Chemistry:Zirconium(IV) hydroxide

From HandWiki
Zirconium(IV) hydroxide
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 238-472-7
UNII
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 pictograms GHS07: Harmful
GHS Signal word Warning
H315, H319, H335
P261, P264, P271, P280, P302+352, P304+340, P305+351+338, P312, P332+313, P337+313, P362, P403+233, 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

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

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

References

  1. "Zirconium hydroxide" (in en). https://pubchem.ncbi.nlm.nih.gov/compound/84465#section=Safety-and-Hazards. 
  2. 2.0 2.1 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. http://chemicalland21.com/industrialchem/inorganic/ZIRCONIUM%20HYDROXIDE.htm. 

External links