13762-26-0

Usage

Uses

Used in Chemical Industry:
Zirconium dichloride is used as a catalyst in the chemical industry for various chemical reactions. Its ability to facilitate and enhance the rate of reactions makes it a valuable component in the synthesis of numerous compounds.
Used in Ceramic Industry:
In the ceramic industry, zirconium dichloride is utilized as a precursor for the production of zirconium-containing ceramics. These ceramics are known for their high strength, toughness, and resistance to thermal shock, making them ideal for various applications, such as in electronics and aerospace components.
Used in Nuclear Industry:
Zirconium dichloride is employed in the nuclear industry as a source material for the production of zirconium-based alloys. These alloys are widely used as cladding materials for nuclear fuel rods due to their excellent corrosion resistance, low neutron absorption, and high mechanical strength.
Used in Refractory Industry:
In the refractory industry, zirconium dichloride is used as a raw material for the manufacture of zirconium silicate-based refractory materials. These materials exhibit high thermal stability, low thermal conductivity, and excellent resistance to chemical attack, making them suitable for use in high-temperature applications, such as in furnace linings and kilns.
Used in Surface Treatment:
Zirconium dichloride is also used in surface treatment processes, where it helps to improve the adhesion and corrosion resistance of coatings on various substrates. Its ability to form a stable bond with the surface of materials makes it an essential component in the production of durable and long-lasting coatings.

Upstream product

• 56-23-5 tetrachloromethane 
• 10241-03-9 zirconium trichloride 
• 7440-67-7 zirconium 
• 10026-11-6 zirconium(IV) chloride 
• 109-72-8 n-butyllithium 

Downstream Products

• 219868-13-0 bis(diphenylmethyl)(cyclopentadienyl)zirconium dichloride 

Relevant academic research and scientific papers

Electrodeposition of Zr and electrochemical formation of Mg-Zr alloys from the eutectic LiCl-KCl

To investigate the electrodeposition mechanism of Zr(IV), the electrochemistry of a LiCl-KCl-K2ZrF6 melt at molybdenum and tungsten electrodes was studied at the temperature between 773 K and 973 K. Transient eletrochemical techniques, such as cyclic volatmmetry and chronopotentiometry were used. The results showed that Zr(IV) was reduced to Zr metal by a two-step mechanism corresponding to the Zr(IV)/Zr(II) and Zr(II)/Zr transitions. The intermediate product was identified as ZrCl2 by X-ray diffraction. At a liquid magnesium electrode, Mg-Zr alloy was obtained by potentiostatic electrolysis, and the samples were characterized by scanning electron microscopy and energy dispersive X-ray detector. The zirconium concentration in samples was about 0.8 mass% determined by an inductively coupled plasma atomic emission spectrometer.

New syntheses of ansa-metallocenes or unbridged substituted metallocenes by the respective reductive dimerization of fulvenes with Group 4 metal divalent halides or with Group 4 metal dichloride dihydrides

Two unprecedented syntheses of Group 4 metallocenes from 6-substituted fulvenes have been discovered and developed into high-yielding processes. In the first route the di-n-butylmetal dichlorides of Ti, Zr and Hf are generated in toluene suspensions of LiCl at -78°C from the metal tetrachlorides and 2 equiv. of n-butyllithium. Bringing the Bun2MCl2 to 25°C and then heating at reflux for several hours gave complete conversion to slurries of MCl2 (M = Ti, Zr, Hf). Heating such slurries of MCl2 with 2 equiv. of 6-substituted or 6,6-disubstituted fulvenes gave high yields of ansa-metallocenes or substituted ethylene-bis(cyclopentadienyl)metallocene dichlorides (fulvenes: 6,6-dimethyl-, 6-phenyl-, 6-(1-naphthyl)-, 6-(9-anthryl)-). For 6-substituted fulvenes, both racemic- and meso-1,2-disubstituted ethylene-ansa-metallocene dichlorides are expected to form, but with M = Zr (or Ti), the actual racemic- to meso-ansa-metallocene dichloride ratios observed were: phenyl, 50:50; 1-naphthyl, 83:17; 9-anthryl, 100:0. Apparently for steric reasons 6,6-diphenylfulvene underwent no ansa-metallocene dichloride formation with ZrCl2 but rather produced bis(diphenylmethyl(cyclopentadienyl))zirconium dichloride. The second route to novel metallocenes involves generating Bun2MCl2 at -78°C in toluene slurry, as in the foregoing method, but then adding 2 equiv. of the 6-substituted or 6,6-disubstituted fulvene immediately thereafter at -78°C. Except with Bun2TiCl2, warming the reaction mixture to 25°C and then further heating at 65°C cause a smooth bis-hydrometallation by transfer to occur, giving good to very good yields of bis(substituted cyclopentadienyl)metal dichlorides (M = Zn, Hf). The instability of Bun2TiCl2, even at -78°C, rapidly led to a mixture of TiCl2 and Bun2TiCl2and hence to a mixture of ansa-titanocene dichlorides and unbridged, bis(substituted cyclopentadienyl) titanocene dichlorides. With a detailed study of the attainment and the stereochemistry of the formation of ansa-bridged complexes or metallocenes with acetophenone, benzylideneaniline and 6-arylfulvenes, a mechanistic model is developed involving either a three-membered metallocycle formed from MCl 2 or an open-face sandwich complex of the fulvene and MCl2. Such intermediates offer a rational steric explanation for the observed stereochemistry of ansa-bridge C-C bond formation. Finally, in comparative polymerizations of ethylene by such metallocenes, cocatalyzed by MAO, the superior catalytic activity of ansa-metallocenes in the order, Ti > Zr > Hf and of ansa-metallocenes over unbridged substituted metallocenes is attributed to the hyperconjugative stabilization afforded by the ansa σ C-C bond to the metallocenium cation at the active olefin-polymerization site.