Articles with "catalyst synthesis" as a keyword



Copper containing nanosilica thioalated dendritic material: A recyclable catalyst for synthesis of benzimidazoles and benzothiazoles

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Published in 2018 at "Applied Organometallic Chemistry"

DOI: 10.1002/aoc.3937

Abstract: In this paper, the design and characterization of a new heterogeneous catalyst by incorporation of copper ions into the nanosilica modified by thiole–based dendrimer are reported. The prepared catalyst was characterized by FT–IR, TGA, elemental… read more here.

Keywords: catalyst synthesis; copper; synthesis benzimidazoles; material ... See more keywords
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ZnO‐Nanorods as an Efficient Catalyst for the Synthesis of 1,3‐Thiazolidine Derivatives by Aqueous Multicomponent Reactions of Isothiocyanates

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Published in 2017 at "Journal of Heterocyclic Chemistry"

DOI: 10.1002/jhet.2789

Abstract: A simple three-components reaction between alkynes, primary amines, and isothiocyanates in the presence of nanophase ZnO catalysts in aqueous medium at room temperature is reported which produced 1,3-thiazolidine derivatives in good yields. Particularly valuable features… read more here.

Keywords: catalyst synthesis; efficient catalyst; zno nanorods; thiazolidine derivatives ... See more keywords

Silica-coated MgAl2O4 nanoparticles supported phosphotungstic acid as an effective catalyst for synthesis of α-aminophosphonates

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Published in 2019 at "Research on Chemical Intermediates"

DOI: 10.1007/s11164-019-03737-z

Abstract: In this research, a recoverable catalyst (MgAl2O4@SiO2–PTA) was prepared by a simple utilization method. The prepared catalyst was characterized by XRD, FT-IR, SEM, EDX, ICP-AES, and BET techniques. The average crystallite size of MgAl2O4 was… read more here.

Keywords: silica coated; catalyst synthesis; mgal2o4; synthesis aminophosphonates ... See more keywords

Catalytic valorization of biomass derived glycerol under methane: Effect of catalyst synthesis method

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Published in 2018 at "Fuel"

DOI: 10.1016/j.fuel.2017.12.018

Abstract: Abstract The feasibility of upgrading glycerol using Zn, Cu and Ga modified ZSM-5 was investigated. Different catalyst synthesis techniques were compared for their performance on the aromatization of glycerol under a methane environment at 400 °C… read more here.

Keywords: catalyst synthesis; glycerol methane; performance; catalyst ... See more keywords

Decoration of β-CD on Fe3O4@Ag core–shell nanoparticles as a new magnetically recoverable and reusable catalyst for the synthesis of 3,4-dihydropyrimidinones and 2,4-dihydropyrano[2,3-c]pyrazoles in H2O

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Published in 2019 at "Inorganica Chimica Acta"

DOI: 10.1016/j.ica.2018.11.009

Abstract: Abstract This report provides a description of the preparation and characterization of a Fe3O4@Ag-β-CD composite as a new magnetically recoverable catalyst for the synthesis of a number of biologically and pharmaceutically significant organic compounds in… read more here.

Keywords: synthesis; catalyst; catalyst synthesis; fe3o4 ... See more keywords

Perlite impregnated with HPA/α-Fe2O3: Magnetically separable catalyst for the synthesis of 3,3,6,6-tetramethyl-9-substituted-3,4,6,7-tetrahydro-2H-xanthene-1,8-(5H,9H)-diones

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Published in 2021 at "Journal of Physics and Chemistry of Solids"

DOI: 10.1016/j.jpcs.2021.110192

Abstract: Abstract Phosphotungstic acid (HPA)/α-Fe2O3-loaded Perlite has been prepared as a recyclable heterogeneous catalyst for the synthesis of xanthenes. The prepared catalyst has been characterized by Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) analysis, scanning electron… read more here.

Keywords: hpa fe2o3; microscopy; spectroscopy; catalyst synthesis ... See more keywords

Synthesis of Novel Pyrimido[4,5-b] Quinolines Containing Benzyloxy and 1,2,3-Triazole Moieties by DABCO as a Basic Catalyst

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Published in 2022 at "ACS Omega"

DOI: 10.1021/acsomega.2c05896

Abstract: DABCO was used as a basic and inexpensive catalyst for the synthesis of some new benzyloxy pyrimido[4,5-b]quinoline derivatives and 1,2,3- triazole-fused pyrimido[4,5-b]quinolines by the one-pot multi-component reaction of various benzyloxy benzaldehydes or benzylic −1,2,3-triazol-4-yl-methoxy benzaldehydes… read more here.

Keywords: pyrimido quinolines; synthesis novel; catalyst synthesis; pyrimido ... See more keywords

1,3-Bis(carboxymethyl)imidazolium Chloride as a Metal-Free and Recyclable Catalyst for the Synthesis of N-Allylanilines by Allylic Substitution of Alcohols

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Published in 2018 at "ACS Sustainable Chemistry & Engineering"

DOI: 10.1021/acssuschemeng.8b02614

Abstract: The 1,3-bis(carboxymethyl)imidazolium chloride, which is easily and in a straightforward manner prepared readily from starting materials in multigram scale, is employed as catalyst in the synthesis of N-allylanilines by allylic substitution of alcohols with anilines.… read more here.

Keywords: catalyst synthesis; carboxymethyl imidazolium; bis carboxymethyl; substitution ... See more keywords

Molecular Catalyst Synthesis Strategies to Prepare Atomically Dispersed Fe-N-C Heterogeneous Catalysts.

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Published in 2022 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.2c08884

Abstract: We report a strategy to integrate atomically dispersed iron within a heterogeneous nitrogen-doped carbon (N-C) support, inspired by routes for metalation of molecular macrocyclic iron complexes. The N-C support, derived from pyrolysis of a ZIF-8… read more here.

Keywords: molecular catalyst; atomically dispersed; prepare atomically; catalyst synthesis ... See more keywords

Integration of a metal–organic framework with zeolite: a highly sustainable composite catalyst for the synthesis of γ-valerolactone and coumarins

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Published in 2018 at "Sustainable Energy and Fuels"

DOI: 10.1039/c8se00098k

Abstract: In this study, two well-known porous materials, zeolite Beta and a metal–organic framework are entangled to form a highly efficient composite catalyst. The composite catalyst contains the characteristic features of both the porous materials and… read more here.

Keywords: composite catalyst; catalyst synthesis; microscopy; metal organic ... See more keywords

Synthesis and Characterization of Brönsted Acidic Ionic Liquid Based on Ethylamine as an Efficient Catalyst for the Synthesis of Xanthene Derivatives under Solvent-Free Conditions

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Published in 2019 at "Polycyclic Aromatic Compounds"

DOI: 10.1080/10406638.2018.1557709

Abstract: Abstract Ethylammonium N-sulfonic acid chloride, a sulfonic acid functionalized ionic liquid, was prepared, characterized and used as an efficient catalyst for synthesis of various xanthene derivatives by condensation between aldehydes and dimedone or 2-naphthol under… read more here.

Keywords: ionic liquid; catalyst synthesis; efficient catalyst; xanthene derivatives ... See more keywords