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Title: Confined Ultrathin Pd-Ce Nanowires with Outstanding Moisture and SO2 Tolerance in Methane Combustion

Journal Article · · Angewandte Chemie (International Edition)
 [1];  [2];  [2];  [2];  [2];  [3]; ORCiD logo [3];  [4]; ORCiD logo [5]
  1. Nanchang Univ. (China). Inst. of Applied Chemistry; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Nanchang Univ. (China). Inst. of Applied Chemistry
  3. Shanghai Jiao Tong Univ. (China)
  4. Shanghai Jiao Tong Univ. (China); Univ. of Tennessee, Knoxville, TN (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)

Abstract An efficient strategy (enhanced metal oxide interaction and core–shell confinement to inhibit the sintering of noble metal) is presented confined ultrathin Pd‐CeO x nanowire (2.4 nm) catalysts for methane combustion, which enable CH 4 total oxidation at a low temperature of 350 °C, much lower than that of a commercial Pd/Al 2 O 3 catalyst (425 °C). Importantly, unexpected stability was observed even under harsh conditions (800 °C, water vapor, and SO 2 ), owing to the confinement and shielding effect of the porous silica shell together with the promotion of CeO 2 . Pd‐CeO x solid solution nanowires (Pd‐Ce NW) as cores and porous silica as shells (Pd‐CeNW@SiO 2 ) were rationally prepared by a facile and direct self‐assembly strategy for the first time. This strategy is expected to inspire more active and stable catalysts for use under severe conditions (vehicle emissions control, reforming, and water–gas shift reaction).

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States); Nanchang Univ. (China); Shanghai Jiao Tong Univ. (China)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Key Research and Development Program of China; National Natural Science Foundation of China (NSFC); Natural Science Foundation of Jiangxi Province; Foundation of State Key Lab. of Coal Clean Utilization and Ecological Chemical Engineering, China
Grant/Contract Number:
AC05-00OR22725; 2016YFC0205900; 21503106; 21567016; 21773106; 20171BCB23016; 20171BAB203024; 2016-15
OSTI ID:
1479715
Alternate ID(s):
OSTI ID: 1459724
Journal Information:
Angewandte Chemie (International Edition), Vol. 57, Issue 29; ISSN 1433-7851
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 121 works
Citation information provided by
Web of Science

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Ni@HC Core–Shell Structured Catalysts for Dry Reforming of Methane and Carbon Dioxide journal July 2019
Ultrafine PdO x nanoparticles on spinel oxides by galvanic displacement for catalytic combustion of methane journal January 2019
MOF-derived Ni@NC catalyst: synthesis, characterization, and application in one-pot hydrogenation and reductive amination journal January 2019
Taming the stability of Pd active phases through a compartmentalizing strategy toward nanostructured catalyst supports journal April 2019
Synthesis, growth mechanisms, and applications of palladium-based nanowires and other one-dimensional nanostructures journal January 2019
Tuning Acidity of Sulfonated Mesoporous Polymers (MP−SO 3 H) for Efficient Tetrahydropyranylation of Alcohols at Room Temperature journal January 2020
An active, selective, and stable manganese oxide-supported atomic Pd catalyst for aerobic oxidation of 5-hydroxymethylfurfural journal January 2019
Bowtie-Shaped NiCo 2 O 4 Catalysts for Low-Temperature Methane Combustion journal January 2019
Optimum Balance of Cu + and Oxygen Vacancies of CuO x -CeO 2 Composites for CO Oxidation Based on Thermal Treatment: Optimum Balance of Cu + and Oxygen Vacancies of CuO x -CeO 2 Composites for CO Oxidation Based on Thermal Treatment journal March 2019
Boosting the catalysis of gold by O2 activation at Au-SiO2 interface journal January 2020
Templated synthesis of nickel nanoparticles embedded in a carbon layer within silica capsules journal January 2020
In situ DRIFT spectroscopy insights into the reaction mechanism of CO and toluene co-oxidation over Pt-based catalysts journal January 2019
High-density surface protuberances endow ternary PtFeSn nanowires with high catalytic performance for efficient alcohol electro-oxidation journal January 2019

Figures / Tables (4)