is an organic substance with the chemical formula of (C5H8O2) 4 · Zr. It is a white crystal with a relative density of 1.415. The melting point is 194~195 degree , and decomposition begins at 125 degree . Slightly soluble in water, ethanol, ether and petroleum ether, soluble in pyridine, acetone, benzene and chlorination. catalyzer; Zirconium metal arrowhead, four - Diketone zirconium liquid crystal materials.
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C20H28O8Zr4- |
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486 |
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488 |
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m/z |
122 (100.0%), 123 (33.8%), 122 (33.3%), 122 (21.8%), 122 (21.6%), 123 (7.3%), 122 (7.2%), 123 (5.4%), 122 (4.7%), 122 (2.2%), 122 (1.6%), 123 (1.2%) |
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C, 49.26; H, 5.79; O, 26.25; Zr, 18.71 |
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Synthesis method: in industry, tellurium is extracted from the anode mud of electrolytic copper smelted by copper. The anode slime containing about 3% tellurium is dried and then sulfated at 250 degree , and then the selenium dioxide is volatilized at 700 degree , leaving tellurium in the roasting slag. Copper sulfate is leached with water and then leached with sodium hydroxide solution to obtain sodium tellurite solution. The leach solution is neutralized with sulfuric acid to form crude tellurium oxide precipitation. The oxide is precipitated twice, and then the aqueous solution is electrolyzed to obtain tellurium with 98% - 99% tellurium.
(Chinese name: zirconium acetylacetonate, CAS number: 17501-44-9) is an important organometallic compound with the chemical formula C ₂ ₀ H ₂ ₈ O ₈ Zr and a molecular weight of approximately 487.66. Its structure contains four acetylacetone ligands that coordinate with the central zirconium ion to form a stable tetrahedral structure. This compound has shown broad application prospects in materials science, catalytic chemistry, energy technology, and other fields due to its unique physical and chemical properties. The following are its main uses:
Zirconia nanoparticles with photocatalytic activity can be synthesized by the sol-gel method of zirconium acetylacetonate. These nanoparticles have a wide range of applications in fields such as photocatalysis, sensors, and biomedical research. Acetylacetone zirconium thin film can be used as a cathode buffer layer for polymer solar cells. Experiments have shown that its average energy conversion efficiency (PCE) is 8.75%, which is significantly improved compared to traditional Ca/Al cathode devices. Acetylacetone zirconium can be used to synthesize high kappa zirconia gate dielectrics for low-voltage operation of organic field-effect transistors, improving device performance.
Catalysts are substances that can accelerate the rate of chemical reactions without being consumed. In material preparation, the application of catalysts can significantly improve reaction efficiency, reduce reaction temperature and pressure, and minimize the generation of by-products. Acetylacetone zirconium plays an important role in catalyst preparation. It can serve as a catalyst for polymerization reactions, promoting the polymerization between monomers and improving the molecular weight and properties of polymers. In oxidation reactions, zirconium acetylacetonate can accelerate the reaction rate and improve the selectivity of oxidation products. Zirconium acetylacetonate acts as a catalyst in esterification reactions, promoting the esterification reaction between carboxylic acids and alcohols, and improving the yield and purity of esterification products. Zirconium acetylacetonate can be used as a catalyst to promote the copolymerization reaction of lactide with other monomers, and synthesize poly (propylene glycol) ternary copolymers with specific properties. Zirconium acetylacetonate can be used as an open-loop initiator to catalyze the synthesis of biodegradable polyacids, providing support for the development of environmentally friendly materials.
Zirconium acetylacetonate is often used as a crosslinking agent in coatings. Crosslinking is an important step in the curing process of coatings. Through cross-linking reactions, linear molecular chains in coatings can be interconnected to form a three-dimensional network structure, thereby improving the performance of coatings. Acetylacetone zirconium can react with resin and other components in coatings to promote crosslinking reactions. For example, in epoxy resin coatings, zirconium acetylacetonate can react with epoxy groups to form cross-linked structures between epoxy resin molecular chains, enhancing the hardness and chemical resistance of the coating. This cross-linking effect can also improve the adhesion and flexibility of the coating, enabling the coating to better adapt to different substrates and usage environments. The addition of zirconium acetylacetonate can significantly improve the hardness and wear resistance of the coating. During the drying and curing process of coatings, zirconium acetylacetonate can promote the tight arrangement of molecular structures in the coating, making it harder and more wear-resistant.
For example, in automotive coatings, adding zirconium acetylacetonate can improve the scratch resistance of the coating, making the car surface smoother and more durable.The presence of zirconium acetylacetonate can enhance the chemical resistance of coatings, enabling them to resist the corrosion of chemical substances such as acids, bases, and solvents. In industrial coatings, this characteristic is particularly important because various chemicals are often present in the industrial environment, and coatings need to have good chemical resistance to protect the substrate from corrosion. Acetylacetone zirconium can improve the heat resistance of coatings, enabling them to maintain stable performance even in high temperature environments. In some applications that require high-temperature use, such as aerospace, automotive engine coatings, etc., the application of zirconium acetylacetonate can ensure that the coating does not soften, deform or peel off at high temperatures, providing effective protection for the substrate.
can improve the adhesion of ink to printing substrates, enabling ink to better bond with substrates and improve the quality of printed products. At the same time, it can accelerate the drying process of ink, reduce the drying time of printed materials, and improve production efficiency. This is of great significance for some printing processes that require rapid drying, such as high-speed printing, digital printing, etc. The addition of zirconium acetylacetonate can enhance the wear resistance and chemical resistance of ink. During the printing process, ink is easily affected by friction and chemical substances, leading to a decrease in the quality of printed materials. By adding zirconium acetylacetonate, ink can form a tougher coating, improve its wear resistance, and reduce the wear of printed materials during use. Meanwhile, the enhancement of chemical resistance can enable ink to resist the erosion of various chemicals such as acids, alkalis, solvents, etc., ensuring the stability of printed materials in complex environments.
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