Journal
ACS CATALYSIS
Volume 4, Issue 8, Pages 2714-2717Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cs500809w
Keywords
dry reforming of methane; heterogeneous catalysis; molecular layer deposition; thin films; catalyst stability
Categories
Funding
- National Science Foundation [CBET 1067800, CBET 0854251]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1067800, 0854251] Funding Source: National Science Foundation
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To inhibit sintering of similar to 5 nm supported Ni particles during dry reforming of methane (DRM), catalysts were stabilized with porous alumina grown by ABC alucone molecular layer deposition (MLD). The uncoated catalyst continuously deactivated during DRM at 973 K In contrast, the DRM rates for the MLD-coated catalysts initially increased before stabilizing, consistent with an increase in the exposed nickel surface area with exposure to high temperatures. Post-reaction particles were smaller for the MLD-coated catalysts. Catalysts with only 5 MLD layers had higher DRM rates than the uncoated catalyst, and a sample with 10 MLD layers remained stable for 108 h.
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