CHEM-The Manufacturing of Ethanol
Chemistry, Manufacturing of Ethanol,Fermentation Process - IGCSE Chemistry
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3.9-Describe the manufacture of ethanol by bassing ethene and steam over a phosphoric acid catalyst at a temperature of about 300°C and a pressure of about 60-70 atm
3.10-Describe the manufacture of ethanol by the fermentation of sugars, for example glucose, at a temperature of about 30°C
3.11-Evaluate the factors relevant to the choice of method used in the manufacture of ethanol, for example the relative availability of sugar and crude oil
3.9- The Hydration of Ethene
C2H4 + H2O ⇒ C2H5OH
*Reaction takes place under high temperature and pressure with the presence of a catalyst
Procedure: Ethene is heated with steam in the presence of phosphoric acid (catalyst) at the temperature of about 300°C and a pressure of about 60-70 atm.
3.10- Fermentation of Glucose
C6H12O6 ⇒ C2H5OH + CO2
Process: During fermentation, sugar glucose is extracted from plant materials. It is then converted into ethanol and carbon dioxide at the temperature of 30°C and under the presence of yeast (natural catalyst).
3.11-Evaluating the Pros and Cons of the Two Methods
Hydration of Ethene
Pros and Cons
Fermentation of Glucose
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