Effect of fuel type on the microstructure and magnetic properties of solution combusted Fe3O4 powders

Fathi, Hamidreza; Masoudpanah, S.M.; Alamolhoda, S.; Parnianfar, H.

doi:10.1016/j.ceramint.2017.03.017

Cited by 62 publications

(18 citation statements)

References 32 publications

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“…3 (c) for the sample fabricated by using glycine as an organic additive. Fathi et al [40], reported that the simultaneous process of particle formation and the evolution of high quantity of exhaust gases assisted the separation of particles and generated large combustion pores in the sample fabricated by using glycine. In the case of using urea as an organic additive ( Fig.…”

Section: Fesem Analysismentioning

confidence: 99%

“…Due to the evolution of large amount of gases like CO 2 , H 2 O, N 2 , CO during the combustion process, the as-combusted powders have the foamy and porous structure [39][40][41]. The physicochemical characteristic of the as-combusted products such as surface area, porous structure, agglomeration and particle size distribution is controlled by the volume of exhausted combustion gases and amount of released heat, which is determined by the type of fuel, heating method and fuel to oxidant ratio [42][43][44][45].…”

Section: Introductionmentioning

confidence: 99%

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WITHDRAWN: Fabrication of Nimo Nanostructured Catalyst via Ultrasonic-Assisted Combustion Method Used in High Efficiency Thiophene Hydrodesulfurization: Influence of Organic Compound Type

Hamidi¹,

Khoshbin²,

Karimzadeh³

2020

Preprint

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Alumina supported NiMo nanocatalysts were synthesized through ultrasonic-assisted combustion method with various organic additives, including citric acid, ethylene glycol, glycine and urea using in hydrodesulfurization of thiophene at atmospheric pressure. The samples were characterized by XRD, TGA, FESEM, EDX, BET-BJH and TPR analyses. The results indicated that the type of organic compound has a noticeable effect on phase structure, surface morphology and reducibility potential as a consequence of different amount of heat and gaseous products released during combustion reaction. Our method showed that a relatively homogeneous distribution of the active material over the support can be achieved. Using citric acid as an organic additive, led to synthesis of nanocatalyst in which more than 90% of particles are less than 70 nm. The sample synthesized by citric acid exhibited the highest activity in hydrodesulfurization reaction due to its significant properties such as high surface area, considerable surface hole and weakened metal-support interaction compared with other organic additives. In addition, activity assessment of the prepared catalyst by ethylene glycol and glycine demonstrated that 100% abatement of thiophene can be achieved at 105 °C and 30 min.

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Section: Fesem Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Fabrication of Nimo Nanostructured Catalyst via Ultrasonic-Assisted Combustion Method Used in High Efficiency Thiophene Hydrodesulfurization: Influence of Organic Compound Type

Hamidi¹,

Khoshbin²,

Karimzadeh³

2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Simultaneously, PVDF decomposed and formed a carbon matrix. With prolonged heating, the Fe/Ni-based oxides that were produced during the early stage were reduced by H 2 to the corresponding metals [23,24]. The reaction of intermetallic FeNi 3 can be simply described as follows [25]: Fe + 3Ni→FeNi 3 .…”

Section: Characterizationsmentioning

confidence: 99%

Ultrafine FeNi3 Nanocrystals Embedded in 3D Honeycomb-Like Carbon Matrix for High-Performance Microwave Absorption

Han

Zhang

et al. 2020

Nanomaterials

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The reasonable design of magnetic carbon-based composites is of great significance to improving the microwave absorption (MA) performance of the absorber. In this work, ultrafine FeNi3 nanocrystals (5–7 nm) embedded in a 3D honeycomb-like carbon matrix (FeNi3@C) were synthesized via a facile strategy that included a drying and carbonization process. Because of the soft magnetic property of the FeNi3 nanocrystals and their unique 3D honeycomb-like structure, the FeNi3@C composites exhibit excellent MA abilities. When the filler loading ratio of FeNi3@C/paraffin composites is only 30 wt%, the maximum reflection loss (RL) value is −40.6 dB at 10.04 GHz. Meanwhile, an ultra-wide absorption frequency bandwidth of 13.0 GHz (5.0–18.0 GHz over −10 dB) can be obtained in the thickness range of 2.0–4.5 mm, and this means that the absorber can consume 90% of the incident waves. It benefits from the dual loss components, multiple polarizations, and multiple reflections for improving MA performances of FeNi3@C composites. These observations suggest that the 3D honeycomb-like FeNi3@C composites have broad application prospects in exploring new MA materials that have a wide frequency bandwidth and strong absorption.

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“…The initial solution self-ignites by preheating it to a moderate temperature which leads to the formation of ne solid powders. 35 The as-combusted material has a porous structure which is designed by the liberation of gaseous by-products like CO 2 , H 2 O, N 2 , CO during the process. 36 Initial heating in the solution combustion reaction can be applied using a normal oven or irradiating waves such as microwaves.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication, characterization and catalytic activity of a NiMo/Al₂O₃ nanocatalyst via a solution combustion method used in a low temperature hydrodesulfurization process: the effect of fuel to oxidant ratio

2020

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Effect of fuel type on the microstructure and magnetic properties of solution combusted Fe3O4 powders

Cited by 62 publications

References 32 publications

WITHDRAWN: Fabrication of Nimo Nanostructured Catalyst via Ultrasonic-Assisted Combustion Method Used in High Efficiency Thiophene Hydrodesulfurization: Influence of Organic Compound Type

WITHDRAWN: Fabrication of Nimo Nanostructured Catalyst via Ultrasonic-Assisted Combustion Method Used in High Efficiency Thiophene Hydrodesulfurization: Influence of Organic Compound Type

Ultrafine FeNi3 Nanocrystals Embedded in 3D Honeycomb-Like Carbon Matrix for High-Performance Microwave Absorption

Facile fabrication, characterization and catalytic activity of a NiMo/Al₂O₃ nanocatalyst via a solution combustion method used in a low temperature hydrodesulfurization process: the effect of fuel to oxidant ratio

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Effect of fuel type on the microstructure and magnetic properties of solution combusted Fe3O4 powders

Cited by 62 publications

References 32 publications

WITHDRAWN: Fabrication of Nimo Nanostructured Catalyst via Ultrasonic-Assisted Combustion Method Used in High Efficiency Thiophene Hydrodesulfurization: Influence of Organic Compound Type

WITHDRAWN: Fabrication of Nimo Nanostructured Catalyst via Ultrasonic-Assisted Combustion Method Used in High Efficiency Thiophene Hydrodesulfurization: Influence of Organic Compound Type

Ultrafine FeNi3 Nanocrystals Embedded in 3D Honeycomb-Like Carbon Matrix for High-Performance Microwave Absorption

Facile fabrication, characterization and catalytic activity of a NiMo/Al2O3 nanocatalyst via a solution combustion method used in a low temperature hydrodesulfurization process: the effect of fuel to oxidant ratio

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Facile fabrication, characterization and catalytic activity of a NiMo/Al₂O₃ nanocatalyst via a solution combustion method used in a low temperature hydrodesulfurization process: the effect of fuel to oxidant ratio