Catalytic Friedel–Crafts acylation: magnetic nanopowder CuFe2O4 as an efficient and magnetically separable catalyst

Parella, Ramarao; Naveen, _______; Kumar, Amit; Babu, Srinivasarao Arulananda

doi:10.1016/j.tetlet.2013.01.081

Cited by 51 publications

(20 citation statements)

References 30 publications

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“…CoFe 2 O 4 spinel oxide is known as an efficient catalyst for aromatic alkylation/decomposition, the Knoevenagel condensation, biodiesel production through transesterification of vegetable oil, reactions for the decolorization of a variety of dyes, as well as for selective oxidation reactions of cyclohexane, styrene, alcohols, and olefins . Whereas, CuFe 2 O 4 ferrite is a prominent catalyst in the decomposition/abatement of NO x and CO 2 , for Friedel–Crafts acylation, the water–gas shift reaction, and hydrogen production through dimethyl ether steam reforming, etc. Generally, the catalytic effectiveness of these systems is explained by the ability of the metallic ions to migrate between the sub‐lattices without altering the structure, which makes the catalyst efficient for many organic transformation reactions …”

Section: Introductionmentioning

confidence: 99%

Structural Changes of Binary/Ternary Spinel Oxides During Ethanol Anaerobic Decomposition

et al. 2017

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Several M‐modified iron oxides of the spinel family have proven to be effective electron and O2− vectors for the production of hydrogen in the chemical‐loop reforming of bio‐alcohols. The present work is specifically focused on investigation of ethanol anaerobic decomposition over spinel oxides, which results in significant structural changes of the oxygen carrier material itself and corresponds to a first step of the chemical‐loop reforming process. In particular, a series of binary/ternary M‐modified ferrospinels were prepared by a co‐precipitation method and tested in terms of both redox properties and intrinsic catalytic activity in addition to a complex ex situ study that encompasses the solid‐state chemistry investigations of the fresh and reduced oxygen carrier materials. It was found that Co/Cu incorporation facilitates total/partial oxidation of ethanol, giving rise to high yields of H2, COx, and H2O; whereas Mn incorporation predominantly favored dehydrogenation and condensation reactions, leading to the formation of acetaldehyde and acetone. In addition, the incorporation of Mn contributed to significantly reduce the amount of coke formed; however, it caused a lower intrinsic reducibility, which was explained by the formation of a thermodynamically stable and hardly reducible layer of MnxFeyO solid solution.

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Section: Introductionmentioning

confidence: 99%

Structural Changes of Binary/Ternary Spinel Oxides During Ethanol Anaerobic Decomposition

et al. 2017

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“…Li et al [25] explored mesoporous silica KIT-6 supported superparamagnetic CuFe 2 O 4 nanoparticles for catalytic asymmetric hydrosilylation of ketones in air. Parella et al [26] developed the catalytic application of CuFe 2 O 4 nanoparticles for the Friedel-Crafts acylation. Binary spinel ferrites MFe 2 O 4 have also been explored as efficient catalyst for the catalytic reduction of nitroarenes.…”

Section: Introductionmentioning

confidence: 99%

Preparation of magnetically separable Cu6/7Co1/7Fe2O4–graphene catalyst and its application in selective reduction of nitroarenes

Zhang

Zhao

Liu

et al. 2015

Catalysis Communications

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“…Parella et al . explored the catalytic application of CuFe 2 O 4 nanoparticles for the Friedel–Crafts acylation 26 . Feng et al .…”

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confidence: 99%

Greener Route for Synthesis of aryl and alkyl-14H-dibenzo [a.j] xanthenes using Graphene Oxide-Copper Ferrite Nanocomposite as a Recyclable Heterogeneous Catalyst

Kumar

Rout

Achary

et al. 2017

Sci Rep

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A facile, efficient and environmentally-friendly protocol for the synthesis of xanthenes by graphene oxide based nanocomposite (GO-CuFe2O4) has been developed by one-pot condensation route. The nanocomposite was designed by decorating copper ferrite nanoparticles on graphene oxide (GO) surface via a solution combustion route without the use of template. The as-synthesized GO-CuFe2O4 composite was comprehensively characterized by XRD, FTIR, Raman, SEM, EDX, HRTEM with EDS mapping, XPS, N2 adsorption-desorption and ICP-OES techniques. This nanocomposite was then used in an operationally simple, cost effective, efficient and environmentally benign synthesis of 14H-dibenzo xanthene under solvent free condition. The present approach offers several advantages such as short reaction times, high yields, easy purification, a cleaner reaction, ease of recovery and reusability of the catalyst by a magnetic field. Based upon various controlled reaction results, a possible mechanism for xanthene synthesis over GO-CuFe2O4 catalyst was proposed. The superior catalytic activity of the GO-CuFe2O4 nanocomposite can be attributed to the synergistic interaction between GO and CuFe2O4 nanoparticles, high surface area and presence of small sized CuFe2O4 NPs. This versatile GO-CuFe2O4 nanocomposite synthesized via combustion method holds great promise for applications in wide range of industrially important catalytic reactions.

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Catalytic Friedel–Crafts acylation: magnetic nanopowder CuFe2O4 as an efficient and magnetically separable catalyst

Cited by 51 publications

References 30 publications

Structural Changes of Binary/Ternary Spinel Oxides During Ethanol Anaerobic Decomposition

Structural Changes of Binary/Ternary Spinel Oxides During Ethanol Anaerobic Decomposition

Preparation of magnetically separable Cu6/7Co1/7Fe2O4–graphene catalyst and its application in selective reduction of nitroarenes

Greener Route for Synthesis of aryl and alkyl-14H-dibenzo [a.j] xanthenes using Graphene Oxide-Copper Ferrite Nanocomposite as a Recyclable Heterogeneous Catalyst

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