Oxidation of sulfur dioxide by oxygen and ozone in aqueous solutionTimothy V. LarsonNeil R. HorikeHalstead Harrison
Ozone is formed by photolysis of oxygen in the stratosphere and diffuses down through the troposphere to be destroyed at the Earth's surface. Its concentration at cloud-forming levels is several times greater than pollutant gases such as SOand NO. It is known that ozone reacts rapidly with ...
Ozone is a bluish gas with a pungent smell and is an extremely reactive and unstable allotrope of oxygen (O2). The physical properties of ozone are listed in Table 2 (compiled from [2]). Table 1. Typical Advanced Oxidation Processes (AOP). H2O2/UVFe2+/H2O2(Fenton System)O3/H2O2 O3/...
The gas-phase oxidants mainly include ozone, oxygen, air, water vapor, carbon dioxide, etc. Due to differences in the thermal stability of oxygen-containing functional groups, the type and content of oxygen-containing functional groups produced by gas-phase oxidation strongly depend on the oxidation...
Nitrogen oxides (NOx = NO + NO2) emitted from combustion and natural sources are reactive gases that regulate the composition of Earth’s atmosphere. Nocturnal oxidation driven by nitrate radicals is an important but poorly understood process
Thermodynamics of oxidation of crystalline silicon carbide (cubic form) by atomic oxygen (O) and ozone (O3) was derived to understand the thermodynamic stability of SiC in the upper atmosphere. Equilibrium constants and equilibrium partial pressures were computed for each of eight possible reactions ...
As the bubble diameter reaches micrometers or even nanometers, the surface tension of the gas–liquid interface compresses the bubbles, thus increasing the specific surface area of bubbles and the oxygen transfer efficiency between gas and liquid [8]. The diameter of MBs is small and the ...
2, the hydrogen atom of MSIA-I interacts with the two oxygen atoms of ozone to form the two hydrogen bonds, whereas sulfur atom is involved in the formation of van der Waals interaction with an oxygen atom of ozone. After the formation of the complex C1-1, the reaction proceeds via a ...
In addition, since ozone produces only oxygen by decomposition thereof, and therefore ozone is environmentally friendly, use of ozone has tended to increase in recent years. A method for improving effects of such an ozone treatment usually involves increasing the amount of ozone used. However, an...
Kinetic experiments were carried out in a gradientless reactor. Ozone decomposition and CO oxidation were found to proceed in the temperature range 10–70°C. Using EPR, TPD and XPS spectroscopy, two different kinds of oxygen species are observed on the oxide surface, one of them being ...