Search results for " Heterogeneous catalysis"

showing 3 items of 23 documents

Exploiting the CNC Side Chain in Heterocyclic Rearrangements: Synthesis of 4(5)-Acylamino-imidazoles

2010

A new variation on the Boulton-Katritzky reaction is reported, namely, involving use of a CNC side chain. A novel Montmorillonite-K10 catalyzed nonreductive transamination of a 3-benzoyl-1,2,4-oxadiazole afforded a 3-(alpha-aminobenzyl)-1,2,4-oxadiazole, which was condensed with benzaldehydes to afford the corresponding imines. In the presence of strong base, these imines underwent Boulton-Katritzky-type rearrangement to afford novel 4(5)-acylaminoimidazoles.

chemistry.chemical_classificationchemistryTransaminationStereochemistryOrganic ChemistrySide chainSettore CHIM/06 - Chimica OrganicaPhysical and Theoretical Chemistryoxadiazole imidazole heterocyclic rearrangement transamination heterogeneous catalysisBiochemistryCatalysisOrganic Letters
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Effective Removal and Mineralization of 8-Hydroxyquinoline-5-sulfonic Acid through a Pressurized Electro-Fenton-like Process with Ni−Cu−Al Layered Do…

2020

Ni−Cu−Al layered double hydroxide (Ni−Cu−Al LDH) was proposed as an electro‐Fenton‐like catalyst for 8‐hydroxyquinoline‐5‐sulfonic acid (8‐HQS) removal in water. The properties of the prepared catalysts were characterized by using X‐ray, SEM and EDAX analyses. The effect of numerous operative parameters on the removal of 8‐HQS and total organic carbon (TOC) was studied. Very high level removal of both 8‐HQS and TOC (87 and 79 %, respectively) were obtained by using a pressurized electro‐Fenton‐like process (PrEFL‐LDH) at P=10 bars, using a Ti/IrO2‐Ta2O5 anode for 6 h. The process presented good performances in a large range of pH (3–10) and gave better removals of 8‐HQS and TOC with respect…

chemistry.chemical_classificationchemistry.chemical_compoundChemistry8-hydroxyquinoline-5-sulfonic acid heterogeneous catalysis Ni−Cu−Al layered double hydroxide nitrogen heterocycles pressurized-electro-FentonElectrochemistryHydroxide8-HydroxyquinolineMineralization (soil science)Sulfonic acidSettore ING-IND/27 - Chimica Industriale E TecnologicaHeterogeneous catalysisCatalysisNuclear chemistry
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Highly Active Co3O4-Based Catalysts for Total Oxidation of Light C1–C3 Alkanes Prepared by a Simple Soft Chemistry Method: Effect of the Heat-T…

2021

9 figures, 2 tables.

inorganic chemicalsTechnologyInorganic chemistryTotal oxidationcobalt oxidechemistry.chemical_elementalkane oxidationpropaneHeterogeneous catalysissurface oxygen vacanciesMethaneArticleCatalysischemistry.chemical_compoundPropaneAlkane oxidationSurface oxygen vacanciesPropanetotal oxidationvolatile organic compoundsGeneral Materials ScienceReactivity (chemistry)Volatile organic compoundsCobalt oxideAlkanechemistry.chemical_classificationHeterogeneous catalysisEthaneMicroscopyQC120-168.85methaneTQH201-278.5ethaneEngineering (General). Civil engineering (General)TK1-9971heterogeneous catalysischemistryDescriptive and experimental mechanicsMixed oxideElectrical engineering. Electronics. Nuclear engineeringTA1-2040cobalt oxide; total oxidation; alkane oxidation; heterogeneous catalysis; volatile organic compounds; propane; ethane; methane; surface oxygen vacanciesCobaltMethaneMaterials; Volume 14; Issue 23; Pages: 7120
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