Platinum group metal (PGM) Catalytic converter Spent catalysts Recovery Pyro/hydrometallurgy Magnetic separation 1. Introduction The platinum group metals (PGMs), which include platinum, palladium, rhodium, ruthenium, osmium, and iridium, have held a long-standing allure and have ascended to eminence ...
This correlation is found to agree with experimental pressure drop data and is introduced as an additional source term into the governing nondimensional momentum equation within the monolith brick. Simulation results show that the level of gas flow maldistribution in the monolith depends on the inlet...
Recently, an engine control system which controls an air-fuel ratio so that a purification power of the converter can be always maintained at a high level has been developed. That is, the O2 storage ability means a power for purifying the exhaust gas by storing excessive oxygen when the exha...
(a) The concentration of purified PDE was calibrated with SDS-PAGE. The relation between relative PDE activity and the concentration of PDE was fitted with equation (s5) to determine KD1 of the PDEγ·PDEcat complex. The best-fitted KD1 in solutions of purified PDE was 10 pM (solid ...
A method of removing hydrogen sulfide from an emissions stream is disclosed, wherein the method includes directing the emissions stream into a hydrogen sulfide converter having a metal oxide catalyst, adsorbing the hydrogen sulfide in the emissions strea
NO2 formed during the reaction was decomposed to NO by the catalytic converter downstream of the microreactor. The concentrations of residual NO and N2O (the by-product of the reaction) in the outlet gas were analyzed continuously by the FT-IR detector (ABB 2000, AO series). In order to ...
systematic review; automotive converters; catalytic converter; emissions reduction; exhaust gas post-treatment; catalyst deactivation; oxygen storage; numerical models1. Introduction Despite the significant efforts currently being made in the development of electric vehicles, most road transport is still ...
A pure transport equation has the form ∂𝑦∂𝑡(𝑡,𝑥)=−𝑣(𝑡)∂𝑦∂𝑥(𝑡,𝑥)∂y∂t(t,x)=−v(t)∂y∂x(t,x) (46) where 𝑦(𝑡,0)y(t,0) is the conditions at the inlet and 𝑦(𝑡,𝐿)y(t,L) is the sought after conditions at...
[13]. Among them, catalytic decomposition has become a promising N2O removal technology due to its many advantages. Its operation cost is very low and the process is simple. Moreover, its decomposition products are clean, with no secondary pollution to the environment and no CO2. Equation (1...
These authors proposed the H2-reduction of the support generating oxygen vacancies Pt-Ov-Ti3+ (Equation (3)) that will further be reoxidised by CO2, resulting in CO formation. Bobadilla et al. [55] proposed, for Au/TiO2 catalysts, a change in the mechanism as a function of the ...