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Carbon, Nitrogen, and Sulfur Chemistry
Published in Jerome Greyson, Carbon, Nitrogen, and Sulfur Pollutants and Their Determination in Air and Water, 2020
The catalytic oxidation of sulfur dioxide to sulfur trioxide serves as the basis of the manufacture of sulfuric acid. That is, the SO3 produced is dissolved in water to form the acid. SO3+H2O=H2SO4
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Published in Anthony Peter Gordon Shaw, Thermitic Thermodynamics, 2020
Noxious and acidic fumes are produced when elemental sulfur and most sulfur-containing compounds combust. Sulfur dioxide (SO2) is the most probable gas, although some sulfur trioxide (SO3) may form under the right conditions if enough oxygen is available. Sulfur monoxide (SO) is only stable at high temperatures. Sulfur dioxide is soluble in water, and the resulting solutions are moderately acidic. Sulfur trioxide is the anhydride of sulfuric acid (H2SO4), an industrial strong acid. Vast quantities of sulfuric acid are produced every year by the catalytic oxidation of elemental sulfur (2S + 3O2 → 2SO3) and careful hydrolysis of the resulting anhydride (SO3 + H2O → H2SO4). Sulfur trioxide and sulfuric acid are vigorously hygroscopic.
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Published in Salmi Tapio, Mikkola Jyri-Pekka, Wärnå Johan, Chemical Reaction Engineering and Reactor Technology, 2019
Salmi Tapio, Mikkola Jyri-Pekka, Wärnå Johan
Sulfur trioxide is formed in the catalytic oxidation of sulfur dioxide over a vanadium pentoxide (V2O5) catalyst: SO2+12O2⇄SO3.
Selective detection of sulfur trioxide in the presence of environmental gases by AlN nanotube
Published in Journal of Sulfur Chemistry, 2022
A. A. Menazea, Nasser S. Awwad, Hala A. Ibrahium, Ghaffar Ebaid, H. Elhosiny Ali
The release of toxic gases into the environment is a serious problem in the world today. Thus, numerous researchers are working in order to manufacture various sensors for detecting these toxic gases. Sulfur trioxide is a hazardous chemical compound [1–5] which is produced in a large quantity as a precursor to H2SO4. Gaseous SO3 in the air causes acid rain and carries risks and damages [6]. It will be very corrosive if combined with an oxidizing agent. This gas can quickly react with H2O to yield extremely corrosive H2SO4. Therefore, its identification is very important for researchers [7,8]. Shokuhi Rad et al. [7] have attempted to study the adsorption of SO2, SO3, and O3 gases on B-doped graphene. They concluded that the B-doped graphene (BG) strongly adsorbs the O3 molecules while the adsorption of SO3 and SO2 molecules on this surface is a weak physisorption process.
Substitutional doping of black phosphorene with boron, nitrogen, and arsenic for sulfur trioxide detection: a theoretical perspective
Published in Journal of Sulfur Chemistry, 2020
Mohammad Ghashghaee, Zahra Azizi, Mehdi Ghambarian
Sulfur trioxide (SO3) vapor is a very toxic compound in the SOx pollution family, which is the primary source of acid rain. These pollutants which emit primarily from the burning of fossil fuels are highly corrosive to metals and tissues. Hence, the detection and removal of this compound have been the subject of several publications in the literature [11]. Computations of SO3 on terthiophene as a model of polythiophene led to adsorption energy of 22.6 kJ/mol [12]. The authors noted UV-Vis redshifts upon the interactions. ZnO clusters have also shown to be efficient in the removal of the SO3 molecules [13]. The sensing capability of boron-doped graphene toward SO3 has also been demonstrated at the B3LYP/6-31G(d,p) level [14]. Another group of researchers [15] noted that the minimum energy structure found theoretically for SO3 on Cu(111) was similar to that on Ni(111). Recently, the effect of the electric field on the binding energies of SO3 and CaO(100) has been investigated theoretically [16]. N-doped graphene has shown stronger adsorption ability (51.4 kJ/mol) toward the SO3 molecule [17]. Within stronger electrostatic fields, the adsorption energy had a direct relationship with the sign of the electric field.