The effect of various reaction parameters on carbothermal reduction of kaolinite

Panda, P. K.; Mariappan, L.; Kannan, T. S.

doi:10.1016/s0272-8842(98)00060-1

Cited by 24 publications

(11 citation statements)

References 12 publications

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“…Kaolin decomposed to form Al 2 Si 2 O 7 at 550°-600°C, as indicated in Eq. (4), 8 but no Al 2 Si 2 O 7 was identified by XRD. Al 2 Si 2 O 7 is probably amorphous.…”

Section: (2) Synthesis From the Mixture Of Kaolin Aluminum And Carbonmentioning

confidence: 95%

Synthesis of Al₄SiC₄

Inoue

Yamaguchi

2003

Journal of the American Ceramic Society

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The conditions necessary for synthesizing Al4SiC4 from mixtures of aluminum, silicon, and carbon and kaolin, aluminum, and carbon, as starting materials, were examined in the present study. The standard Gibbs energy of formation for the thermodynamic reaction SiC(s) + Al4C3(s) = Al4SiC4(s) changed from positive to negative at 1106°C. SiC and Al4C3 formed as intermediate products when the mixture of aluminum, silicon, and carbon was heated in argon gas, and Al4SiC4 then formed by reaction of the SiC and Al4C3 at >1200°C. Al4C3, SiO2, Al2O3, SiC, and Al4O4C formed as intermediate products when the mixture of kaolin, aluminum, and carbon was heated under vacuum, and Al4SiC4 formed from a reaction of those intermediate products at >1600°C.

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“…Kaolin decomposed to form Al 2 Si 2 O 7 at 550°-600°C, as indicated in Eq. (4), 8 but no Al 2 Si 2 O 7 was identified by XRD. Al 2 Si 2 O 7 is probably amorphous.…”

Section: (2) Synthesis From the Mixture Of Kaolin Aluminum And Carbonmentioning

confidence: 95%

Synthesis of Al₄SiC₄

Inoue

Yamaguchi

2003

Journal of the American Ceramic Society

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“…In order to prevent the problems caused by mixing of SiC and Al 2 O 3 powders, composite powders can be synthesized by carbothermal reduction of a mixture of silica and alumina or of natural aluminosilicates like kaolinite [ 22 ], kyanite [ 23 ], and andalusite [ 24 ]. Suitable adjustment of reaction conditions (chemical composition of starting mixture or mineral, reaction temperature, source and partial pressure of C, dwell time at reaction temperature, or presence of impurities or catalysts) allows the control of the content and morphology of SiC fraction in the mixed powder.…”

Section: Preparation Of Nanocompositesmentioning

confidence: 99%

Alumina Matrix Composites with Non-Oxide Nanoparticle Addition and Enhanced Functionalities

Galusek

Galusková

2015

Nanomaterials

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The addition of SiC or TiC nanoparticles to polycrystalline alumina matrix has long been known as an efficient way of improving the mechanical properties of alumina-based ceramics, especially strength, creep, and wear resistance. Recently, new types of nano-additives, such as carbon nanotubes (CNT), carbon nanofibers (CNF), and graphene sheets have been studied in order not only to improve the mechanical properties, but also to prepare materials with added functionalities, such as thermal and electrical conductivity. This paper provides a concise review of several types of alumina-based nanocomposites, evaluating the efficiency of various preparation methods and additives in terms of their influence on the properties of composites.

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“…Calcium carbonates have a validated off‐line method of analysis4 and are distributed internationally as reference materials, but their use in the TCCFIRMS standardization has been avoided because of the incomplete yield of reaction 3. The usefulness of halide salt addition in the thermal and carbothermal chemical analysis of many O‐containing compounds is also widely known 5–7. Most recently, non‐halogenated and halogenated catalysis were tested for the continuous‐flow isotope analysis of oxygen from carbonates and silicates 8, 9.…”

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confidence: 99%

Continuous‐flow δ¹⁸O measurements: new approach to standardization, high‐temperature thermodynamic and sulfate analysis

Boschetti

Iacumin

2005

Rapid Comm Mass Spectrometry

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The continuous-flow method for the determination of the O-isotope composition of solid samples has significant advantages over off-line extraction methods, but the problem has arisen of the standardization of results that has only partially been resolved by the use of water standards. We propose a new approach to standardization that uses carbothermic reduction of calcium carbonate standards catalyzed by high-purity AgCl. Analytical accuracy, precision, variance homogeneity and long-term stability are proven. Preliminary data on the barium sulfate delta18O analyses are reported, with a closer look at the different results obtained by off-line and on-line methods on intercomparison standards NBS-127 and MSS3.

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The effect of various reaction parameters on carbothermal reduction of kaolinite

Cited by 24 publications

References 12 publications

Synthesis of Al₄SiC₄

Synthesis of Al₄SiC₄

Alumina Matrix Composites with Non-Oxide Nanoparticle Addition and Enhanced Functionalities

Continuous‐flow δ¹⁸O measurements: new approach to standardization, high‐temperature thermodynamic and sulfate analysis

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The effect of various reaction parameters on carbothermal reduction of kaolinite

Cited by 24 publications

References 12 publications

Synthesis of Al4SiC4

Synthesis of Al4SiC4

Alumina Matrix Composites with Non-Oxide Nanoparticle Addition and Enhanced Functionalities

Continuous‐flow δ18O measurements: new approach to standardization, high‐temperature thermodynamic and sulfate analysis

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Product

Resources

About

Synthesis of Al₄SiC₄

Synthesis of Al₄SiC₄

Continuous‐flow δ¹⁸O measurements: new approach to standardization, high‐temperature thermodynamic and sulfate analysis