Reduction kinetics of SrFeO3−δ/CaO·MnO nanocomposite as effective oxygen carrier for chemical looping partial oxidation of methane

Wang, Xinhe; Yang, Liuqing; Ji, Xiaolin; Gao, Yunfei; Li, Fanxing; Zhang, Junshe; Wei, Jinjia

doi:10.1007/s11705-022-2188-5

Cited by 8 publications

(1 citation statement)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The impregnation of SrFeO 3−δ with particles of Ag or CeO 2 has been exploited in chemical looping catalytic systems for selective oxidation reactions, , leading to more active OCs as compared to the unmodified SrFeO 3−δ . , Metal oxides, such as CeO 2 , , CaO, or FeO x , , introduced to the bulk of OC particles can also affect the rate of oxygen release from the perovskite, resulting in improved performance in chemical looping selective oxidation reactions. However, the effect of Ag or metal oxides as additives on altering the availability of oxygen and the rate of reduction of SrFeO 3−δ in chemical looping air separation has not been studied systematically.…”

Section: Introductionmentioning

confidence: 99%

Kinetic and Thermodynamic Enhancement of Low-Temperature Oxygen Release from Strontium Ferrite Perovskites Modified with Ag and CeO₂

Harrison,

Kwong,

Zheng

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

The redox behavior of the nonstoichiometric perovskite oxide SrFeO 3−δ modified with Ag, CeO 2 , and Ce was assessed for chemical looping air separation (CLAS) via thermogravimetric analysis and by cyclic release and uptake of O 2 in a packed bed reactor. The results demonstrated that the addition of ∼15 wt % Ag at the surface of SrFeO 3−δ lowers the temperature of oxygen release in N 2 by ∼60 °C (i.e., from 370 °C for bare SrFeO 3−δ to 310 °C) and more than triples the amount of oxygen released per CLAS cycle at 500 °C. Impregnation of SrFeO 3−δ with Ag increased the concentration of oxygen vacancies at equilibrium, lowering (3 − δ) under all investigated oxygen partial pressures. The addition of CeO 2 at the surface or into the bulk of SrFeO 3−δ resulted in more modest changes, with a decrease in temperature for O 2 release of 20−25 °C as compared to SrFeO 3−δ and a moderate increase in oxygen yield per reduction cycle. The apparent kinetic parameters for reduction of SrFeO 3−δ , with Ag and CeO 2 additives, were determined from the CLAS experiments in a packed bed reactor, giving activation energies and pre-exponential factors of E a,reduction = 66.

show abstract

Section: Introductionmentioning

confidence: 99%

Kinetic and Thermodynamic Enhancement of Low-Temperature Oxygen Release from Strontium Ferrite Perovskites Modified with Ag and CeO₂

Harrison,

Kwong,

Zheng

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

show abstract

Chemical looping for upgrading light alkanes: oxygen carriers, reaction kinetics, and reactor design

Chen,

Pei,

et al. 2024

Sci. China Chem.

View full text Add to dashboard Cite

DFT insights into oxygen vacancy formation and chemical looping dry reforming of methane on metal-substituted CeO2 (111) surface

Chen,

Wang,

et al. 2024

Front. Chem. Sci. Eng.

View full text Add to dashboard Cite

Reduction kinetics of SrFeO3−δ/CaO·MnO nanocomposite as effective oxygen carrier for chemical looping partial oxidation of methane

Cited by 8 publications

References 37 publications

Kinetic and Thermodynamic Enhancement of Low-Temperature Oxygen Release from Strontium Ferrite Perovskites Modified with Ag and CeO₂

Kinetic and Thermodynamic Enhancement of Low-Temperature Oxygen Release from Strontium Ferrite Perovskites Modified with Ag and CeO₂

Chemical looping for upgrading light alkanes: oxygen carriers, reaction kinetics, and reactor design

DFT insights into oxygen vacancy formation and chemical looping dry reforming of methane on metal-substituted CeO2 (111) surface

Contact Info

Product

Resources

About

Reduction kinetics of SrFeO3−δ/CaO·MnO nanocomposite as effective oxygen carrier for chemical looping partial oxidation of methane

Cited by 8 publications

References 37 publications

Kinetic and Thermodynamic Enhancement of Low-Temperature Oxygen Release from Strontium Ferrite Perovskites Modified with Ag and CeO2

Kinetic and Thermodynamic Enhancement of Low-Temperature Oxygen Release from Strontium Ferrite Perovskites Modified with Ag and CeO2

Chemical looping for upgrading light alkanes: oxygen carriers, reaction kinetics, and reactor design

DFT insights into oxygen vacancy formation and chemical looping dry reforming of methane on metal-substituted CeO2 (111) surface

Contact Info

Product

Resources

About

Kinetic and Thermodynamic Enhancement of Low-Temperature Oxygen Release from Strontium Ferrite Perovskites Modified with Ag and CeO₂

Kinetic and Thermodynamic Enhancement of Low-Temperature Oxygen Release from Strontium Ferrite Perovskites Modified with Ag and CeO₂