Alkali metal K- and/or Na-promoted FeCoCuAl catalysts were synthesized by precipitation and impregnation, their physicochemical catalytic performance for CO2 hydrogenation to light hydrocarbons was also investigated in the present work. The results indicate that Na K introduction leads formation of active phase metallic Fe Fe-Co crystals order < K-Na. simultaneous causes a synergistic effect...

Selective reactions that combine H2, CO and organic electrophiles (aldehyde, ketones, isocyanide) to form hydrogenated C3 C4 carbon chains are reported. These proceed by homologation mediated [W(CO)6] an aluminum(I) reductant, followed functionalization hydrogenation of the chain ends. A combination kinetics (rates, KIEs) DFT calculations has been used gain insight into a key step which involve...

A model is developed based on a two-stage hydrogenation of pyrolysis gasoline to obtain a C6-C8 cut suitable for extraction of aromatics. The first stage hydrogenation takes place in a trickle bed reactor while the second stage hydrogenation is carried out in a two compartment fixed bed reactor in which hydrogenation of olefins takes place in the first compartment while the sulphur is eliminate...

Mixed Ni-Al oxide catalytic precursors with different elemental ratios (20, 50, and 80 wt.% Ni0) were synthesized using green supercritical antisolvent co-precipitation (SAS). The obtained metal catalysts characterized in detail by X-ray diffraction (XRD) analysis, atomic pair distribution function (PDF) CO adsorption, high-resolution transmission electron microscopy (HRTEM). It was found that ...

Novel Ru(II) complex-based hybrid inorganic-organic materials immobilized via a diamine co-ligand site instead of the conventional diphosphine ligand have been prepared. The complexes were prepared by two different methods: sol-gel and surface modification techniques. The structures of the desired materials were deduced by several available physical measurements like elemental analyses, infrare...

The tandem process of carbon dioxide hydrogenation to methanol and its conversion hydrocarbons over mixed metal/metal oxide-zeotype catalysts is a promising path CO2 valorization.

Complexes [Rh(cod)(degusR)]ClO4, where cod is 1,5-cyclooctadiene and degusR represents the homochiral dithioethers (R,R)-1-benzyl-3,4-bis(methylsulfanyl)pyrrolidine, (R,R)-1-benzyl-3,4-bis(isopropylsulfanyl)pyrrolidine and (R,R)-1-benzyl-3,4bis(phenylsulfanyl)pyrrolidine were prepared and characterized. Their reactivity with CO and PPh3 was investigated. The complexes were assayed as catalysts ...

The adequate configuration and the effect of reduction was studied for In2O3-ZrO2/SAPO-34 catalyst with aim improving its performance (activity selectivity in pseudo-steady state) hydrogenation CO, CO2 CO2/CO (COx) mixtures into olefins. experiments were carried out a packed bed reactor at 400 °C; 30 bar; H2/COx ratio 3; CO2/COx ratios 0, 0.5 1; space time (referred to as In2O3-ZrO2 mass) 3.35 ...

The selective hydrogenation of fluorinated arenes with polar functionalities to valuable cyclohexanes is achieved using supercritical CO 2 as solvent in combination Rh NPs immobilized on molecularly modified silica catalysts.