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Oxidative Dehydrogenation of Ethane: A Chemical Looping Approach

Journal Article · · Energy Technology
 [1];  [2];  [3];  [2]
  1. North Carolina State Univ., Raleigh, NC (United States); DOE/OSTI
  2. North Carolina State Univ., Raleigh, NC (United States)
  3. EcoCatalytic Technologies LLC, Monmouth Junction, NJ (United States)

The current study investigates a chemical-looping-based oxidative dehydrogenation (CL-ODH) concept for ethane-to-ethylene conversion. In this cyclic redox scheme, an oxide-based redox catalyst is used to selectively combust hydrogen from ethane dehydrogenation. As the hydrogen product limits ethane conversion, in situ oxidation of hydrogen enhances the ethane conversion and ethylene yield. Moreover, heat required in ODH is compensated by re-oxidation of the oxygen-deprived redox catalyst, enabling auto-thermal operation for the overall process. Compared to steam cracking, CL-ODH can potentially achieve higher efficiency with lower CO2 and NOx emissions. Silica and magnesia-supported manganese oxides are investigated. It is determined that unpromoted Mn/SiO2 and Mn/MgO redox catalysts exhibit low selectivity towards ethylene. The addition of promoters such as sodium and tungsten renders effective redox catalysts with satisfactory activity, selectivity, oxygen carrying capacity, and redox stability.

Research Organization:
Bio2electric, LLC, Princeton, NJ (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Grant/Contract Number:
AR0000327
OSTI ID:
1533166
Alternate ID(s):
OSTI ID: 1400563
Journal Information:
Energy Technology, Journal Name: Energy Technology Journal Issue: 10 Vol. 4; ISSN 2194-4288
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Manganese-containing redox catalysts for selective hydrogen combustion under a cyclic redox scheme journal April 2018
Modular‐scale ethane to liquids via chemical looping oxidative dehydrogenation: Redox catalyst performance and process analysis journal February 2019
Effect of Supports on the Redox Performance of NiFe 2 O 4 in a Chemical Looping Process journal June 2019
Reduction Kinetics of Perovskite Oxides for Selective Hydrogen Combustion in the Context of Olefin Production journal September 2019
Metal oxide redox chemistry for chemical looping processes journal October 2018
Enhancing the capacity of oxygen carriers for selective oxidations through phase cooperation: bismuth oxide and ceria–zirconia journal January 2018
Redox oxidative cracking of n -hexane with Fe-substituted barium hexaaluminates as redox catalysts journal January 2019
Chemical looping beyond combustion – a perspective journal January 2020
MoO 3 /Al 2 O 3 catalysts for chemical-looping oxidative dehydrogenation of ethane journal January 2020
Production of Ethylene from Ethane Fraction by a Method Alternative to Steam Cracking journal November 2019
Enhancing the capacity of oxygen carriers for selective oxidations through phase cooperation: Bismuth oxide and ceria-zirconia text January 2018
Chemical looping beyond combustion – a perspective text January 2020