Enhancing the quartz-clay-feldspar system by nano-Al2O3 addition for electrical insulators: From laboratory to prototype scale

Contreras, José Enciso; Taha‐Tijerina, Jaime; López-Perales, J.F.; Muñoz, Fernando Banda; Díaz-Tato, Leonel; Rodríguez, Edén

doi:10.1016/j.matchemphys.2021.124389

Cited by 5 publications

(2 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Aluminum oxide (Alumina) is a promising candidate for many applications, it is used in catalysis [202,203], insulators [204], microelectronics [205][206][207], sensors [208], and remediation processes [209,210]. Alumina has unique acid/base characteristics, good mechanical strength, chemical inertness towards oxidation and reduction, excellent electrical insulation, sufficient thermal stability, high surface area, and a high melting point [211,212].…”

Section: Aluminum Oxidementioning

confidence: 99%

Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives

et al. 2023

View full text Add to dashboard Cite

For applications involving water cleanup, metal oxide nanoparticles are exceptionally successful. They are useful for the adsorption and photocatalytic destruction of organic pollutants due to their distinctive qualities, which include their wide surface/volume area, high number of active sites, porous structure, stability, recovery, and low toxicity. Metal oxide nanomaterials have drawn a lot of attention from researchers in the past ten years because of their various production pathways, simplicity in surface modification, abundance, and inexpensive cost. A wide range of metal oxides, such as iron oxides, MgO, TiO2, ZnO, WO3, CuO, Cu2O, metal oxides composites, and graphene–metal oxides composites, with variable structural, crystalline, and morphological features, are reviewed, emphasizing the recent development, challenges, and opportunities for adsorptive removal and photocatalytic degradation of organic pollutants such as dyes, pesticides, phenolic compounds, and so on. In-depth study of the photocatalytic mechanism of metal oxides, their composites, and photocatalytically important characteristics is also covered in this paper. Metal oxides are particularly effective photocatalysts for the degradation of organic pollutants due to their high photodegradation efficiency, economically sound methods for producing photo-catalytic materials, and precise band-gap engineering. Due to their detrimental effects on human health, pesticides—one of the highly hazardous organic pollutants—play a significant part in environmental contamination. Depending on where they come from and who they are targeting, they are categorized in various ways. Researchers focusing on metal oxides and their composites for the adsorptive and photocatalytic degradation of pesticides would find the review to be a beneficial resource. Detailed information on many pesticides, difficulties associated with pesticides, environmental concentration, and the necessity of degradation has been presented.

show abstract

Section: Aluminum Oxidementioning

confidence: 99%

Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The most significant development in the history of ceramics to date is the production of vitrified and translucent porcelain in ancient China [ 1 ]. The three-component system of clay–feldspar–quartz is widely used in the ceramic industry [ 2 , 3 , 4 , 5 ]. The main components of the sintered product are quartz (11 × 10 −6 K −1 ), mullite (5.7 × 10 −6 K −1 ), and feldspar glass (4.8 × 10 −6 K −1 ).…”

Section: Introductionmentioning

confidence: 99%

Preparation of Anorthite/Mullite In Situ and Phase Transformation in Porcelain

Lin

Zhong

et al. 2023

Materials

View full text Add to dashboard Cite

A high sintering temperature is required to acquire excellent performance in the production of porcelain but results in high fuel consumption. To prepare the porcelain with outstanding performance at a lower temperature, a self-produced additive containing calcium (CaK) was added into a three-component system of kaolinite–feldspar–quartz. XRD and SEM were used to characterize the samples. The toughening mechanism and Gibbs free energy were investigated. After introducing the CaK, the bending strength of the porcelain fired at 1513 K increased from 56.32 ± 0.65 MPa to 95.31 ± 0.63 MPa, which was 21.83% higher than that of the porcelain without CaK at an optimal firing temperature of 1603 K. The main crystal phase of the sample comprised mullite and quartz in the raw materials at 1453~1603 K. The anorthite was observed at 1453 K and interlocked with needle-shaped mullite at 1513 K in the porcelain after adding CaK, which resulted in the higher bending strength. Quantitative analysis indicated that the amount of anorthite decreased at 1513 K and disappeared at 1543 K; the amount of mullite increased with temperature. The Gibbs free energy of the reaction (CaO•Al2O3•2SiO2 + 2(Al2O3•2SiO2) → 3Al2O3•2SiO2 + CaO + 4SiO2) at high temperature was negative, which suggested that the formation of mullite (3Al2O3•2SiO2) from anorthite (CaO•Al2O3•2SiO2) was possible. These findings implied that the addition of CaK contributed to the appropriate phase composition and microstructure, and the excellent performance of the porcelain at a lower temperature. In addition, the transformation between anorthite and mullite was possible in the special raw material system. The results are of interest in producing anorthite/mullite ceramics at reduced sintering temperatures and the conversion between anorthite and mullite.

show abstract

Microstructural and mechanical characterization of high strength porcelain insulators for power transmission and distribution applications

Yousaf

Iqbal

Hussain

et al. 2022

Ceramics International

View full text Add to dashboard Cite

Enhancing the quartz-clay-feldspar system by nano-Al2O3 addition for electrical insulators: From laboratory to prototype scale

Cited by 5 publications

References 70 publications

Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives

Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives

Preparation of Anorthite/Mullite In Situ and Phase Transformation in Porcelain

Microstructural and mechanical characterization of high strength porcelain insulators for power transmission and distribution applications

Contact Info

Product

Resources

About