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The Use of Ionic Liquids as “Green Solvents”

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Vishal Khindri

on 25 March 2011

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Transcript of The Use of Ionic Liquids as “Green Solvents”

Green Solvents
and
Ionic Liquids "Green solvents" emphasize the goal to minimize the environmental impact resulting from the use of solvents in chemical production Ionic Liquids
Is a salt in which the ions are poorly coordinated How do "green solvents" and ionic liquids relate?
Ionic liquids are a type of "green solvent" Ionic Liquids
Compose of 2 components (anion and cation)
Liquid at room temperature Characteristics of Ionic Liquids
Poor conductors of electricity
Have low vapour pressure
Low combustability
Good thermal stability Grade 12 Connection
Ionic liquids involve the several key terms and process that we have knowledge on
They include ions (cations and anions), bonds (Van der Waal forces), melting and boiling points
Ionic liquids also require us to know how to find the temperature of molecules and require us to know to read and understand complex chemical equations Applications of Ionic Liquids
Purification of gases (air purification)
Removing metal ions (ionic liquids remove metal ions from water)
Biological application (enzymes are stable in ionic liquids)
Nuclear waste (ionizing radiation does not effect ionic liquids, meaning its could be used to treat high level nuclear waste) Benefits of Ionic Liquids
Low toxity compared to other solvents
No measurable vapure pressure (reduces risk associated with traditional solvents)
When replacing water as electrolytes in batteries, ionic liquids increase the battery life
Enhance finish, appearance and drying properties in paints, as ionic liquids act as dispersing agent
Ionic liquids help in storing gas becuase of their low vapure pressure and its stability at high temperatures Grade 12 connection
The big connection of ionic liquids to the grade 12 atomic structure and properties of matter unit is our understanding of ions.
In the atomic structure and properties of matter unit we learned about bonding in lquids and ionic bonding characteristics. These are key to understand ionic liquids
Ionic solids are made up of many ions and many short-lived ion pairs. the bonds that are in the ionic liquids are stronger than most Van der Waal forces found in liquids Disadvantages/Risks of Ionic Liquids
Poor biodegradability
Some ionic liquids are toxic to micro organisms
Are very toxic (aquatic)
Are very combustible (require handle with special care) Overall Assessment of Benefits and Risks
Though there are a few risks to the use of the ionic liquids, the benefits do make up for it.
Ionic liquids, wherever used, make they world a much safer and cleaner place to live
Though it is combustible, ionic liquids are very innovated and useful, when handled with care
Along with ionic liquids, microreactors are another great "green solvent" Work of Cites
1.Adams, D.J. (n.d.). Ionic liquids. Retrieved from http://www.organic-chemistry.org/topics/ionic-liquids.shtm

2.Green chemistry. (n.d.). Retrieved from http://en.wikipedia.org/wiki/Green_chemistry

3.Ionic liquid. (n.d.). Retrieved from http://en.wikipedia.org/wiki/Ionic_liquid

4.Johnson, K. (n.d.). What's an ionic liquid?. Retrieved from http://www.electrochem.org/dl/interface/spr/spr07/spr07_p38.pdf The End
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