The Ni-containing catalysts based on ceria–zirconia doped with Ti and Ti+Nb were prepared by the solvothermal method in supercritical fluids. Ni deposition was carried out incipient wetness impregnation one-pot technique. All materials investigated a complex of physicochemical methods (XRD, BET, TEM, H2-TPR). Samples catalytic properties studied methane dry reforming plug-flow reactor. Conversi...

hydrogen can be produced for fuel cell applications by using methanol steam reforming reaction. in this article, a method was developed for regeneration of accelerated deactivated methanol-steam-reforming catalyst. successive deactivation–regeneration cycles were studied in a 250 hours test for the first time including 6 regeneration cycles. it is shown that regeneration of the catalyst in dilu...

Our goal in this paper is the description and analysis of new findings and results on membrane reactors and catalytic reactors/heterogeneous processors for the steam reforming reactions of methane, natural gas, and methanol for use in power generation systems and fuel cells. The current communication continues this research by giving emphasis in the so-called “Improved Reaction” and “ReformingF...

This paper presents a numerical and experimental study on the performance of a methanol steam reformer integrated with a hydrogen/air combustion reactor for hydrogen production. A CFD-based 3D model with mass and momentum transport and temperature characteristics is established. The simulation results show that better performance is achieved in the cross-U type reactor compared to either a tubu...

In situ X-ray photoelectron spectroscopy and low-energy ion scattering were used to study the preparation, (thermo)chemical and catalytic properties of 1:1 PdGa intermetallic near-surface phases. Deposition of several multilayers of Ga metal and subsequent annealing to 503-523 K led to the formation of a multi-layered 1:1 PdGa near-surface state without desorption of excess Ga to the gas phase....

In order to examine whether catalyst granular size was a factor for tar removal and syngas composition enhancement, three Ni/char catalysts with 90-100 mesh (Ni/SC), 50-60 mesh (Ni/MC), and 20-30 mesh (Ni/LC) size were prepared with a mechanical mixing method and tested in an updraft gasifier. Reforming parameters investigated were the reaction temperature (650-850C), the Ni loading (5-20% of ...

The present study is dedicated to the coupled CFD-kinetics 2D axisymmetric modeling of plasma-assisted diesel fuel reformer developed for two different applications: (i) onboard H2 production for fuel cell feeding and (ii) NOx trap regeneration. These cases correspond to very different reacting conditions. In the first case, diesel fuel reacts with air while in the second case it reacts with di...

A long term pilot scale experiment with steam reforming treatment technology was conducted for volume and weight reduction of uranium contaminated waste tri-n-butyl phosphate/n-dodecane solvent (TBP/dodecane) which was difficult to incinerate. The technology consists of a steam reforming process and a submerged combustion process. In the first process, TBP/dodecane is vaporized and pyrolyzed wi...

We demonstrated how the special synergy between a noble metal single site and neighboring oxygen vacancies provides an “ensemble reaction pool” for high hydrogen generation efficiency carbon dioxide (CO2) selectivity of tandem reaction: methanol steam reforming. Specifically, rate over Ru1/CeO2 catalyst is up to 9360 mol H2 per Ru hour (579 mLH2 gRu–1 s–1) with 99.5% CO2 selectivity. Reaction m...