Stable High-Pressure Methane Dry Reforming Under Excess of CO2

Abstract
Dry reforming of methane (DRM), the conversion of carbon dioxide and methane into syngas, offers great promise for the recycling of CO2. However, fast catalyst deactivation, especially at the industrially required high pressure, still hampers this process. Here we present a comprehensive study of DRM operation at high pressure (7–28 bars). Our results demonstrate that, under equimolar CH4 : CO2 mixtures, coke formation is unavoidable at high pressures for all catalysts under study. However, under substoichiometric CH4 : CO2 ratios (1 : 3), a stable high pressure operation can be achieved for most catalysts with no sign of deactivation for at least 60 hours at 14 bars, 800 °C and 7500 h−1. In addition to the enhanced stability, under these conditions, the amount of CO2 abated per mol of CH4 fed increases by a 50 %.

Citation
Gascon, J., Ramirez, A., Lee, K., Harale, A., Gevers, L., Telalovic, S., & Al Solami, B. (2020). Stable High-Pressure Methane Dry Reforming Under Excess of CO2. ChemCatChem. doi:10.1002/cctc.202001049

Acknowledgements
Funding for this work was provided by Saudi Aramco and King Abdullah University of Science and Technology (KAUST).

Publisher
Wiley

Journal
ChemCatChem

DOI
10.1002/cctc.202001049
10.1002/cctc.202001721

Additional Links
https://onlinelibrary.wiley.com/doi/abs/10.1002/cctc.202001049

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