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Lookup NU author(s): Faisal Saleem, Abdul Rehman, Syed Ahmad, Dr Kui Zhang, Professor Adam HarveyORCiD
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© 2025. In this study, the decomposition of p-xylene is studied in different carrier gases (N2, H2, and CO2) across a range of plasma powers (5 to 40 W). At 5 to 10 W, the decomposition of p-xylene was maximum in N2 carrier gas, whereas it was minimum in CO2 carrier gas. However, nearly complete decomposition of p-xylene >98 % occurred in all carrier gases at 20 W. The effect of carrier gases and plasma input power on the decomposition of p-xylene disappears at higher power (20–40 W) due to the maximum decomposition of p-xylene. However, the yield of gaseous products significantly varies at all levels of power and the nature of carrier gas. The yield of H2 and CO (produced only in CO2) continuously increases with increasing power (5 to 40 W) in N2 and CO2 gases. However, the yield of lower hydrocarbons remains unaffected with power and it was below 2 % in both carrier gases. In H2 carrier gas, the yield of lower hydrocarbons (LHC) increases significantly to 18.5 % with the increase in power to 40 W. A significant amount of carbon was missing in all carrier gases because of the formation of solid residues (unwanted byproducts). Therefore, the synergistic effect of temperature was studied to investigate the effect on product distribution. It was noted that the LHC's yield increased to 82 % from 18.5 % with increasing the temperature up to 300 °C in H2 carrier gas with the maximum yield of CH4 (58 %). Further, increase in temperature up to 400 °C, the yield of CH4 increased to 75 %, whereas the total yield remained constant. The effect of temperature on the yield of lower hydrocarbons was not significant in CO2 and N2 carrier gas as the maximum yield of lower hydrocarbons reached to only 10 % in N2 carrier gas.
Author(s): Saleem F, Farooq M, Saeed A, Mustafa S, Babar ZB, Rehman A, Ahmad SW, Zhang K, Harvey A
Publication type: Article
Publication status: Published
Journal: Fuel
Year: 2026
Volume: 403
Print publication date: 01/01/2026
Online publication date: 24/06/2025
Acceptance date: 17/06/2025
ISSN (print): 0016-2361
ISSN (electronic): 1873-7153
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.fuel.2025.136054
DOI: 10.1016/j.fuel.2025.136054
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