Preparation of La&lt;sub&gt;0.7&lt;/sub&gt;Sr&lt;sub&gt;0.3&lt;/sub&gt;Co&lt;sub&gt;0.2&lt;/sub&gt;Fe&lt;sub&gt;0.8&lt;/sub&gt;O&lt;sub&gt;3-δ &lt;/sub&gt;(LSCF 7328) by Combination of Mechanochemical and Solid State Reaction

Nurherdiana, Silvana Dwi; Sholichah, Nikmatin; Iqbal, Rendy Muhamad; Sahasrikirana, Mutya Sandei; Utomo, Wahyu Prasetyo; Akhlus, Syafsir; Nurlina, .; Fansuri, Hamzah

doi:10.4028/www.scientific.net/kem.744.399

Cited by 16 publications

(10 citation statements)

References 10 publications

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“…In this study, the synthesized perovskite oxide of LSCF powder was prepared using a combination of the mechanochemical and solid-state method as promoted by Nurherdiana et al (Nurherdiana et al, 2017). Firstly, the precursors based on metal oxide and carbonate i.e., La 2 O 3 , Co 3 O 4 , Fe 2 O 3 and Sr 2 CO 3 were supplied from Merck with pa 99.99%.…”

Section: Methodsmentioning

confidence: 99%

Effect of Dope Composition and Additive Agent on the Properties of La0.6Sr04Co0.2Fe0.8O3-? Asymmetric Flat Membranes

Nurherdiana¹,

Habib

Utomo

et al. 2020

Nusantara Science and Technology Proceedings

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In this study, the La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF 6428) asymmetric flat membrane was successfully fabricated using a based-phase inversion technique. The effect of different dope composition and molecular weight of polyethylene glycol (PEG) as a pore-forming agent were investigated to identify the membrane properties in term of uniformly pore configuration and the mechanical strength. The result showed that the addition of dimethyl sulfoxide (DMSO) as the solvent in varied compositions exhibits different morphology and the most uniform finger-like pores with a diameter of 22 μm were formed using 5.0 ml DMSO. Based on the uniformity of the pores, 5.0 ml DMSO was further used to study the effect of PEG addition. A highly uniform porous configuration with a pore diameter of 17 μm, less dense layer thickness, the high mechanical strength of 507.2 Hv, and good thermal expansion behavior was achieved when 0.39% PEG 8000 was added. Such PEG 8000 is promoted additive to adjust the LSCF membrane porous configuration parameter to improve oxygen permeation and catalytic performance on partial oxidation of methane.

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Section: Methodsmentioning

confidence: 99%

Effect of Dope Composition and Additive Agent on the Properties of La0.6Sr04Co0.2Fe0.8O3-? Asymmetric Flat Membranes

Nurherdiana¹,

Habib

Utomo

et al. 2020

Nusantara Science and Technology Proceedings

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“…It is worth mentioning that the low coverage of CuO particles on LSCF enhances the oxygen reduction reaction kinetics [10]. Another proposed idea is to combine different methods for the purpose of proper quality achievement such as Hamzah Fansuri et al work in which they have mixed solid state and mechanochemical routes to attain the ne structured powder with acceptable particle size in the optimum time [11]. Alireza babaei et al declared that the rigorous washing of the co precipitation yielded precipitates enhanced the purity of the calcined powder [12].The aim of the present study is to acquire the ne and homogenous powder using the co-precipitation method and to investigate how dysprosium oxide in uence the quality of the obtained powder.…”

Section: They Observed That There Was No Reaction Between Cao and Lscmentioning

confidence: 99%

A study on synthesis and characterization of Dy-dopedLa0.6Sr0.4Co0.2Fe0.8O3-δvia co precipitation method

