Sintering of silicon carbide obtained by combustion synthesis

Amirkhanyan, Narine; Kirakosyan, H.; Zakaryan, Marieta K.; Zurnachyan, A. R.; Rodríguez, Miguel Á.; Abovyan, L. S.; Aydinyan, Sofiya

doi:10.1016/j.ceramint.2023.04.233

Cited by 5 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The combustion reaction is considered a relatively simple, effective, and low-cost technique, widely established in the literature as a procedure used for the synthesis of various types of oxides [15][16][17] with applications in the production of biodiesel [18]. The innovative aspect of this work is in the consolidation of MoO 3 catalysts obtained through the combustion reaction, offering a significant contribution to studies on the optimization of the biofuel production process.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Biodiesel Production Process Using MoO3 Catalysts and Residual Oil: A Comprehensive Experimental 23 Study

Silva,

Pereira,

Sales

et al. 2024

Molecules

View full text Add to dashboard Cite

The study aimed to utilize MoO3 catalysts, produced on a pilot scale via combustion reaction, to produce biodiesel from residual oil. Optimization of the process was conducted using a 23 experimental design. Structural characterization of the catalysts was performed through X-ray diffraction, fluorescence, Raman spectroscopy, and particle size distribution analyses. At the same time, thermal properties were examined via thermogravimetry and differential thermal analysis. Catalytic performance was assessed following process optimization. α-MoO3 exhibited a monophasic structure with orthorhombic phase, whereas α/h-MoO3 showed a biphasic structure. α-MoO3 had a larger crystallite size and higher crystallinity, with thermal stability observed up to certain temperatures. X-ray fluorescence confirmed molybdenum oxide predominance in the catalysts, with traces of iron oxide. Particle size distribution analyses revealed polymodal distributions attributed to structural differences. Both catalysts demonstrated activity under all conditions tested, with ester conversions ranging from 93% to 99%. The single-phase catalyst had a long life cycle and was reusable for six biodiesel production cycles. The experimental design proved to be predictive and significant, with the type of catalyst being the most influential variable. Optimal conditions included α-MoO3 catalyst, oil/alcohol ratio of 1/15, and a reaction time of 60 min, resulting in high biodiesel conversion rates and showcasing the viability of MoO3 catalysts in residual oil biodiesel production.

show abstract

Section: Introductionmentioning

confidence: 99%

Optimization of Biodiesel Production Process Using MoO3 Catalysts and Residual Oil: A Comprehensive Experimental 23 Study

Silva,

Pereira,

Sales

et al. 2024

Molecules

View full text Add to dashboard Cite

show abstract

“…On the other hand, a sintering process is also required in the preparation of silicon carbide ceramics. In fact, there are various sintering methods for silicon carbide ceramics [25], such as reaction sintering, unpressurized sintering, isostatic pressure sintering, and recrystallization sintering. As an important variety of modern silicon carbide, recrystallized silicon carbide has the advantages of excellent strength, good conductivity, high degree of corrosion resistance, and high temperature resistance and is widely used in semiconductors, aerospace, and other fields.…”

Section: Introductionmentioning

confidence: 99%

Influence of Silane Coupling Agent and Anionic Dispersant on the Dispersion Effect of Silicon Carbide Particles

Zheng,

Li,

Zhang

et al. 2024

Materials

View full text Add to dashboard Cite

Silicon carbide (SiC), as a widely used material, has great properties. To improve the flowability of ultrafine silicon carbide slurry, this study used sodium humate, tetramethylammonium hydroxide (TMAH), and N-(β-monoaminoethyl)-γ-aminopropyltrimethyl(ethoxysilane) (KH792) to modify the ultrafine silicon carbide powder produced by Qingzhou Micro Powder Company. The effects of different modifiers on improving the flowability of ultrafine silicon carbide slurry were investigated by means of viscosity tests, sedimentation experiments, and SEM observations. Their modification mechanisms were investigated by means of zeta potential tests, XPS tests, and so on. In this paper, the initial modification of SiC was carried out with KH792, followed by the secondary modification with anionic and cationic modifiers (tetramethylammonium hydroxide and sodium humate), and the optimal modification conditions were investigated by means of a viscosity test, which showed that the lowest viscosity of the modified SiC reached 0.076 Pa·s and that the absolute maximum value of the zeta potential increased from 47.5 at the time of no modification to 63.7 (maximum values) at the time of modification. This means it has an improved surface charge, which improves dispersion. The adsorption results of the modifier on the silicon carbide surface were also demonstrated by the XPS test results.

show abstract

Rapid and cost-effective fabrication of SiC from Si scrap through flash sintering

Shin,

Raju,

Hassan

et al. 2024

Journal of the European Ceramic Society

View full text Add to dashboard Cite

Sintering of silicon carbide obtained by combustion synthesis

Cited by 5 publications

References 19 publications

Optimization of Biodiesel Production Process Using MoO3 Catalysts and Residual Oil: A Comprehensive Experimental 23 Study

Optimization of Biodiesel Production Process Using MoO3 Catalysts and Residual Oil: A Comprehensive Experimental 23 Study

Influence of Silane Coupling Agent and Anionic Dispersant on the Dispersion Effect of Silicon Carbide Particles

Rapid and cost-effective fabrication of SiC from Si scrap through flash sintering

Contact Info

Product

Resources

About