Preparation and characterization of porous cordierite for potential use in cellular ceramics
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Marta Valášková
und
Gražyna Martynková
Abstract
Cordierite porous ceramics Z, X, and K were prepared using three mixtures of clay minerals: Z from kaolinite, talc, and aluminum hydroxide, X from kaolinite, talc, vermiculite, and aluminum hydroxide, and K from kaolinite, talc, and magnesium oxide. Ceramics were different in porosity, specific surface area, cordierite polymorphs, and secondary crystalline phases. Vermiculite influenced textural architecture of calcined cordierite ceramics X and predestinated crystallization of the high-temperature hexagonal α-cordierite with secondary minerals enstatite, spinel and corundum. Ceramics Z contained low-temperature orthorhombic β-cordierite, enstatite, and corundum, K was diphase of β-cordierite and forsterite. Total pore area (TPA) and specific surface area (SSA) of X, in spite of the higher porosity and the pore size distribution in the range of 300–1000 nm, were smaller in comparison with TPA and SSA of Z. Ceramics K retained high porosity, two maxima at 300–1000 nm and 50–200 nm in the pores size distribution, and the highest TPA and SSA compared to those observed in ceramics Z and X.
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© 2009 Institute of Chemistry, Slovak Academy of Sciences
Artikel in diesem Heft
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Artikel in diesem Heft
- GC-MS analyses of flower ether extracts of Prunus domestica L. and Prunus padus L. (Rosaceae)
- A novel kinetic-spectrophotometric method for determination of nitrites in water
- Characterization of recombinant antibodies for detection of TNT and its derivatives
- Improvements in the selection of real components forming a substitute mixture for petroleum fractions
- Chemical evaluation of seeded fruit biomass of oil pumpkin (Cucurbita pepo L. var. Styriaca)
- Application of 31P NMR for added polyphosphate determination in pork meat
- Estimation of composition, coordination model, and stability constant of some metal/phosphate complexes using spectral and potentiometric measurements
- Synthesis, characterization, and anti-tumor activities of some transition metal(II) complexes with podophyllic acid hydrazide
- Artificial neural network prediction of steric hindrance parameter of polymers
- Immobilization of porphyrins in poly(hydroxymethylsiloxane)
- Preparation and characterization of porous cordierite for potential use in cellular ceramics
- Characterization of NiFe2O4 nanoparticles synthesized by various methods
- QSAR analysis of 1,3-diaryl-2-propen-1-ones and their indole analogs for designing potent antibacterial agents
- QSAR study of 2,4-disubstituted phenoxyacetic acid derivatives as a CRTh2 receptor antagonists
- Comparison of isothermal and non-isothermal chemiluminescence and differential scanning calorimetry experiments with benzoyl peroxide
- Wettability of plasma-polymerized vinyltriethoxysilane film
- A spectrofluorimetric method for the determination of acitretin in pharmaceuticals
- Fatty acid profile of Trichosanthes kirilowii Maxim. seed oil
- Determination of the enthalpy of fusion of K3TaO2F4 and KTaF6
