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Figure 4
Image of the catalyst bed (top) with the inlet molar flow rate of each species (Fi,in) and the catalyst activity profiles measured operando at beamline P21.1. Species concentration profiles of (a) C2H6, O2, H2O and CO; (d) H2O and CO; (b) C2H4, H2, CO2 and CH4; (e) CO2 and CH4; (c) conversion profiles of C2H6 and O2; (f) selectivity profiles of C2H4, CO, CH4 and CO2; and (c) temperature profile measured in the center of the catalyst bed. α (black line, 18 mm) marks the position of full gas phase oxygen conversion with different catalyst performance before and after. β (gray area) marks the catalyst bed range where the catalyst undergoes distinct phase transformations (see Section 3.2[link]). Reaction conditions: C2H6/O2/N2:10/10/80, 515°C, 1 bar, OD 6 mm/ID 5.0 mm, 30 mm catalyst bed, 12 ml min−1, 30 wt% MoO3/γ-Al2O3.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 30| Part 3| May 2023| Pages 571-581
https://doi.org/10.1107/S1600577523001613
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