Sol-gel-derived perovskite-based sorbents for high-temperature air separation

Sihar, Ainun Sailah; Alias, Nur Hashimah; Shahruddin, Munawar Zaman; Syed‐Hassan, Syed Shatir A.; Him, Nik Raikhan Nik; Othman, Nur Hidayati

doi:10.1007/s10971-018-4865-x

Cited by 5 publications

(2 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among the various perovskite-based oxygen sorbents investigated to date, ,− the doped strontium ferrite (SrFeO 3‑δ , SF) family of materials exhibit excellent potential for CLAS. , A number of doped SF sorbents, such as Sr x La 1– x FeO 3‑δ , Sr x Ca 1– x FeO 3‑δ , SrFe y Cu 1– y O 3‑δ , and SrFe y Mn 1– y O 3‑δ , have demonstrated suitable thermodynamic properties, excellent redox stability, and significant oxygen-carrying capacity at relatively low temperatures . Despite these merits, the practical utilization of SF-based oxygen sorbents still faces a number of challenges.…”

Section: Introductionmentioning

confidence: 99%

Net Electronic Charge as an Effective Electronic Descriptor for Oxygen Release and Transport Properties of SrFeO₃-Based Oxygen Sorbents

et al. 2021

View full text Add to dashboard Cite

Perovskite oxides, as oxygen sorbents, exhibit excellent potential in thermochemical redox applications such as chemical looping air separation (CLAS), resulting from their excellent redox properties and high tunability. The structural and compositional flexibility of perovskites, while making these mixed oxides highly versatile, also poses challenges for their design and optimization. Moreover, the elevated operating temperature and dynamic oxygen partial pressure swings during redox processes add additional complications for oxygen sorbent design. From a fundamental standpoint, finding simple yet effective descriptors for the effect of cation substitutions on oxygen sorbents’ redox and oxygen transport properties are of significant importance for rational optimization of perovskite-based oxygen sorbents. In the present study, a series of A/B-site-doped SrFeO3‑δ perovskites are investigated using density functional theory (DFT) + U simulations. From these simulations, an effective electronic structural descriptor, the net electronic charge (Δe) of oxygen anions, is extracted based on its excellent correlations with vacancy formation energy, experimentally derived oxygen capacity, and oxygen vacancy migration barrier. These findings provide an effective tool to correlate the oxygen sorbents’ redox performances with a simple yet physically meaningful descriptor for rational design and optimization of perovskites in the context of CLAS.

show abstract

Section: Introductionmentioning

confidence: 99%

Net Electronic Charge as an Effective Electronic Descriptor for Oxygen Release and Transport Properties of SrFeO₃-Based Oxygen Sorbents

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In general, a number of factors can affects the oxygen permeation rate through a membrane such as operating temperature, sweep gas flowrate and compositions and most importantly, the membrane properties itself such as membrane materials, form, morphology and thickness [1,11,12,[15][16][17][18]. Recently, LSCNi was investigated as a cathode materials for SOFC development [19] and oxygen sorbent [20]. It was found that better oxygen permeation can be achieved by substitution of Fe with Ni due to low polarization resistance.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Fabrication of lanthanum-based perovskites membranes on porous alumina hollow fibre (AHF) substrates for oxygen enrichment

Sihar

Othman

Alias

et al. 2019

Ceramics International

Self Cite

View full text Add to dashboard Cite

show abstract

Deposition of self-healing thin films by the sol–gel method: a review of layer-deposition mechanisms and activation of self-healing mechanisms

Dezfuli

Sabzi

2019

Appl. Phys. A

View full text Add to dashboard Cite

Sol-gel-derived perovskite-based sorbents for high-temperature air separation

Cited by 5 publications

References 43 publications

Net Electronic Charge as an Effective Electronic Descriptor for Oxygen Release and Transport Properties of SrFeO₃-Based Oxygen Sorbents

Net Electronic Charge as an Effective Electronic Descriptor for Oxygen Release and Transport Properties of SrFeO₃-Based Oxygen Sorbents

Fabrication of lanthanum-based perovskites membranes on porous alumina hollow fibre (AHF) substrates for oxygen enrichment

Deposition of self-healing thin films by the sol–gel method: a review of layer-deposition mechanisms and activation of self-healing mechanisms

Contact Info

Product

Resources

About

Sol-gel-derived perovskite-based sorbents for high-temperature air separation

Cited by 5 publications

References 43 publications

Net Electronic Charge as an Effective Electronic Descriptor for Oxygen Release and Transport Properties of SrFeO3-Based Oxygen Sorbents

Net Electronic Charge as an Effective Electronic Descriptor for Oxygen Release and Transport Properties of SrFeO3-Based Oxygen Sorbents

Fabrication of lanthanum-based perovskites membranes on porous alumina hollow fibre (AHF) substrates for oxygen enrichment

Deposition of self-healing thin films by the sol–gel method: a review of layer-deposition mechanisms and activation of self-healing mechanisms

Contact Info

Product

Resources

About

Net Electronic Charge as an Effective Electronic Descriptor for Oxygen Release and Transport Properties of SrFeO₃-Based Oxygen Sorbents

Net Electronic Charge as an Effective Electronic Descriptor for Oxygen Release and Transport Properties of SrFeO₃-Based Oxygen Sorbents