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Resources and Green Chemistry…read more

Slide 2

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Greenhouse Effect
Caused by absorption of IR by C=O, C-H and O-H
bonds- bonds vibrate more and molecules gain
Kinetic Energy which increases the temperature of
the gases
They can also transfer the kinetic energy to other
molecules in the atmosphere by collision, so the
whole atmosphere gets warmer. These gases are
called greenhouse gases!
Depends on the concentration of the gases and its
ability to absorb infrared radiation.
Affected by how long the gas remains in the
atmosphere…read more

Slide 3

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Carbon Capture Storage
CO2 can be liquefied and injected into rocks
beneath the oceans
CO2 can be reacted with metal oxides to form
Statoil, in Norway, has 13m tonnes of CO2 has
been extracted directly from the Sleipner gas
field since 1996 and buried it in undersea
reservoirs.…read more

Slide 4

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Ozone Layer
Clear link between radical reactions in the
stratosphere and the reaction of halogens with
Formation of ozone:
O2 O + O
O2 + O· O3
Ozone is in equilibrium: O3 O2 + O…read more

Slide 5

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Radical Substitution
Chlorine radicals attack and damage the
ozone layer
Cl2 2Cl·
Cl· + O3 ClO· O2
ClO +O Cl· + O2
Cl· + Cl· Cl2…read more

Slide 6

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Catalytic Converters reduce levels of pollutants
If NO is present, it is caused by:
Unburnt hydrocarbons, carbon monoxide or nitrogen
Catalytic converters are only effective at HIGH
temperatures so cannot operate as effectively during
short journeys.
Convert harmful gases into harmless ones:
2NO(g) +2CO2(g) N2(g) +2CO2(g)
2NO2(g) +4CO(g) N2(g) +4CO2(g)
Catalytic Converters
Adsorption of CO and NO onto the catalyst surface
Bonds weaken
Bonds break…read more

Slide 7

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Thank you so much!

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