What is zirconium hydroxide?
1. Introduction
Zirconium hydroxide is an inorganic compound with the chemical formula Zr (OH) 4. It is composed of zirconium ions (Zr4+) and hydroxide ions (OH -). Zirconium hydroxide is a white solid that is soluble in acids but insoluble in water. It has many important applications, such as catalysts, ceramic materials, and biomedical fields. Cas: 14475-63-9;12688-15-2
2. Structure
The molecular formula of Zirconium hydroxide is Zr (OH) 4, which is composed of one zirconium ion (Zr4+) and four hydroxide ions (OH -). In the solid state, the structure of Zirconium hydroxide is formed by ionic bonds between zirconium ions and hydroxide ions. The positive charge of zirconium ions and the negative charge of hydroxide ions attract each other, forming a stable crystal structure.
3. Physical properties
Zirconium hydroxide is a white solid that resembles powder or particles in appearance. Its density is about 3.28 g/cm ³， The melting point is approximately 270 ° C. Zirconium hydroxideis almost insoluble in water at room temperature, but soluble in acids. Its solubility increases with the increase of temperature. Zirconium hydroxide has good thermal stability and can be used at high temperatures.
4. Chemical properties
Zirconium hydroxide is an alkaline substance that can react with acids to produce corresponding salts and water. For example, Zirconium hydroxide reacts with hydrochloric acid to produce zirconium chloride and water:
Zr (OH) 4+4HCl → ZrCl4+4H2O
Zirconium hydroxide can also react with other metal ions to form precipitates. For example, when a Zirconium hydroxide solution reacts with ammonium salts, a white Zirconium hydroxide precipitate is generated:
Zr (OH) 4+4NH4+→ Zr (OH) 4 · 4NH4
5. Application
5.1 Catalysts
Zirconium hydroxide has a wide range of applications in the field of catalysts. It can be used as a catalyst in fields such as petroleum processing, chemical synthesis, and environmental protection. Zirconium hydroxide catalysts have high activity and selectivity, which can promote the reaction and improve the purity of the product.
5.2 Ceramic Materials
Zirconium hydroxide is also widely used in the preparation of ceramic materials. Due to its high melting point and high temperature resistance, Zirconium hydroxide can be used to prepare high-temperature ceramic materials, such as refractory materials and thermal barrier coatings. In addition, Zirconium hydroxide can also improve the mechanical properties and wear resistance of ceramic materials.
5.3 Biomedical field
Zirconium hydroxide also has important applications in the biomedical field. It can be used to prepare artificial bones and dental materials, such as artificial joints and dental implants. Due to its excellent biocompatibility and biological activity, Zirconium hydroxide can bind well with human tissues, reducing patient pain and discomfort.
6. Security
Zirconium hydroxide is generally a relatively safe compound. However, due to its alkalinity, Zirconium hydroxide can cause irritation to the skin and eyes. Therefore, when using Zirconium hydroxide, appropriate protective measures should be taken, such as wearing gloves and goggles.
In addition, Zirconium hydroxide also has certain toxicity. When using and handling Zirconium hydroxide, it is important to avoid inhaling dust or solutions to prevent damage to the respiratory and digestive systems.
7. Summary
Zirconium hydroxide is an important inorganic compound with the chemical formula Zr (OH) 4. It has many important applications, such as catalysts, ceramic materials, and biomedical fields. Zirconium hydroxide has good physical and chemical properties and can be used in high temperature and acidic environments. However, when using and processing Zirconium hydroxide, attention should be paid to its alkalinity and toxicity to ensure safety. By gaining a deeper understanding of the properties and applications of Zirconium hydroxide, one can better utilize its advantages and contribute to the development of related fields.
8.Specification of zirconium hydroxide
| Test Item | Standard | Results |
| Appearance | White Crystal Powder | Conformed |
| ZrO2+HfO2 | 40-42% | 40.76% |
| Na2O | ≤0.01% | 0.005% |
| Fe2O3 | ≤0.002% | 0.0005% |
| SiO2 | ≤0.01% | 0.002% |
| TiO2 | ≤0.001% | 0.0003% |
| Cl | ≤0.02% | 0.01% |
| Conclusion | Comply with above standard | |
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