Mohammadi¹,

Khakpour²,

Maghsoudipour³

et al. 2020

Preprint

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The perovskite Lanthanum Strontium Cobalt Ferrite (LSCF) is investigated as the cathode material used in intermediate temperature solid oxide fuel cells (IT-SOFCs). In the present study, La0.6-xDyxSr0.4Co0.2Fe0.8O3-δ(x= 0, 0.3, 0.6) was synthesized through co precipitation method. The obtained precipitate was calcined at500, 700,900and 1000°С. Phase characterization of synthesized LSCF and LDySCF powder before and after heat treatment at 700°Сwas carried out by X-ray diffraction (XRD) analysis. XRD patterns revealed that the perovskite phase was obtained at 700 °С in all calcined samples. Chemical bond study to investigate synthesis process was done using the Fourier transform infrared spectroscopy technique. Thermalanalysis of DTA and TG has been utilized to investigate how the calcination temperature affects the peroveskite phase formation. According to the STA results, the perovskite phase formation started at 551°Сafterwarditcompleted at 700°С.The density values of synthesized powders were 6.10, 6.11 and 6.37g.cm-3for the undoped and doped samples calcined at 700°С. Powder morphology was studied by Field emission scanning electron microscopy. (FE-SEM) micrographs showed the spherical shaped particles with the average particle size of 24-131nm.

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“…al. [14]. Before starting the synthesis, all reactants were dried in an oven at 105 °C for 1 h. After drying, the materials were left to cool to room temperature inside a desicator.…”

Section: Synthesis Of Lscf 6428mentioning

confidence: 99%

EFFECT OF THE SINTERING PROCESS ON THE MORPHOLOGY AND MECHANICAL PROPERTIES OF La0.6Sr0.4Co0.2Fe0.8O3-δ ASYMMETRIC FLAT MEMBRANES PREPARED BY THE PHASE INVERSION METHOD

Nurherdiana¹

2019

Ceramics - Silikaty

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The goal of this study was to understand the effect of sintering temperature and duration on the morphology and mechanical properties of the La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ (LSCF) asymmetric flat membrane. The LSCF was prepared using the solid-state method and flat asymmetric membranes were prepared from LSCF powder using polyethersulfone (PESf) as the binder, dimethyl sulfoxide (DMSO) as the solvent and demineralized water as the coagulant (non-solvent). The membranes were sintered at 950, 1100, and 1250 °C for 4 and 8 h to examine the effect of sintering temperature on the morphology, porosity, hardness and thermal expansion properties of the resulting membranes. Analysis of the results showed a slight difference in membrane density when employing a sintering duration of 4 and 8 h at the same temperature. Whilst sintering temperature was observed to significantly affect the morphology and mechanical properties of the asymmetric membrane. SEM images showed that all membranes TTes retained their asymmetric structure with finger-like pores in their porous layer. Increasing the sintering temperature produced greater membrane density, where sintering at 1250 °C produced the strongest membrane with the greatest density and hardness (412.36 Hv). The thermal expansion of the membranes was also measured by TMA, which demonstrated a low thermal expansion coefficient associated with the denser membranes.

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Preparation of La<sub>0.7</sub>Sr<sub>0.3</sub>Co<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3-δ </sub>(LSCF 7328) by Combination of Mechanochemical and Solid State Reaction

Cited by 16 publications

References 10 publications

Effect of Dope Composition and Additive Agent on the Properties of La0.6Sr04Co0.2Fe0.8O3-? Asymmetric Flat Membranes

Effect of Dope Composition and Additive Agent on the Properties of La0.6Sr04Co0.2Fe0.8O3-? Asymmetric Flat Membranes

A study on synthesis and characterization of Dy-dopedLa0.6Sr0.4Co0.2Fe0.8O3-δvia co precipitation method

EFFECT OF THE SINTERING PROCESS ON THE MORPHOLOGY AND MECHANICAL PROPERTIES OF La0.6Sr0.4Co0.2Fe0.8O3-δ ASYMMETRIC FLAT MEMBRANES PREPARED BY THE PHASE INVERSION METHOD

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