Essay on Use and Description of Titanium Dioxide

Essay on Use and Description of Titanium Dioxide

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Titanium metal (Ti) is the ninth most abundant element found in the Earth’s crust, being strong as steel but much less dense. Because of this, it is a very important alloying agent with many other metals including aluminium, iron and molybdenum. These alloys are used in aircraft as they are materials with low density that can resist to high temperatures. Titanium is also used to cover the hulls of ships and other structures exposed to water, as well as in desalinisation plants which convert sea water into fresh water [1]. However, the largest use of this metal is in the form of titanium (IV) oxide, which accounts for over 96% of titanium consumption worldwide. Because of its excellent physical properties, which are the lack of colour, high refractive index and chemical inertness, titanium dioxide is the principal inorganic synthetic pigment on the market with over 3,000,000 tonnes per annum produced accounting for 66% of the global production capacity of pigments as shown in table 1: [3]
Pigment Tonnes per annum Tonnes per annum (%)
Titanium dioxide (white) 3,170,000 66
Iron oxides (red) 720,000 15
Pigment blacks 530,000 11
Lithopone (white) 190,000 4
Chromate yellow 145,000 3
Others 45,000 1
Total 4,800,000 100

Table 1: Global production capacities for the major inorganic synthetic pigments.[2]
Because TiO2 is related to non-essential products, it was observed that the demand is fluctuating depending on the GDP (gross domestic product), as it can be seen in figure 8 :

Figure 8: Relationship between GDP and TiO2 demand.


At the beginning of the TiO2 industry, Europe and North America showed the most demand and the highest growth rates. However, in the past years, because the markets have fully grown,...


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..., next to town of Bankside.










Bibliography

1. http://www.rsc.org/periodic-table/element/22/titanium
2. ITU-2 Green Chemistry Course Documentation 11-12
3. Emerging Industries, An Investigation of the Market and Economic Factors Relevant to Establishing an Australian Titanium Metal Industry,
(http://www.isr.gov.au/industry/emerging/ISR_Titanium21mar01.pdf).
4. Donald V. Borst, Titanium Dioxide- An industry in Transition, Jocca Surface Coatings, 80, 2, p.60-65, 1997

5. http://upload.wikimedia.org/wikipedia/commons/5/5d/Rutile-unit-cell-3D-balls.png
6. http://upload.wikimedia.org/wikipedia/commons/4/49/Anatase-unit-cell-3D-balls.png
7. http://www.essentialchemicalindustry.org/chemicals/titanium-dioxide.html
8. EUR-Lex, Community Legislation in Force, Document 378L0176, (http://europa.eu.int/eur-lex/en/lif/dat/1978/en_38L016.html)



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