JBCS

Though electrochemists first used ionic liquids, the catalysis area pioneered their applications.

Two competing reactions depending on the concentration of co-catalyst and Ni complex: propylene oligomerization or Friedel-Crafts alkylation with toluene (solvent).

Hydrogen/energy storage in the formic acid/carbon dioxide system.

Nanocomposite production requires the fillers randomly dispersed on polymer matrix. In situ procedure combined with an ideal choice of catalyst/support promote the production of a material with improved properties for many applications.

This review is intended to give a picture of the applications of Pd-catalyzed C-C cross-coupling reactions for the synthesis of drug components or drug candidates, regardless of the scale, from 2011 through to the end of July, 2014.

The need for a better carbon management is pushing away from the linear-carbon economy (LCE) towards carbon recycling (CR). This paper discusses the valorization of selected low-value carbon streams such as low-alkanes, CO₂, residual biomass and process glycerol.

In this critical review, it is discussed the development of heterogeneous catalysts for the conversion of ethanol into commodity chemicals

The 2-methyl-8-(benzimidazol)quinolyliron(II) pre-catalyst is investigated by the density functional theory (DFT) calculations to illustrate the mechanism of ethylene polymerization along with understanding the intermediates in the processes of chain propagation and transfer.

A system constituted by a fluorinated ionic liquid plus ZnBr₂ is presented as a new approach to perform effective CO₂ capture and conversion.

Novel synthetic route of isopropylmaltol from furfural in five steps and complexation with TiCl₄ giving a new post-metallocene catalyst. The novel complex was active in homogeneous ethylene polymerization, giving high density polyethylene with high molecular weight.

An unsaturated vegetable oil was used as model substrate for the preparation of biofuels via an olefin metathesis-transesterification-hydrogenation sequence.

Ni/SiO₂ activity and selectivity for the synthesis of n-butylamine from butyronitrile hydrogenation greatly depends on the solvent nature. In non-polar solvents, the solvent-catalyst interaction strength determines the selectivity to n-butylamine: the stronger the solvent-catalyst interaction the higher the n-buylamine yield.

The supramolecular interactions and organizational features of a task-specific ionic liquid derived from the natural kojic acid have been investigated by a set of techniques formed by single-crystal X-ray diffraction, nuclear magnetic resonance (NMR) spectroscopy, UV-Vis spectrophotometry, conductivity measurements, small angle X-ray scattering (SAXS), electrospray (tandem) mass spectrometry (ESI-MS(/MS)), and theoretical calculations.

The complex [Ni(η⁵-C₅H₅)(mesityl-BIAN)]PF₆ catalyses the polymerization of ethylene when activated by methylaluminoxane (MAO).

Magnetic mixed iron/tin oxide nanoparticles were used as catalysts in relevant reactions for biodiesel production technologies.

The dihydride [IrH₂(NCMe)₃(PiPr₃)]BF₄ provides access to potential intermediates in hydrogenations catalyzed by Crabtree-type homogeneous catalysts, thus allowing experimental assessment of likely hydrogenation sequences.

Calculations on the catalytic activity of different R₂Sn(OCH₃)₃ species on the reaction between CO₂ and methanol to afford dimethylcarbonate and water.

This work reports the preparation of the solid catalyst based immobilization of ironporphyrin on macroporous layered double hydroxides (LDHs) prepared by the co-precipitation method, which involved the use of polystyrene as template, oxides reconstruction, and exfoliation. Application of the solid as catalysts in (Z)-cyclooctene and cyclohexane oxidation will help to assess their catalytic activity.

In this paper, carbon nanotubes were produced by methane vapor deposition on Co/γ-Al₂O₃ catalyst. The properties of the catalyst and reaction conditions influenced carbon nanotube selectivity.

DFT calculations coupled with experimental kinetics reveal recycling active dibutyltin(IV) species correlates with the stability of polynuclear species.

Ni/CePr anode exhibited the lowest carbon formation on CO₂ reforming of methane due to its higher oxygen mobility.

The catalysed hydrocracking of soybean, castor and palm tree oils by Rh and Ru nanoparticles leads to hydrocarbons suitable for use as "renewable or green diesel".

A recyclable rhodium catalyst anchored in a commercial anion exchange resin was prepared straightforwardly from readily available precursors. The catalyst was used for the hydroformylation or the tandem sequence hydroformylation/acetalyzation of eugenol and estragole.

Synthesis of HMF from glucose or fructose using ionic liquid.

A novel hydrophobic nucleophile bearing two imidazole groups enhances the cleavage of a model phosphate triester up to 1700-fold, and the reactions are similarly promoted by both cationic and anionic aqueous micelles.

In this work, activated carbon in form of briquettes, produced from wastes of wine industry, were used in the catalytic oxidation of aqueous sulfide contaminant. The preparation and characterization of the catalyst and its efficiency in the oxidation of sulfide are discussed.

Scanning electron microscopy images of NiO prepared by different routes resulting in distinct morphologies: nanoflowers for NiO prepared with ethylene glycol, less compacted nanoflowers for NiO prepared by hydrothermal route, and bidimensional rods for NiO prepared using nickel dimethylglyoxyne as precursor.

Biodiesel production from simultaneous transesterification and esterification reactions of non-refined feedstocks, using SnSO₄ as catalyst.

TiO₂ nanotube arrays impregnated with riboflavin (vitamin B2) and irradiated with only visible light (λ > 400 nm) produce O₂ gas in situ allowing efficient degradation of several dyes.

[RuCl₂(PPh₃)₂(amine)_x]-type complexes, with NH₂Ph (1; x = 2), NH₂Bz (2; x = 2) and NHBuPh (3; x = 1), in the presence of ethyldiazoacetate (EDA), were investigated for ring-opening metathesis polymerization (ROMP) of cyclic olefins. The reactivity of the complexes according to the electronic density and steric hindrance of the amines as ancillary ligands was discussed. In the series, complex 3 is the most active at 25 °C for 5 min, probably because there is more steric hindrance due to the number and the bulkiness of the amine, even with a lower σ-donor character.

Catalytic pyrolysis of oleic acid decreased oxygenated and increased hydrocarbon products formation. NiO/alumina produced more aromatics than NiO/silica.

The crystallinity of the zeolite and the ordering of the mesoporous phase can be adjusted by the time of seed aging.

Catalytic test of 10Ni30LaSi (I-sim): This catalyst showed the best results for glycerol steam reforming under the test conditions, proving stable and active throughout the reaction time.

The chromium(III) complexes bearing imino-furfural ligands were synthesized and tested in ethylene oligomerization reactions producing oligomers in the range C₄-C₁₂₊ with good selectivity for α-olefins.