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Title: Nanoceria Supported Single-Atom Platinum Catalysts for Direct Methane Conversion

Journal Article · · ACS Catalysis
 [1];  [1];  [2];  [3];  [4];  [1];  [3];  [4];  [1]
  1. Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Chemical and Biomolecular Engineering
  2. Shanghai Univ., Shanghai (China). Shanghai Univ. Materials Genome Inst. and Shanghai Materials Genome Inst.
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
  4. Purdue Univ., West Lafayette, IN (United States). School of Chemical Engineering

Nanoceria-supported atomic Pt catalysts (denoted as Pt1@CeO2) have been synthesized and demonstrated with advanced catalytic performance for the non-oxidative, direct conversion of methane. These catalysts were synthesized by calcination of Pt-impregnated porous ceria nanoparticles at high temperature (ca. 1,000 °C), with the atomic dispersion of Pt characterized by combining aberra-tion-corrected high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), X-ray photoelectron spectroscopy (XPS), X-ray absorption spec-troscopy (XAS) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) analyses. The Pt1@CeO2 catalysts exhibited much superior catalytic performance to its nanoparticulated counterpart, achieving 14.4% of methane conversion at 975 °C and 74.6% selectivity toward C2 products (ethane, ethylene and acetylene). Comparative studies of the Pt1@CeO2 catalysts with different loadings as well as the nanoparticulated counterpart reveal the single-atom Pt to be the active sites for selective conversion of methane into C2 hydrocarbons.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704; AC02-06CH11357
OSTI ID:
1431456
Report Number(s):
BNL-203465-2018-JAAM
Journal Information:
ACS Catalysis, Vol. 8; ISSN 2155-5435
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 150 works
Citation information provided by
Web of Science

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Cited By (16)

Atomically dispersed nickel as coke-resistant active sites for methane dry reforming journal November 2019
A sacrificial Zn strategy enables anchoring of metal single atoms on the exposed surface of holey 2D molybdenum carbide nanosheets for efficient electrocatalysis journal January 2020
A universal ligand mediated method for large scale synthesis of transition metal single atom catalysts journal October 2019
Oxidative Methane Conversion to Ethane on Highly Oxidized Pd/CeO 2 Catalysts Below 400 °C journal January 2020
High temperature shockwave stabilized single atoms journal August 2019
Highly stable and Active Cu 1 /CeO 2 Single-Atom Catalyst for CO Oxidation: A DFT Study journal November 2018
Effect of Hexadecylpyridinium Bromide (HDPB) on Morphology and Electrocatalytic Performance of Porous Palladium Nanoparticles journal January 2020
Tuning the Catalytic Preference of Ruthenium Catalysts for Nitrogen Reduction by Atomic Dispersion journal November 2019
Atomic (single, double, and triple atoms) catalysis: frontiers, opportunities, and challenges journal January 2019
Mo 6 S 8 -based single-metal-atom catalysts for direct methane to methanol conversion journal July 2019
Cerium(III) Nitrate Derived CeO 2 Support Stabilising PtO x Active Species for Room Temperature CO Oxidation journal January 2020
The TiO 2 topotactic transformation assisted trapping of an atomically dispersed Pt catalyst for low temperature CO oxidation journal January 2019
Catalytic Conversion of Methane at Low Temperatures: A Critical Review journal November 2019
Non‐oxidative Methane Coupling over Silica versus Silica‐Supported Iron(II) Single Sites journal June 2020
Interfacial CoO x Layers on TiO 2 as an Efficient Catalyst for Solvent-Free Aerobic Oxidation of Hydrocarbons journal October 2018
Insight into the active site and reaction mechanism for selective oxidation of methane to methanol using H 2 O 2 on a Rh 1 /ZrO 2 catalyst journal January 2020

Figures / Tables (4)


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