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Title: Low Temperature Propane Oxidation over Co3O4 based Nano-array Catalysts. Ni Dopant Effect, Reaction Mechanism and Structural Stability

Journal Article · · Applied Catalysis B: Environmental
 [1];  [2];  [1];  [1];  [3];  [1];  [3];  [1];  [1]
  1. Univ. of Connecticut, Storrs, CT (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. National Univ. of Singapore (Singapore)

Low temperature propane oxidation has been achieved by Co3O4-based nano-array catalysts featuring low catalytic materials loading. The Ni doping into the Co3O4 lattice has led to enhanced reaction kinetics at low temperature by promoting the surface lattice oxygen activity. In situ DRIFTS investigation in tandem with isotopic oxygen exchange reveals that the propane oxidation proceeds via Mars-van Krevelen mechanism where surface lattice oxygen acts as the active site whereas O2 in the reaction feed does not directly participate in CO2 formation. The Ni doping promotes the formation of less stable carbonates on the surface to facilitate the CO2 desorption. The thermal stability of Ni doped Co3O4 decreases with increased Ni concentration while catalytic activity increases. A balance between enhanced activity and compromised thermal stability shall be considered in the Ni doped Co3O4 nano-array catalysts for low temperature hydrocarbon oxidation. This study provides useful and timely guidance for rational catalyst design toward low temperature catalytic oxidation.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1213987
Alternate ID(s):
OSTI ID: 1398071
Journal Information:
Applied Catalysis B: Environmental, Vol. 180, Issue 1; ISSN 0926-3373
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 144 works
Citation information provided by
Web of Science

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Monolithic LaBO 3 (B=Mn, Co or Ni)/Co 3 O 4 /cordierite Catalysts for o ‐Xylene Combustion journal May 2019
Low temperature CO oxidation catalysed by flower-like Ni–Co–O: how physicochemical properties influence catalytic performance journal January 2018
Facet‐Dependent Activity of Co 3 O 4 Catalyst for C 3 H 8 Combustion journal October 2019
Nonprecious mixed oxide catalysts Co3AlO and Co2NiAlO derived from nanoflowerlike cobalt-based hydrotalcites for highly efficient oxidation of nitric oxide journal January 2016
Decreasing Co3O4 Particle Sizes by Ammonia-Etching and Catalytic Oxidation of Propane journal January 2017
Copper manganese oxide enhanced nanoarray-based monolithic catalysts for hydrocarbon oxidation journal January 2018
Catalytic Glycolysis of Poly(ethylene terephthalate) Using Zinc and Cobalt Oxides Recycled from Spent Batteries journal September 2019
Gaseous CO and toluene co-oxidation over monolithic core–shell Co 3 O 4 -based hetero-structured catalysts journal January 2019
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Catalytic oxidation of propane over palladium alloyed with gold: an assessment of the chemical and intermediate species journal January 2018
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Oxidant free conversion of alcohols to nitriles over Ni-based catalysts text January 2019