Tuning the catalytic performance of a Cu supported silica modified γ-Al2O3 nanocatalyst via cobalt-doping for A3-coupling

Paul, Satya; Choudhary, Anu; Kaur, Manpreet; Sharma, Shally

doi:10.1039/d3re00131h

Cited by 3 publications

(2 citation statements)

References 73 publications

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“…Another two intense shake‐up satellite peaks at 784.2 eV and 800.8 eV were detected. Compared to the results reported in the literature, the binding energy values for Co in this work are lower about 1.5 eV than the desirable binding energy for Co (II) (Co 2p 3/2 of 780.6 eV) [11] . However, the interval of binding energy between the Co 2p 3/2 and Co 2p 1/2 peaks was observed to be about 16.0 eV, and thus it can be speculated that the chemical state of Co is positive bivalent.…”

Section: Resultscontrasting

confidence: 85%

“…Compared to the results reported in the literature, the binding energy values for Co in this work are lower about 1.5 eV than the desirable binding energy for Co (II) (Co 2p 3/2 of 780.6 eV). [11] However, the interval of binding energy between the Co 2p 3/2 and Co 2p 1/2 peaks was observed to be about 16.0 eV, and thus it can be speculated that the chemical state of Co is positive bivalent. Notably, the binding energy of the strong satellite was about 5.1 eV higher than that of Co 2p 3/2 , indicating that the presence of Co (II) species over the catalyst surface.…”

Section: The Chemical States Of Pd Nanocatalystsmentioning

confidence: 97%

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Efficient CO Oxidative Coupling to Dimethyl Oxalate over the Pd/Al₂O₃ Nanocatalyst with the Assistance of Co Doping

Li,

Zhu,

Huang

et al. 2024

ChemistrySelect

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CO oxidative coupling to dimethyl oxalate (DMO) is an important approach for the product of ethylene glycol and CO elimination. In this work, the Co doped Pd/Al2O3 nanocatalyst was highly effective for CO oxidative coupling and enhanced remarkably CO conversion and the formation of DMO. The maximum DMO STY reached 1082 g L−1 h−1 over the Pd/Al2O3@1/20Co catalyst at 130 °C for 2 h under the space velocity of 3000 h−1, which is two times higher than that over the Pd/Al2O3 catalyst. The Co modification and its influence on the structure of the Pd/Al2O3 catalyst were also studied systematically by XRD, TEM, CO‐TPD, N2 physical adsorption and XPS techniques. An appropriate Co doing was confirmed to promote distinctly the generation of smaller Pd particles and the adjustment of the adsorption or activation of CO over the catalyst. A positive interaction between Pd nanoparticles and the modulated support with Co doping was demonstrated and favored the enhanced activity of the catalyst for the reaction.

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Section: Resultscontrasting

confidence: 85%

Section: The Chemical States Of Pd Nanocatalystsmentioning

confidence: 97%

Efficient CO Oxidative Coupling to Dimethyl Oxalate over the Pd/Al₂O₃ Nanocatalyst with the Assistance of Co Doping

Li,

Zhu,

Huang

et al. 2024

ChemistrySelect

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Green Chemical Synthesis of Cube‐Shaped CuFe₂O₄ Nanoparticles for Use as Magnetically Retrievable Catalysts in A³ Coupling Reactions

Kalita,

Iraqui,

Sarmah

et al. 2024

Applied Organom Chemis

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A3 coupling reaction is a multicomponent reaction (MCR) involving aryl aldehydes, phenyl acetylenes and amines to synthesize a variety of biologically active propargylamine derivatives. Herein, we report the preparation of cube‐shaped CuFe2O4 nanoparticles (NPs) via the hydrothermal method in the presence of Lantana camara flower (LCF) extract to use them as catalysts to synthesize propargylamine derivatives. X‐ray diffraction study confirms the formation of CuFe2O4 NPs with cubic spinel structures. In the presence of LCF extract, cube‐shaped CuFe2O4 NPs are formed predominantly irrespective of the type of alkali used as the hydrolyzing agent. However, a mixture of nearly spherical and cube‐shaped particles has been formed in the absence of additives. The synthesized CuFe2O4 NPs exhibit superparamagnetic behaviour and are magnetically ordered. The synthesized cube‐shaped CuFe2O4 NPs exhibit excellent catalytic activity in the A3 coupling reaction between benzaldehyde, piperidine and phenylacetylene to give propargylamine with a yield of 90% under the optimum conditions. The catalyst is highly stable and magnetically retrievable facilitating reusability for up to five cycles without considerable loss of catalytic activity. The protocol is suitable for the synthesis of a diverse range of propargylamine derivatives with moderate to excellent yield.

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Fe₃O₄/PANI/CuI as a sustainable heterogeneous nanocatalyst for A³ coupling

Nisha,

Kohli,

Singh

et al. 2024

Nanoscale Adv.

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Tuning the catalytic performance of a Cu supported silica modified γ-Al₂O₃ nanocatalyst via cobalt-doping for A³-coupling

Abstract: Tuning the catalytic activity and selectivity of a heterogeneous transition nano-metal catalyst by the controlled incorporation of a foreign entity (dopant) into its structure is of paramount importance although a...

Cited by 3 publications

References 73 publications

Efficient CO Oxidative Coupling to Dimethyl Oxalate over the Pd/Al₂O₃ Nanocatalyst with the Assistance of Co Doping

Efficient CO Oxidative Coupling to Dimethyl Oxalate over the Pd/Al₂O₃ Nanocatalyst with the Assistance of Co Doping

Green Chemical Synthesis of Cube‐Shaped CuFe₂O₄ Nanoparticles for Use as Magnetically Retrievable Catalysts in A³ Coupling Reactions

Fe₃O₄/PANI/CuI as a sustainable heterogeneous nanocatalyst for A³ coupling

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Tuning the catalytic performance of a Cu supported silica modified γ-Al2O3 nanocatalyst via cobalt-doping for A3-coupling

Abstract: Tuning the catalytic activity and selectivity of a heterogeneous transition nano-metal catalyst by the controlled incorporation of a foreign entity (dopant) into its structure is of paramount importance although a...

Cited by 3 publications

References 73 publications

Efficient CO Oxidative Coupling to Dimethyl Oxalate over the Pd/Al2O3 Nanocatalyst with the Assistance of Co Doping

Efficient CO Oxidative Coupling to Dimethyl Oxalate over the Pd/Al2O3 Nanocatalyst with the Assistance of Co Doping

Green Chemical Synthesis of Cube‐Shaped CuFe2O4 Nanoparticles for Use as Magnetically Retrievable Catalysts in A3 Coupling Reactions

Fe3O4/PANI/CuI as a sustainable heterogeneous nanocatalyst for A3 coupling

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Product

Resources

About

Tuning the catalytic performance of a Cu supported silica modified γ-Al₂O₃ nanocatalyst via cobalt-doping for A³-coupling

Efficient CO Oxidative Coupling to Dimethyl Oxalate over the Pd/Al₂O₃ Nanocatalyst with the Assistance of Co Doping

Efficient CO Oxidative Coupling to Dimethyl Oxalate over the Pd/Al₂O₃ Nanocatalyst with the Assistance of Co Doping

Green Chemical Synthesis of Cube‐Shaped CuFe₂O₄ Nanoparticles for Use as Magnetically Retrievable Catalysts in A³ Coupling Reactions

Fe₃O₄/PANI/CuI as a sustainable heterogeneous nanocatalyst for A³ coupling