Cerium Oxide Polishing Powder | Image Resource : 5.imimg.com
Cerium oxide is a yellow colored powder, which does not dissolve in water but can absorb a little carbon dioxide and moisture from the atmosphere. It dissolves easily in mineral acids. The main application of this compound is to polish glass.
Cerium oxide polishing powder, also known as ceria, can be used in fuel cells. It is so because the oxygen content of this compound has high conductivity. The compound is available in un-doped and doped form and both forms can be used in electronic devices.
The doped ceria can also be used as an electrolyte especially in SFOC or Specific Fuel Oil Consumption. If gadolinium or samarium is mixed with ceria, ionic conductivity is increased and a better electrolyte is formed.
There is anode in a cell and the electrolyte can form oxygen vacancies. There are two forms of cerium oxide, which are cerium IV oxide and cerium III oxide. When the current is passed in anode, cerium IV oxide is reduced to cerium II oxide and it results in the increase of electronic conductivity. The changes from cerium IV oxide to cerium III oxide results in compensating the formation of oxygen vacancies.
The polishing powder cerium oxide can be used in automotive applications as a catalytic converter. Another property of this compound is that it can give out oxygen but does not decompose. In an exhaust combustion engine, ceria can either absorb or release oxygen.
When it is combined with other catalysts it coverts carbon monoxide to carbon dioxide. This is a great catalyst and is available at an affordable cost. It can be used to complete the incomplete combustion of various harmful products by oxidizing them. The catalyst acts rapidly in various reactions and completes them successfully.
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