Zirconium(IV) hydroxide

Zirconium (IV) hydroxide, often called hydrous zirconia is an ill-defined material or family of materials variously described as ZrO2·nH2O and Zr(OH)4·nH2O. All are white solids with low solubility in water. These materials are widely employed in the preparation of solid acid catalysts.[2][3]

Zirconium(IV) hydroxide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.034.959
EC Number
  • 238-472-7
UNII
  • InChI=1S/4H2O.Zr/h4*1H2;/q;;;;+4/p-4 checkY
    Key: HAIMOVORXAUUQK-UHFFFAOYSA-J checkY
  • InChI=1/4H2O.Zr/h4*1H2;/q;;;;+4/p-4
    Key: HAIMOVORXAUUQK-XBHQNQODAM
  • [Zr+4].[OH-].[OH-].[OH-].[OH-]
Properties
Zr(OH)4
Molar mass 159.253 g/mol
Appearance white filter cake
Density 3.25 g/cm3, solid
Melting point 550 °C (1,022 °F; 823 K) decomposes
0.02 g/100 mL (20 °C)
Hazards
GHS labelling:[1]
GHS07: Exclamation mark
Warning
H315, H319, H335
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P332+P313, P337+P313, P362, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

These materials are generated by mild base hydrolysis of zirconium halides and nitrates. A typical precursor is zirconium oxychloride.[2]

References
  1. "Zirconium hydroxide". pubchem.ncbi.nlm.nih.gov.
  2. Chen, Fang Ren; Coudurier, Gisele; Joly, Jean Francois; Vedrine, Jacques C. (1993). "Superacid and catalytic properties of sulfated zirconia". Journal of Catalysis. 143 (2): 616–26. doi:10.1006/jcat.1993.1304.
  3. "Zirconium Hydroxide". Product Identification. ChemicalLAND21.com. Retrieved 2007-10-25.


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