Cerium (III) Acetate Sesquihydrate

Cerium (III) Acetate Sesquihydrate is water-soluble white powder material. This material is also called Cerous Acetate Sesquihydrate.  Since it is water-soluble, it is a valuable precursor.  It decomposes to Cerium(IV) Oxide (ceria, CeO2) upon heating above 540° Celsius, so it is used to synthesize Cerium Oxide materials.  For example, it is used to make cerium-based anti-corrosion metal coatings, and Cerium Oxide abrasives for precision polishing.  It can readily cycle between the 3+ and 4+ oxidation states, making it suitable as a redox-active catalyst.

A well-known use for fine ceria powders is as a polishing abrasive.  A patent by the Anji Microelectronics Technology in Shanghai, China describes using a water-soluble Cerium (III) salt such as Cerium (III) Acetate to prepare quality Cerium Oxide for this purpose.

Cerous Acetate is particularly suitable for use in sol-gel syntheses to prepare ceria materials, since it is water-soluble.  Sol-gel processes are not the only synthesis methods which use Cerium (III) Acetate.  However, they can be used to prepare materials for various applications.  For example, Researchers have synthesized ceria nanopowders using Cerium (III) Acetate, nitrate, and acetylacetonate, all suitable for preparing Cerium (III) Oxide. The University of Paul Sabatier also used Cerium (III) Acetate in sol-gel processes to create alumina-based coatings for stainless steel, enhancing its catalytic activity. Similarly, Beihang University researchers developed anti-corrosion coatings using Cerium (III) Acetate as a dopant, finding that an optimal concentration of 0.01 M improved resistance to saltwater exposure, while higher concentrations decreased corrosion resistance.

1. Arii, T., Taguchi, T., Kishi, A., Ogawa, M., & Sawada, Y. (2002). Thermal decomposition of cerium(III) acetate studied with sample-controlled thermogravimetric–mass spectrometry (SCTG—MS). Journal of the European Ceramic Society, 22(13), 2283–2289. https://doi.org/10.1016/S0955-2219(02)00019-5
2. Spherical cerium carbonate and synthesis method of cerium oxide (CN113120940A). (2019). https://patents.google.com/patent/CN113120940A/en
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4. Truyen, D., Courty, M., Alphonse, P., & Ansart, F. (2006). Catalytic coatings on stainless steel prepared by sol–gel route. Thin Solid Films, 495(1–2), 257–261. https://doi.org/10.1016/J.TSF.2005.08.200
5. Fu, C., Liu, Y., Yu, M., Liu, J., & Li, S. (2015). Effect of Cerium Acetate Doping on Corrosion Behavior of Sol-Gel Coatings on 2A12 Aluminum Alloy. International Journal of Electrochemical Science, 10(3), 2014–2025. https://doi.org/10.1016/S1452-3981(23)04824-1
6. Janoš, P., Ederer, J., Pilařová, V., Henych, J., Tolasz, J., Milde, D., & Opletal, T. (2016). Chemical mechanical glass polishing with cerium oxide: Effect of selected physico-chemical characteristics on polishing efficiency. Wear, 362–363, 114–120. https://doi.org/10.1016/J.WEAR.2016.05.020