products from oil
- Created by: Ellie cooper
- Created on: 02-12-12 17:26
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- Products from oil
- Cracking hydrocarbons
- Hydrocarbon molecules can be broken down by heatimg them with steam to a very high temp or by passing their vapours over a hot catalyst
- Cracking produces alkenes and alkanes
- Alkenes are unsaturated hydrocarbons
- Alkenes tun bromine water from orange to colourless
- Making polymers from alkenes
- Plastic are made of polymers
- Polymers are large molecules made when many small moelcules (monomers) join together
- Alkenes can be used to make polymers such as poly(ethene) and poly(propane)
- New and useful polymers
- New polymers are being developed all the time
- Polymers are designed to have properties that make them specially suited for certain uses
- We are now recycling more plastics and finding new uses for them
- Plastic waste
- Non-biodegradable plastics casue unsightly rubbish, can harm wildlife and take up space in landfill sites
- Biodegradable plastics are decomposed by the action of microorganisms in soil
- Making plastics with starch granules in their structure helps microoganisms break down a plastic
- We can make biodegradable plastics from plant material such as cornstarch
- Ethanol
- Ethanol can be made by fermenting sugar using enzymes in yeast
- Ethanol can also be made by hydration of ethene with steam in the presence of a catalyst
- Usimg ethene to make ethanol needs non-renewable crude oil whereas fermentation uses renewable plant material
- Cracking hydrocarbons
- Alkenes are unsaturated hydrocarbons
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