Ein Geheimnis des chinesischen Porzellans

Weiss, A.

doi:10.1002/ange.19630751604

Cited by 34 publications

(10 citation statements)

References 11 publications

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“…The intercalation of kaolinites-i.e., the separation of kaolinite layers by reactive guest molecules such as urea, formamide, dimethyl sulfoxide, and potassium acetate-has been studied by numerous authors [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38]. One of the earliest practical applications of the urea intercalation of kaolinite was during the Sung period in China (production of thin-walled (egg-shelled) porcelain) [23,24].…”

Section: Introductionmentioning

confidence: 99%

Kaolinite–urea complexes obtained by mechanochemical and aqueous suspension techniques—A comparative study

Makó

Kristóf

Horváth

et al. 2009

Journal of Colloid and Interface Science

112

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Section: Introductionmentioning

confidence: 99%

Kaolinite–urea complexes obtained by mechanochemical and aqueous suspension techniques—A comparative study

Makó

Kristóf

Horváth

et al. 2009

Journal of Colloid and Interface Science

112

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“…Intercalation of organic compounds promotes delamination of kaolinite particles and can improve the mechanical stability of porcelain. Kaolin modified by intercalation of urea was used in China (mainly in the Sung period, 960 -1280) in the production of very thin porcelain (egg-shell porcelain) [39].…”

Section: Intracrystalline Reactionsmentioning

confidence: 99%

Silicates

Lagaly¹,

Tufar²,

Minihan³

et al. 2000

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Structural Chemistry of Silicates 1.1. Structural Classification 1.2. Oligo‐ and Cyclosilicates 1.3. Polysilicates 1.4. Phyllosilicates 1.4.1. Monophyllosilicates 1.4.2. Diphyllosilicates 1.4.3. Alkali Silicates 1.4.4. Crystalline Silicic Acids 1.4.5. Clay Minerals 1.4.6. Intracrystalline Reactions 1.5. Tectosilicates 2. Natural Silicates 2.1. Feldspar 2.1.1. Structure and Composition 2.1.2. Characterization of Individual Feldspars 2.1.3. Production 2.1.4. Properties 2.1.5. Mineral Deposits and their Extraction 2.1.6. Processing and Quality Requirements 2.1.7. Uses and Economic Aspects 2.2. Nepheline and Related Compounds 2.3. Leucite 2.4. Olivine 2.5. Andalusite 2.6. Kyanite 2.7. Sillimanite 2.8. Mullite 2.9. Vermiculite 2.10. Perlite 2.11. Pumice 2.12. Basalt 2.13. Wollastonite 2.14. Toxicology 3. Alkali Silicates 3.1. Introduction 3.2. Raw Materials 3.3. Amorphous Anhydrous Alkali Silicates (Solid or Lump Glasses) 3.4. Silicate Solutions 3.5. Hydrated Water‐Soluble Silicates 3.6. Crystalline Solids 3.7. Uses and Applications 3.8. Economic Aspects 3.9. Storage, Safety, Labelling and Transportation 3.10. Analysis

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“…As for the nonionic substances, kaolinite adsorbs urea, formamide, and hydrazine through hydrogen bonding of the -NH 2 group of *) Dedicated to Professor Dr. Dr. h. c. Armin Weiss on the occasion of his 60th birthday. GL 327 these substrates with the -SiO group on the kaolinite surface [1,2]. The terminal -CH2-CH2-OH group of n-alkyl polyglycol ether is also attached to the silicate surface of the clay in the same manner [3,4].…”

Section: Introductionmentioning

confidence: 99%

Effect of polyvinylpyrrolidone and sodium dodecyl sulphate on the dispersity and fluidity of concentrated kaolinite suspension

Shimabayashi

Okuda

Yagiu

et al. 1987

Colloid & Polymer Sci

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Flow curves for the concentrated suspension of kaolinite (20 g/30 ml-medium) were obtained in the presence of polyvinylpyrrolidone (PVP) and sodium dodecyl sulphate (SDS) by means of a Couette-type rotary viscometer. The flow curves were Newtonian or non-Newtonian, depending on the concentration of PVP and SDS added. From these curves, the plastic viscosity (r/vL) and Bingham yield value (F0) were obtained. The relative viscosity (Gel) of r/PL with respect to the medium viscosity (r/0) were calculated and the contour lines for Fo and for 17rel obtained as a function of the concentration of SDS and PVP added. The feature of these contour lines was qualitatively similar to that for the mean diameter (din) of the secondary particles in a dilute suspension of kaolinite. It was concluded that both the increase in drain the dilute suspension and the increase in r/to1 and F 0 in the concentrated suspension were brought about by the interpartide bridging effect of PVP. The increase in r/re1 was due to the formation of bulky flow units of large void volume. The increase in F 0 reflected the growth of gel structure caused by the bridging effect. It was shown that PVP behaved as a flocculating agent at lower concentrations, but behaved as a dispersing agent at higher concentrations, while SDS at any concentration behaved as a dispersing agent for kaolinite suspension.

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Ein Geheimnis des chinesischen Porzellans

Abstract: Das Geheimnis des alten chinesischen Porzellans ist dieGiekhlickern werden die Cazi -1onen weifgehend durch Na -Ionen ersetzt [I 91 : CaIKaoliniil: i NalCO, ; : 2 NalKoolinit] -f CaCO(wie bei naturlichem Kaolin) zwischen 500 und 550 "C (Abb. 6). Bei der HzO-Abspaltung sind zwei Zerset-

Cited by 34 publications

References 11 publications

Kaolinite–urea complexes obtained by mechanochemical and aqueous suspension techniques—A comparative study

Kaolinite–urea complexes obtained by mechanochemical and aqueous suspension techniques—A comparative study

Silicates

Effect of polyvinylpyrrolidone and sodium dodecyl sulphate on the dispersity and fluidity of concentrated kaolinite suspension

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