By use of operando spectroscopies under cycling reaction conditions, water is shown to hamper the redox dynamics realistic palladium oxide nanoparticles dispersed onto alumina and hydrophobic zeolite supports thereby lowering activity for total oxidation methane. Water adsorption forms hydroxyl ad-species that block methane oxygen dissociation seem prevent lattice take part in oxidation. The ma...

The deactivation of Au/CeO2 catalysts during low-temperature water–gas shift reaction and the underlying physical origin were investigated, comparing the deactivation in different reaction atmospheres and subsequent regeneration of the catalysts by reactive treatment in O2/N2 or H2O/N2 gas mixtures. Based on TEM and XRD measurements, Au and ceria particle sintering (irreversible deactivation) c...

Abstract The feasibility of biphenyl hydrogenation with syngas for hydrogen purification and binding the aim its transportation was demonstrated. Specific features as a promising organic carrier using unsupported Ni–Mo sulfide catalysts were studied. In particular, influence temperature, reaction time, presence water in system, Н 2 /СО gas mixture composition on substrate conversion selectivity...

Reactive separations of CO/CO2 mixtures are a promising pathway to lower the energy requirement CO2 hydrogenation chemicals and fuels, with applications in U.S. Navy’s seawater-to-fuel process. With feedstock, challenge is activating CO produce heavier hydrocarbons while preventing methanation, requiring low-temperature Fischer-Tropsch synthesis (FTS) catalysts. In this work, we demonstrate tha...

Zirconia-supported Pd160 and bulk Pd160 were used as methane combustion catalysts for a reaction mixture containing 1% methane and 4% l8Oz in helium. The methane oxidation reaction was performed in pulsed experiments and the distribution of oxygen isotopes among the reaction products was monitored. The “0 content of the catalyst following labeled reaction mixture pulses was determined by cataly...

The syngas generated during gasification process is used for industrial heat, power generation and chemical feedstock production. Gas composition, H2/CO CO/CO2 ratios are the deciding factors producer gas end-use. In present work, rice husk air simulation carried out by non-stoichiometric equilibrium model using Gibbs free energy minimization FactSage 6.3 software. Influence of reactions effect...

Aqueous phase reforming of glycerol was studied over a series of γ-Al2O3 supported metal nanoparticle catalysts for hydrogen production in a batch reactor. Of the metals studied, Pt/Al2O3 was found to be the most active catalyst under the conditions tested. A further systematic study on the impact of reaction parameters, including stirring speed, pressure, temperature, and substrate/metal molar...