Basic metal oxide integrated DBD packed bed reactor for the decomposition of CO2

Plasma Catalysis-Driven Decomposition of CO2: Optimizing Energy Distribution with NiCo-CuO Catalyst

“…These species undergo synergistic interactions with the catalyst, leading to the efficient breakdown of CO 2 into CO and O 2 , with ozone being a minor byproduct. The decomposition process is characterized by several parallel reaction pathways, including electron impact dissociation of CO 2 and the splitting of vibrationally excited CO 2 molecules, as outlined by the following reactions , normalC normalO 2 + e − → C O + normalO + e − ; goodbreak0em1em⁣ goodbreak0em1em⁣ E normald normali normals = 6.1 .25em e V normalC normalO 2 + e − → C O + O − ; goodbreak0em2em⁣ E normala normalt normalt = 3.4 − 10 .25em e V normalC normalO 2 + e − → normalC normalO 2 + + 2 normale − ; goodbreak0em2em⁣ E normali normalo normaln = 13.8 .25em e V normalC normalO 2…”

“…This suggests that while the catalyst increases the overall current, it may also influence the distribution and behavior of the current filaments within the plasma, potentially affecting the plasma reactivity and the efficiency of the chemical processes it facilitates Figure c presents the Lissajous figures for different catalyst loadings, where variations in the slope, height, and width of these figures indicate substantial changes in electrical behavior consequent to different catalyst incorporations. , An equivalent circuit model, depicted in Figure S5, facilitated the estimation of parameters such as dielectric capacitance, breakdown voltage, and reduced electric field, with pertinent values enumerated in Table S2.…”

“…These species undergo synergistic interactions with the catalyst, leading to the efficient breakdown of CO 2 into CO and O 2 , with ozone being a minor byproduct. The decomposition process is characterized by several parallel reaction pathways, including electron impact dissociation of CO 2 and the splitting of vibrationally excited CO 2 molecules, as outlined by the following reactions , …”

“…Various studies have highlighted the potential of specific catalysts, such as CeO 2 nanorods for their high oxygen vacancy density, and MO/γ-Al 2 O 3 catalysts for modifying the discharge characteristics within coaxial DBD reactors . Additionally, the integration of SrO-loaded γ-Al 2 O 3 has been demonstrated to enhance CO 2 conversion efficiency in the plasma catalysis system, attributing to increased charge deposition and altered gas-phase chemistry with the catalyst integration . Despite these advancements, the challenge of achieving high conversion rates and energy efficiency remains, necessitating the optimization of reactor parameters and catalyst design tailored to plasma conditions. ,− …”

Nonthermal Plasma-Assisted Enhanced CO2 Conversion over NiOx/γ-Al2O3 Catalyst

“…In recent years, there has been a rising interest in utilizing plasma technology for the nonthermal conversion of carbon dioxide (CO 2 ). Various types of plasma reactors are currently under investigation, including dielectric barrier discharge (DBD), corona discharge, gliding arc discharge, glow discharge, microwave discharge, and radio frequency discharge. − Among these, DBD stands out as a valuable method for CO 2 conversion, capable of operating at ambient room temperature and atmospheric pressure. DBD offers the advantage of maintaining low gas temperatures, while the electrons involved in the discharge processes possess energies ranging from 1 to 10 eV .…”