Abstract. Gas-phase oxidation of isoprene by ozone (O3) and the hydroxyl (OH) nitrate (NO3) radicals significantly impacts tropospheric oxidant levels secondary organic aerosol formation. The most comprehensive up-to-date chemical mechanism for consists several hundred species over 800 reactions. Therefore, computational expense including entire in large-scale atmospheric transport models is us...

In the present work, chemical coupling between moist CO oxidation and transformation of gaseous potassium salts (KCl or KOH) in presence absence SO2 was investigated experimentally through kinetic modeling. The experiments were performed a laminar flow quartz reactor at temperatures ranging from 873 to 1473 K. experimental results showed that both KCl KOH inhibited oxidation, but addition reduc...

The aim of this project is to investigate the photocatalytic activity ZnO/TiO2 composite films for gas-phase oxidation ethanol. Pure TiO2, pure ZnO, and their composites were formulated using a sol-gel synthesis method, resulting powders cast dried as thin in flat-plate ultraviolet light-emitting diode (UV LED) reactor. P25 TiO2 commercially available ZnO also used comparison. structural, morph...

The selective partial oxidation of short chain alkanes is a key challenge within catalysis research. Direct ethane oxidation to oxygenates is a difficult aim, but potentially rewarding, and it could lead to a paradigm shift in the supply chain of several bulk chemicals. Unfortunately, low C–H bond reactivity and kinetically labile products are just some reasons affecting the development and com...

Ethanol oxidation rate in high pressure steam at the pressure of 10 MPa in the temperature ranging from 430 to 490 °C was studied with the fuel equivalence ratio of 0.4. On the assumption that the reaction order is first order, the reaction rate parameters obtained in the experiments are 10 ± 0.4 s for the pre-exponential factor and 166.5 ± 6.1 kJ·mol for the activation energy. This ethanol oxi...

magnetite (fe3o4) nanoparticles have been successfully prepared by a novel one-step and surfactant-free approach utilizing ferrous ion, as a single iron source. in this manner, the reaction occurs between two aqueous solutions via the spontaneous transfer of ammonia gas from one to another in room temperature. no ferric source or oxidizing specie, oxidation controlling and capping agents are ne...

Current atmospheric models do not include secondary organic aerosol (SOA) production from gas-phase reactions of polycyclic aromatic hydrocarbons (PAHs). Recent studies have shown that primary emissions undergo oxidation in the gas phase, leading to SOA formation. This opens the possibility that low-volatility gas-phase precursors are a potentially large source of SOA. In this work, SOA formati...