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Nanometer praseodymium-zirconium yellow material and preparation method thereof

A yellow and nano technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve problems such as harm to human health, difficulty in mass production, environmental pollution, etc., to achieve bright color, mild and easy-to-control reaction conditions, Low energy consumption effect

Inactive Publication Date: 2018-11-23
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, some toxic organic solvents are used in the preparation process, and the reaction environment is alkaline, which endangers human health and pollutes the environment, and is difficult to be used in mass production

Method used

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  • Nanometer praseodymium-zirconium yellow material and preparation method thereof
  • Nanometer praseodymium-zirconium yellow material and preparation method thereof

Examples

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Comparison scheme
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preparation example Construction

[0027] Preparation of praseodymium nitrate. Dissolve praseodymium oxide in nitric acid to prepare praseodymium nitrate solution.

[0028] Select certain soluble silicon sources and soluble zirconium sources to prepare aqueous solutions with certain concentrations respectively. The concentration of the silicon ion and zirconium ion aqueous solution may be 0.1mol / L-0.5mol / L. The soluble silicon source can be selected from sodium metasilicate or / and potassium silicate. The soluble zirconium source may be selected from zirconium nitrate, zirconyl nitrate, zirconium oxychloride or / and zirconium chloride and the like.

[0029] The praseodymium nitrate solution, the soluble silicon source aqueous solution and the soluble zirconium source aqueous solution are uniformly mixed to obtain a mixed solution. The preparation sequence of the mixed solution is preferably: add the praseodymium nitrate solution into the soluble silicon source aqueous solution (silicon ion solution), and then ...

Embodiment 1

[0036] (1) Weigh 1.61g zirconium oxychloride octahydrate, dissolve it in 50ml water, and stir to obtain a 0.1mol / L zirconium oxychloride aqueous solution; weigh 1.42g sodium metasilicate nonahydrate, dissolve it in 50ml water, and stir to prepare Obtain a 0.1mol / L sodium silicate solution; weigh 0.068g of praseodymium oxide, add concentrated nitric acid dropwise, and gently stir to obtain a clear praseodymium nitrate solution. Add the praseodymium nitrate solution into the sodium silicate aqueous solution, and then add the zirconium oxychloride aqueous solution into the above-mentioned two-water mixed solution under sufficient stirring to obtain a mixed solution. Slowly add sodium hydroxide solution dropwise to the mixed solution, adjust the pH to 6.7, and keep the pH constant for at least 15 minutes to obtain the precursor solution;

[0037] (2) Put the precursor solution in a hydrothermal kettle, and conduct a hydrothermal reaction at 220°C for 18 hours; then filter and wash...

Embodiment 2

[0039](1) Take by weighing 8.05g zirconium oxychloride octahydrate, be dissolved in 50ml water, stir to make 0.5mol / L zirconium oxychloride aqueous solution; Take by weighing 7.10g sodium metasilicate nonahydrate, be dissolved in 50ml water, stir to make Obtain a 0.5 mol / L sodium silicate solution; weigh 0.341 g of praseodymium oxide, add concentrated nitric acid dropwise, and gently stir to obtain a clear praseodymium nitrate solution. Add the praseodymium nitrate solution into the sodium silicate aqueous solution, and then add the zirconium oxychloride aqueous solution into the above-mentioned two-water mixed solution under sufficient stirring to obtain a mixed solution. Slowly add sodium hydroxide solution dropwise to the mixed solution, adjust the pH to 6.7, and keep the pH constant for at least 15 minutes to obtain the precursor solution;

[0040] (2) Put the precursor solution in a hydrothermal kettle, and conduct a hydrothermal reaction at 220°C for 18 hours; then filte...

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Abstract

The invention relates to a nanometer praseodymium-zirconium yellow material and a preparation method thereof. The method comprises the following steps of uniformly mixing praseodymium nitrate, a soluble silicon source water solution and a soluble zirconium source water solution to obtain a mixed solution; regulating the pH value of the obtained mixed solution to 6 to 8; performing hydrothermal reaction for 10 to 20 hours at 180 to 240 DEG C; then performing suction filtering and drying to obtain hydrothermal products; performing high-temperature treatment on the hydrothermal products at 800 to1200 DEG C for 1 to 4 hours; then performing grinding to obtain the nanometer praseodymium-zirconium yellow material. The nanometer praseodymium-zirconium yellow material obtained through preparationhas the advantages that the particle diameter is in a nanometer stage; the uniformity and stability are realized; the crystal form is regular; the color is fresh and bright; the application field iswide.

Description

technical field [0001] The invention relates to a ceramic color material, mainly a nano-scale praseodymium yellow material and a preparation method thereof. Background technique [0002] Ceramic pigments, also known as ceramic pigments, are a type of inorganic pigments. They usually refer to a type of coloring substance that can withstand high-temperature treatment and whose main color is inorganic compounds. It is an important material for ceramic coloring and surface decoration. High temperature stability and color rendering ability are the two basic bases for measuring the performance of ceramic pigments. [0003] Zirconium-based pigments are widely used in various ceramic decorative materials due to their excellent physical and chemical properties, pure color and strong tinting strength. Among them, praseodymium-doped zirconium silicate is an environmentally friendly, non-toxic, bright and cost-effective yellow pigment, and it has been receiving great attention because ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/20B82Y30/00C09C1/00
CPCB82Y30/00C01B33/20C01P2004/62C01P2004/64C01P2006/60C09C1/0009
Inventor 高彦峰张雯姚勇吉姜海青
Owner SHANGHAI UNIV
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