Rice Husk Ash as a Raw Material to Produce Willemite Pigments

L.A. Vieira; Marilena Valadares Folgueras; M. Tomiyama; S.R. Prim

doi:10.4028/www.scientific.net/MSF.912.44

Paper Titles

Influence of Addition of CaO and SiO₂ in Microstructure of Hexaferrite Ba_XSr_1-XFe₁₂O₁₉
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Synthesis and Characterization of HMOR and Catalyst MoO₃/HMOR, NiO/HMOR and Co₂O₃/HMOR
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Preparation of Molecular Sieve Al-SBA-15 with Two Ratios Si/Al Catalyst for Use in the Transesterification Reaction of Soybean Oil
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Rice Husk Ash as a Raw Material to Produce Willemite Pigments
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Structural, Morphological and Textural Features of EDTA-Citrate-Synthesized BaPrO₃ Perovskite-Type Oxide
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Evaluation of Phyllite and Sand in the Heavy Clay Body Composition
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Study of the Addition Effect of Fe₂O₃ and Al₂O₃ Originated from Pectin Citrus in the Glassy Phase on the Microestructural Development and in the Mechanical Characteristics of the Triaxial Ceramics
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Evaluation of the Accelerated Degradation of Mortar in a Ceramic Coating Facade System
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HomeMaterials Science ForumMaterials Science Forum Vol. 912Rice Husk Ash as a Raw Material to Produce...

Rice Husk Ash as a Raw Material to Produce Willemite Pigments

Abstract:

This study focuses in the synthesis of ceramic pigments based on the crystal structure of willemite (Zn₂SiO₄). The willemite obtained from the combination of commercial zinc oxide and rice husk ash is produced in a conventional ceramic process without the use of mineralizer agent and with the addition of cobalt oxide or nickel oxide as the source of chromophore ions. The synthesis temperature used was 1200°C. The characterization of pigments involves the use of X-ray diffraction and scanning electron microscopy. The pigments applied in matte enamel and sintered at 1100°C or 1200°C developed color between blue and beige. The construction of absorbance curves showed the color development behavior of each pigment. The results showed the possibility of obtaining willemite, from rice husk ash and the color development efficiency of the material, besides showing the interference of chromophore ion (Ni and Co) in color development.

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Periodical:

Materials Science Forum (Volume 912)

Pages:

44-49

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.912.44

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Online since:

January 2018

Authors:

L.A. Vieira, Marilena Valadares Folgueras, M. Tomiyama, S.R. Prim

Keywords:

Cobalt, Nickel, Pigments, Rice Husk Ash, Willemite

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