Abstract The paper presents the results on rapid production of H 2 from CH 4 by its direct decomposition in a plasma-catalytic mode stimulated microwave irradiation (MWI) at 600°C. Methane was passed through bed iron-containing carbon adsorbent obtained gas coal characterized large dielectric loss tangent. Under MWI, intense breakdown effects with plasma generation appear surface iron–carbon sy...

• Pd-Sn and Pd-In catalysts have emerged as competitive alternative to Pd-Cu pair. An excess of promoter or noble metal provoke adverse effects on catalytic denitrification. Fouling leaching are considered the main causes catalyst deactivation. Regeneration processes been developed provide new life deactivated catalysts. Nitrate (NO 3 – ) pollution water bodies is a serious environmental proble...

Particulate mass concentration is a crucial parameter for characterising air quality. The diesel particulate filter (DPF) the primary technology used to limit vehicle particle emissions, but it needs periodic cleaning, process called regeneration. This study aims assess impact of active DPF regeneration on performance and emissions Euro 5 6 vehicles. examined both carbon dioxide (CO2) pollutant...

For the purpose of designing a reasonable control strategy for DOC-assisted DPF regeneration, mathematical model that describes thermal phenomenon both in diesel oxidation catalyst (DOC) and particulate filter (DPF) during regeneration is developed. All boundary conditions this are obtained by experiments. The effects main exhaust parameters such as mass flow rate, temperature, oxygen concentra...

This paper studies key issues for the design of industrial ethanol to 1,3-butadiene two-step processes, focusing on second catalytic reaction step, which a Ta-SBA-15 catalyst was chosen as representative new generation catalysts. The important practical aspects studied were: i) effect operating conditions and presence impurities (water) in feedstock performance catalyst, ii) stability regenerat...

Palladium-based catalyst can be employed for natural gas exhaust clean up due to its high activity for light hydrocarbon oxidation. Unfortunately, trace amounts of sulfur in the natural gas feed severely deactivate the catalyst. In this paper, SO2 adsorption over a monolithic Pd/Al2O3 oxidation catalyst is monitored in a time-resolved manner in the presence of 100 ppm SO2 under simulated aging ...

The detailed mechanism of the double hydrophosphination of terminal arylacetylenes catalyzed by an iron complex was studied by density functional theory. The calculated results suggest that the reaction proceeds in three steps: active species generation, single hydrophosphination reaction (Cycle 1), double hydrophosphination reaction, viz., active species regeneration (Cycle 2). The results unc...

A model is developed for the breakdown and regeneration of component gases in an industrialised TEA CO2 laser, both with and without internal catalysts, and is found to be in excellent agreement with experimental data. The laser was found to be stable at 02 levels in excess of 2%, whereas previously reported values suggest stable operation at values of less than 1%. This is thought to be relate...