Regeneration of Ni–Zr Methane Dry Reforming Catalysts in CO₂: Reduction of Coking and Ni Redispersion

ACS Catalysis, Journal Year: 2025, Volume and Issue: 15(4), P. 3314 - 3327

Published: Feb. 10, 2025

Bimetallic Ni–Zr layers on top of a Zr metal substrate are oxidatively transformed into an active Ni metal–ZrO2 interfacial state under methane dry reforming (DRM) conditions, which exhibits progressive coking with increasing DRM cycle number and time. Complementing established anticoking catalyst- process-design strategies, the efficiency, as well structural surface-chemical consequences intermediate regeneration using pure CO2, were studied. By combining repeated catalytic testing, X-ray photoelectron spectroscopy, chemically resolved scanning electron microscopy, we show that catalyst inverse Boudouard reaction not only depletes main part deposited coke efficiently but also leads to improved particularly exhibiting redispersion toward small particles optimized Ni/ZrO2 dimensions.

Language: Английский

Tailoring Ni + Sr-MgO Catalysts for Efficient Dry Reforming of Methane: A Performance Study

Catalysis Letters, Journal Year: 2025, Volume and Issue: 155(4)

Published: Feb. 26, 2025

Language: Английский

Mg-modified Ni-based catalysts prepared by the solution combustion synthesis for dry reforming of methane

Catalysis Today, Journal Year: 2025, Volume and Issue: unknown, P. 115261 - 115261

Published: March 1, 2025

Language: Английский