Impact of sulfur on catalytic partial oxidation of jet fuel surrogates over Rh/Al 2 O 3

Spatial Concentration Profiles for the Catalytic Partial Oxidation of Jet Fuel Surrogates in a Rh/Al2O3 Coated Monolith

“…The experiments are taken within 10 hours' time on stream. Within this time, the distribution of the reaction products was stable for all fuels, as experimentally confirmed in our previous study [34]. All used fuels were evaporated upstream of the reactor by means of a combination of a CORI-flow (Bronkhorst High-Tech, Ruurlo, The Netherlands) and a CEM (Controlled Evaporator Mixer, Bronkhorst High-Tech).…”

“…As the calculated molar balances indicate at z = −0.5-5 mm an amount of hydrogen and carbon, which is not accounted for by the detected species, a variety of hydrocarbons, including methane and ethylene, are likely to be present in this zone. Measurements with higher reactant concentration support this observation, as significant amounts of methane (~800 ppm) and other by-products (~150 ppm) were generated at the catalyst outlet, especially for fuels with higher sulfur content compared to Su 17_10 and for a higher amount reactive gases of 10% [34]. The temperature profiles show a decrease in temperature downstream of the hot spot, at z > 2.5 mm.…”

“…Nevertheless, a high syngas yield with low by-product formation and stable operation has been achieved for many different hydrocarbons and logistic fuels [1][2][3][4][5][24][25][26][27][28][29][30][31][32][33][34]. Still missing for sulfur-containing jet fuels are spatially-resolved concentration profiles, which are crucial for the understanding of the interplay between the main reactions and side reactions, e.g., cracking reactions, in dependence on the axial position.…”

“…Still missing for sulfur-containing jet fuels are spatially-resolved concentration profiles, which are crucial for the understanding of the interplay between the main reactions and side reactions, e.g., cracking reactions, in dependence on the axial position. A realistic jet fuel, such as specifications of JP-8, JET A, and JET A1 [34], contains sulfur compounds, influencing activity and ageing of the catalyst.…”

“…In a recently published study, we investigated the CPOX of surrogates of jet fuels on Rh and observed an impact of sulfur on conversion and selectivity [34]. Only the CO/CO 2 ratio remained unaffected by the sulfur addition.…”