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CaZrO3 and SrZrO3-based CuO Oxygen Carriers for Chemical-Looping with Oxygen Uncoupling (CLOU)
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- Arjmand, Mehdi, 1986 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Azad, Abdul-Majeed, 1957 (author)
- University of Toledo,Chalmers tekniska högskola,Chalmers University of Technology
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- Leion, Henrik, 1976 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- (creator_code:org_t)
- Elsevier BV, 2014
- 2014
- English.
- In: Energy Procedia. - : Elsevier BV. - 1876-6102. ; 51, s. 75-84
- Conference paper (peer-reviewed)
Abstract
Subject headings
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- The chemical-looping combustion (CLC) and chemical-looping with oxygen uncoupling (CLOU) processes are novel solutions for efficient combustion with inherent separation of carbon dioxide. In this work, oxygen carriers based on CuO supported by zirconates of SrZrO3 and CaZrO3 are investigated. The oxygen carriers were produced by mechanical homogenization of primary solids in a rotary evaporator followed by extrusion, drying and calcination at 950 and 1030 degrees C for 6 h. Their chemical-looping performance was evaluated in a laboratory-scale fluidized-bed reactor at 900 and 925 degrees C under cyclic oxidizing, inert (N-2) and reducing (CH4) conditions. All oxygen carriers exhibited rapid release of oxygen in the inert environment (CLOU) with high conversion of methane. The carrier calcined at 1030 degrees C with SrZrO3 as support showed no agglomeration or deactivation and exhibited the highest reactivity. Thus, the use of this oxygen carrier could be of interest for the CLOU process.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Keyword
- chemical-looping combustion (CLC)
- CO2-capture
- copper oxide
- zirconate
- chemical-looping with oxygen uncoupling (CLOU)
- oxygen carrier
Publication and Content Type
- kon (subject category)
- ref (subject category)
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