Enhancing the catalytic desulfurization capacity of CuO-LaCoO3 using two dielectric barrier discharge configurations

Understanding the Enhanced Catalytic Desulfurization Mechanism: Gas-Phase and Surface Reactions with a CuCeOx Catalyst under Nonthermal Plasma Conditions

“…However, on the time graph, it was observed that NO x could be generated during the corona discharge, indicating that the corona discharge provided sufficient energy for the N 2 – > NO x reaction to occur. Additionally, research suggests a direct relationship between the formation of ground-state NO x and the metastable particle N 2 (A 3 Σ u + ). , Furthermore, the transition of ground-state NO x to higher energy states primarily relies on the metastable particle N 2 (A 3 Σ u + ), as is shown in the above equations.…”

“…Among the various oxygen species in the system, the ground-state O( 3 P) is the most abundant, with a density of 10.20 × 10 18 /m 3 . It can be further excited to O( 1 D) through electron collisions, and O( 1 D) can undergo further excitation to higher energy excited species with electron excitation, , as shown in eqs and : normalO ( P 3 ) + e → normalO ( D 1 ) + e normalO ( D 1 ) + e → normalO ( S 1 ) + e …”

“…According to existing studies, during corona discharge, O 2 undergoes weak ionization to produce oxygen radicals, which then undergo chemical reactions with discharge gas in the presence of oxygen to generate ozone, , as shown in eqs –: e + normalO 2 → e + O • + normalO ( D 1 ) e + normalO 2 → e + O • + O • e + normalO 2 → O • + normalO − normalO + normalO 2 + normalM → normalO 3 + normalM normalM = normalN 2 .25em or .25em normalO 2 …”

“…Based on existing literature, ,− the NTP-enhanced catalytic process can be summarized into two main modes based on reactor design and the position in the multiphase catalytic process. The first involves simultaneous NTP and multiphase catalytic processes (IPC), while the second entails NTP excitation and transforming gaseous pollutants into reactive species that are easily decomposed catalytically, with these reactive species participating in the multiphase catalytic process (PPC). , The typical configurations of IPC and PPC are illustrated in Figure b,c, respectively.…”

“…According to existing studies, during corona discharge, O 2 undergoes weak ionization to produce oxygen radicals, which then undergo chemical reactions with discharge gas in the presence of oxygen to generate ozone, , as shown in eqs –: …”