalysis at acidic pH

Hélaine

Joly

Gautier

et al. 2023

Catal. Sci. Technol.

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confidence: 66%

Aldolase and N-heterocyclic carbene gold(i) catalysts: compartmentalization and immobilization on anionic clays for concurrent hybrid catalysis at acidic pH

Hélaine

Joly

Gautier

et al. 2023

Catal. Sci. Technol.

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“…The HRTEM study of CuNPs@LDH revealed that Cu nanoparticles are uniformly dispersed over the LDH platelets (Figure c,e) . Furthermore, HRTEM images shown in Figure e revealed an interplanar spacing of 0.25 nm, which is consistent with the interplanar distance of the Cu (111) crystallographic plane, which is consistent with the powder XRD results (Figure b). , Additionally, no diffraction patterns of Cu + species were found, which was consistent with the XRD results. Cu nanoparticles were highly dispersed and tightly anchored on the LDH due to the layered structures in CuNPs@LDH.…”

Section: Resultsmentioning

confidence: 92%

Fabrication and Characterization of Cu Nanoparticles Dispersed on ZnAl-Layered Double Hydroxide Nanocatalysts for the Oxidation of Cyclohexane

Kirar¹,

Gupta²,

Chandra

et al. 2022

ACS Omega

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In the chemical industry, designing high-performance catalysts for the oxidation of cyclohexane into value-added products such as cyclohexanol and cyclohexanone (the combination is known as KA oil) is critical. The catalytic activity of copper nanoparticles supported on layered double hydroxide (LDH) for the liquid phase oxidation of cyclohexane was examined in this study. In this work, we have developed Cu nanoparticles supported on layered double hydroxide nanocatalysts, abbreviated as CuNPs@LDH, by the chemical reduction approach. Various physical methods were used to characterize the resulting material, including ICP-AES, XRD, FTIR, SEM, EDX, HRTEM, and BET surface area. The catalytic activity of copper nanoparticles supported on LDH was examined for the liquid phase oxidation of cyclohexane with tert-butyl hydroperoxide. CuNPs@ LDH nanocatalysts with an excellent 52.3% conversion of cyclohexane with 97.2% selectivity of KA oil was obtained after 6 h at 353 K. The hot filtration test further indicated that CuNPs@LDH was a heterogeneous catalyst that could be recycled at least six times without suffering a substantial reduction in its catalytic activity.

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“…The authors have cited additional references within the Supporting Information. [27][28][29][30][31][32][33][34][35][36][37]…”

Section: Supporting Informationmentioning

confidence: 99%

Construction of Polymers with Highly Dispersed Reactive Phases and Open Pores for Catalyzing the Efficient Synthesis of CO₂ to α‐Methylene Cyclic Carbonates

Guo,

Yang,

Zhang

et al. 2024

Asian J Org Chem

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Selective capture of carbon dioxide as a C1 feedstock for the preparation of high‐value chemicals has been recognised as an important way to mitigate the crisis. In this work, a new heterogeneous catalyst, Cu@CP‐PII, was developed through the rational construction of an open‐pore organic skeleton, which is easy to synthesise and highly efficient. With the synergistic effect between the high CO2 affinity of the porous skeleton and the highly dispersed Cu(I) sites of the activated alkynes, it can be used for the efficient preparation of α‐methylene cyclic carbonates at ambient temperature and pressure. The structure and morphology were exhaustively characterised by Solid State 13C‐NMR, FT‐IR, XPS, TEM and N2 adsorption‐desorption tests, and this catalyst possessed a high surface area of 273.7 m2⸳g‐1 and uniformly dispersion of CuI. To test its catalytic activity, Cu@CP‐PII in an amount of only 0.4 mol% was used as a catalyst for the carboxylative cyclization reaction of propargylic alcohols with CO2, which resulted in substrate conversions up to 100% and yields greater than 99%. In addition, controlled experiments and mechanistic elucidation confirmed that anhydrous and low temperatures are necessary to achieve high selective control of the target product α‐methylene cyclic carbonates.

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Cu nanoparticles-dispersed Mg-Al layered double hydroxides as efficient catalysts for CO2 conversion with propargyl alcohols

Cited by 10 publications

References 65 publications

Aldolase and N-heterocyclic carbene gold(i) catalysts: compartmentalization and immobilization on anionic clays for concurrent hybrid catalysis at acidic pH

Aldolase and N-heterocyclic carbene gold(i) catalysts: compartmentalization and immobilization on anionic clays for concurrent hybrid catalysis at acidic pH

Fabrication and Characterization of Cu Nanoparticles Dispersed on ZnAl-Layered Double Hydroxide Nanocatalysts for the Oxidation of Cyclohexane

Construction of Polymers with Highly Dispersed Reactive Phases and Open Pores for Catalyzing the Efficient Synthesis of CO₂ to α‐Methylene Cyclic Carbonates

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Cu nanoparticles-dispersed Mg-Al layered double hydroxides as efficient catalysts for CO2 conversion with propargyl alcohols

Cited by 10 publications

References 65 publications

Aldolase and N-heterocyclic carbene gold(i) catalysts: compartmentalization and immobilization on anionic clays for concurrent hybrid catalysis at acidic pH

Aldolase and N-heterocyclic carbene gold(i) catalysts: compartmentalization and immobilization on anionic clays for concurrent hybrid catalysis at acidic pH

Fabrication and Characterization of Cu Nanoparticles Dispersed on ZnAl-Layered Double Hydroxide Nanocatalysts for the Oxidation of Cyclohexane

Construction of Polymers with Highly Dispersed Reactive Phases and Open Pores for Catalyzing the Efficient Synthesis of CO2 to α‐Methylene Cyclic Carbonates

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Construction of Polymers with Highly Dispersed Reactive Phases and Open Pores for Catalyzing the Efficient Synthesis of CO₂ to α‐Methylene Cyclic Carbonates