2014
DOI: 10.1021/cs5008415
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Dynamic Methane Partial Oxidation Using a Fe2O3@La0.8Sr0.2FeO3-δ Core–Shell Redox Catalyst in the Absence of Gaseous Oxygen

Abstract: Chemical looping reforming partially oxidizes methane into syngas through cyclic redox reactions of an active lattice-oxygen (O2–) containing redox catalyst. The avoidance of direct contact between methane and steam and/or gaseous oxygen has the potential to eliminate the energy consumption for generating these oxidants, thereby increasing methane conversion efficiency. This article investigates redox catalysts comprised of iron oxide core covered with lanthanum strontium ferrite (LSF) shell. The iron oxide co… Show more

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Cited by 173 publications
(141 citation statements)
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“…Neal et al prepared 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Fe 2 O 3 @La 0.8 Sr 0.2 FeO 3-δ core@shell catalysts for methane partial oxidation. 219 The methane partial oxidation was carried out by applying an autothermal chemical looping reforming (CLR) process which consisted of methane reforming and catalysts regeneration. The syngas yield of Fe 2 O 3 @La 0.8 Sr 0.2 FeO 3-δ core@shell catalysts was about 20% better than that of the Fe 2 O 3 and La 1-x Sr x FeO 3-δ nanocomposite.…”
Section: Acs Catalysismentioning
confidence: 99%
“…Neal et al prepared 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Fe 2 O 3 @La 0.8 Sr 0.2 FeO 3-δ core@shell catalysts for methane partial oxidation. 219 The methane partial oxidation was carried out by applying an autothermal chemical looping reforming (CLR) process which consisted of methane reforming and catalysts regeneration. The syngas yield of Fe 2 O 3 @La 0.8 Sr 0.2 FeO 3-δ core@shell catalysts was about 20% better than that of the Fe 2 O 3 and La 1-x Sr x FeO 3-δ nanocomposite.…”
Section: Acs Catalysismentioning
confidence: 99%
“…Typically, chemical looping studies use O 2 from air as an oxidant to recuperate the oxygen mobile material [26,27], and recent studies have also used steam [28]. Because of the poorer oxidative nature of CO 2 when compared to these two oxidants, maintaining the phase stability of the oxygen carrier is desired because less energy is required to re-oxidize an oxygen vacant material as opposed to recovering its crystalline phase.…”
Section: Introductionmentioning
confidence: 99%
“…It is generally accepted that NiO possesses sufficient activity among the transient metal oxides, but the carbon formation with Ni-based oxygen carriers is prominent in chemical-looping methane combustion (CLMC), and thus is observed mostly at the end of reduction reactions (Rydén et al, 2008a;Cabello et al, 2014a). The challenge of NiO based redox catalysts, however, is their high tendency for coke formation, high cost, and health concerns (Adanez et al, 2012;Neal et al, 2014). Fe-based oxides have the advantages of being cheaper, low agglomeration, high melting point and more environmentally benign (Cabello et al, 2014a;Adanez et al, 2012;Neal et al, 2014Neal et al, , 2015Shafiefarhood et al, 2014;Galinsky et al, 2015).…”
Section: Introductionmentioning
confidence: 99%
“…The challenge of NiO based redox catalysts, however, is their high tendency for coke formation, high cost, and health concerns (Adanez et al, 2012;Neal et al, 2014). Fe-based oxides have the advantages of being cheaper, low agglomeration, high melting point and more environmentally benign (Cabello et al, 2014a;Adanez et al, 2012;Neal et al, 2014Neal et al, , 2015Shafiefarhood et al, 2014;Galinsky et al, 2015). However, iron oxide based redox catalysts are not particularly active for methane oxidation (Cabello et al, 2014a;Shafiefarhood et al, 2014), and tend to have low selectivity toward methane partial oxidation.…”
Section: Introductionmentioning
confidence: 99%
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