skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A molten carbonate shell modified perovskite redox catalyst for anaerobic oxidative dehydrogenation of ethane

Journal Article · · Science Advances

Acceptor-doped, redox-active perovskite oxides such as La0.8Sr0.2FeO3(LSF) are active for ethane oxidation to COxbut show poor selectivity to ethylene. This article reports molten Li2CO3as an effective “promoter” to modify LSF for chemical looping–oxidative dehydrogenation (CL-ODH) of ethane. Under the working state, the redox catalyst is composed of a molten Li2CO3layer covering the solid LSF substrate. The molten layer facilitates the transport of active peroxide (O22-) species formed on LSF while blocking the nonselective sites. Spectroscopy measurements and density functional theory calculations indicate that Fe4+→Fe3+transition is responsible for the peroxide formation, which results in both exothermic ODH and air reoxidation steps. With >90% ethylene selectivity, up to 59% ethylene yield, and favorable heat of reactions, the core-shell redox catalyst has an excellent potential to be effective for intensified ethane conversion. The mechanistic findings also provide a generalized approach for designing CL-ODH redox catalysts.

Research Organization:
American Institute of Chemical Engineers (AIChE), New York, NY (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0007888
OSTI ID:
1803998
Journal Information:
Science Advances, Vol. 6, Issue 17; ISSN 2375-2548
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

References (39)

Metal oxide redox chemistry for chemical looping processes journal October 2018
Effects of Sodium and Tungsten Promoters on Mg 6 MnO 8 -Based Core–Shell Redox Catalysts for Chemical Looping—Oxidative Dehydrogenation of Ethane journal February 2019
Oxidative dehydrogenation of ethane under a cyclic redox scheme – Process simulations and analysis journal January 2017
Complete Decomposition of Li 2 CO 3 in Li–O 2 Batteries Using Ir/B 4 C as Noncarbon-Based Oxygen Electrode journal February 2017
Ethane Oxidative Dehydrogenation Pathways on Vanadium Oxide Catalysts journal May 2002
Oxidative Dehydrogenation of Ethane over Multiwalled Carbon Nanotubes journal June 2010
Recent Advances in Intensified Ethylene Production—A Review journal August 2019
A novel pulse isotopic exchange technique for rapid determination of the oxygen surface exchange rate of oxide ion conductors journal January 2009
Introducing DDEC6 atomic population analysis: part 1. Charge partitioning theory and methodology journal January 2016
Olefins from conventional and heavy feedstocks: Energy use in steam cracking and alternative processes journal March 2006
Atomic-Scale Determination of Active Facets on the MoVTeNb Oxide M1 Phase and Their Intrinsic Catalytic Activity for Ethane Oxidative Dehydrogenation journal March 2016
Oxidative conversion of ethane involving lattice oxygen of molybdenum systems modified with aluminum, gallium, or yttrium oxide journal September 2016
Catalytic properties of lithium carbonate melts and related slurries for the oxidative dimerization of methane journal January 1989
Oxidative Dehydrogenation of Ethane on Dynamically Rearranging Supported Chloride Catalysts journal August 2014
Probing Lithium Carbonate Formation in Trace-O 2 -Assisted Aprotic Li-CO 2 Batteries Using in Situ Surface-Enhanced Raman Spectroscopy journal January 2019
Effect of Promoters on Manganese-Containing Mixed Metal Oxides for Oxidative Dehydrogenation of Ethane via a Cyclic Redox Scheme journal July 2017
Fluidized bed ODH of ethane to ethylene over VO –MoO /γ-Al2O3 catalyst: Desorption kinetics and catalytic activity journal October 2015
Selective oxidative dehydrogenation of propane to propene using boron nitride catalysts journal December 2016
Manganese silicate based redox catalysts for greener ethylene production via chemical looping – oxidative dehydrogenation of ethane journal September 2018
Revealing how molten salts promote CO 2 capture on CaO via an impedance study and sorption kinetics simulation journal January 2018
Recent conceptual advances in the catalysis science of mixed metal oxide catalytic materials journal February 2005
Oxidative Dehydrogenation of Ethane: Common Principles and Mechanistic Aspects journal March 2013
Alkali Metal-Promoted La x Sr 2– x FeO 4−δ Redox Catalysts for Chemical Looping Oxidative Dehydrogenation of Ethane journal January 2018
Identifying Different Types of Catalysts for CO 2 Reduction by Ethane through Dry Reforming and Oxidative Dehydrogenation journal November 2015
First-Principles Investigation of the Relevant Surfaces Exposed by Polycrystalline LaFeO 3 journal June 2017
Intensified Ethylene Production via Chemical Looping through an Exergetically Efficient Redox Scheme journal September 2019
Active sites for tandem reactions of CO 2 reduction and ethane dehydrogenation journal July 2018
Tuning the electronic structure of SrTiO 3 /SrFeO 3− x superlattices via composition and vacancy control journal April 2014
Introducing DDEC6 atomic population analysis: part 2. Computed results for a wide range of periodic and nonperiodic materials journal January 2016
Perovskite-Type Halo-oxide La1−xSrxFeO3−δXσ (X=F, Cl) Catalysts Selective for the Oxidation of Ethane to Ethene journal January 2000
Oxidative dehydrogenation of ethane using MoO3/Fe2O3 catalysts in a cyclic redox mode journal November 2018
Metal oxides modified NiO catalysts for oxidative dehydrogenation of ethane to ethylene journal June 2014
Modular‐scale ethane to liquids via chemical looping oxidative dehydrogenation: Redox catalyst performance and process analysis journal February 2019
Stability and Characterization of Oxygen Species in Alkali Molten Carbonate: A Thermodynamic and Electrochemical Approach journal November 1993
Li-Promoted La x Sr 2– x FeO 4−δ Core–Shell Redox Catalysts for Oxidative Dehydrogenation of Ethane under a Cyclic Redox Scheme journal September 2016
Mössbauer studies of the phase composition and microstructure of the La 1-x Ca x FeO 3-y system as related to the reactivity of surface and bulk oxygen journal January 2004
Oxidative Dehydrogenation of Ethane: A Chemical Looping Approach journal June 2016
High selectivity epoxidation of ethylene in chemical looping setup journal March 2020
Investigation of the role of surface lattice oxygen and bulk lattice oxygen migration of cerium-based oxygen carriers: XPS and designed H2-TPR characterization journal December 2017