Zirconium oxide colloids

Putman, B., van der Meeren, P., and Thierens, D., Reduced bovine serum albumin adsorption by prephosphatation of powdered zirconium oxide. Colloids Surf. A, 121, 81, 1997. 

Stankovic, J.B. et al.. Sorption of alkaline-earth cations on amorphous zirconium oxide. Colloids Surf., 46, 283, 1990. 

Milonjic, S.K., Ilic, Z.E., and Kopccni, M.M., Sorption of alkali cations at the zirconium oxide/aqueous electrolyte interface. Colloids Surf., 6, 167, 1983. 

Colloids, for example, oxides with no ionic charge, are removed by ion exchange processes. Zirconium oxides tend toward sal formation, and in this colloidal form are difficult to remove from solution. 

For ceramic materials that are not extremely hard (e.g., stabilized zirconium oxide or multiphase materials), surface relief can be created within a few minutes by means of final polishing with colloidal silica on a chemicaUy resistant, short-napped fiber cloth. Because removal is dependent on the grain orientation and the type of phase, it is possible to distinguish between grains of a single phase and between different phases during microscopic examination. Application of the DIC method makes it possible to use even poorly defined reUef to display microstructure under the optical microscope. A brief final polishing step with very fine alumina (0.05 pm) will help reveal the spinel phase in aluminum oxide materials, for example. 

C. Colloidal Titanic Acid, Colloidal Zirconium Oxide and Colloidal... 

Seredych M, Bandosz TJ, Adsorption of ammonia on graphite oxide / aluminum polycation and graphite oxide/zirconium polyoxycations composites,/ Colloid Interface Sci. 2008, 324 25-35. 

Garg, A. and Matijevic, E. (1988 a). Preparation and properties of coated imi-form colloidal particles III.Zirconium hydrous oxide on hematite. J. Coll. Interface Sci. 126 243-250. 

Chardymskaya, E.Y. et al.. Determination of parameters of the electric double layer of zirconium(lV) oxide in solutions of 1 1 charged electrolytes. Colloid J. USSR, 52, 467, 1990. 

Sun, Y. and Spencer, H.G., Effects of calcium ions on the streaming potentials of zirconium hydrous oxide-polyacrylate foimed-in-place membranes, J. Colloid Interf. Sci., 126, 361, 1988. 

The aim of this contribution is to present data on the preparation of catalysts containing as embedding species a large family of eolloids such as colloids of ruthenium, platinum, or palladium-gold alloys and triflate derivatives such as lanthanum and silver triflate or tert-butyldimethylsilyltrifluoromethanesulfonate (BMSTM). Silica, zirconia and tantalum oxides were used as carrier. All these preparations considered the polymeric sol-gel route using as starting materials silicon, zirconium or tantalum alcoxides. 

If mixed-metal alkoxide precursors can be prepared and their reactivity can be controlled, ordered macroporous mixed metal oxides can be produced by a sol-gel method using a colloidal crystal template. Alkoxides of Ti and Zr with other metals are easily prepared by mixing titanium alkoxide and zirconium alkoxide with alkoxides of other metals or metal salts, and the formed mixed metal alkoxides can infiltrate the voids of templates. Therefore, production of mixed metal oxides with Ti and Zr is straightforward. 

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