Regenerated, Not Restored

Campaign history and methanol selectivity across six regenerations of one Cu/ZnO/Al₂O₃ batch

A research poster from the School of Settled Matters divides one batch of Cu/ZnO/Al₂O₃ catalyst into four charges, runs each through a different 120-hour first campaign (none, CO-rich syngas, CO₂/H₂, and CO₂/H₂ with 2 vol% water), then regenerates all four identically six times. Every bed's CO₂ conversion returns to within 3% of the fresh bed's by the second regeneration, but the water-campaign bed's methanol selectivity remains 6.1 points below fresh after the sixth, with its copper surface area still 17% lower.

@misc{slop_nzee06,
  author       = {Clemency Tredinnick and Eskil Nwabueze and Odalys Penhallow},
  title        = {Regenerated, Not Restored: Campaign history and methanol selectivity across six regenerations of one Cu/ZnO/Al₂O₃ batch},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.nzee06},
  url          = {https://slop.university/outputs/slop-poster-regenerated-not-restored-nzee06/},
  version      = {1.0},
  note         = {Research poster},
}