articleACS CatalysisAug 15, 2022Closed access

Frustrated Lewis Pairs Boosting Low-Temperature CO 2 Methanation Performance over Ni/CeO 2 Nanocatalysts

YXYu XieJCJianjun ChenXWXi WuJWJunjie WenRZRu Zhao

Kunming University of Science and Technology · State Key Joint Laboratory of Environment Simulation and Pollution Control · +1 more institution

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Abstract

Deciphering the relationship between the active-site structure and CO2 methanation mechanism over Ni-based catalysts faces great challenges. Herein, different distributions of frustrated Lewis pair (FLP) structures were precisely fabricated over Ni/CeO2-nanorods, Ni/CeO2-nanocubes, and Ni/CeO2-nanooctahedra to make progress in this issue. Ni/CeO2-nanorods presented the highest possibility for FLP construction among these catalysts due to their CeO2 (110) nature and the steric hindrance between the oxygen vacancy (OV) and hydroxyl species (OH). Compared to other samples with fewer FLPs, FLPs-enriched Ni/CeO2-nanorods showed a significantly higher CO2 conversion (84.2%) and a CH4 productivity of up to 147.1 mmol…

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353
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10

Topics & keywords

Topics
Keywords
  • Nanorod
  • Methanation
  • Catalysis
  • Nanomaterial-based catalyst
  • Raman spectroscopy
  • Density functional theory
  • Diffuse reflectance infrared fourier transform
  • Chemistry
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