Chemistry

From Ethene and Steam

• 300°C
• 60-70atm
• Phosphoric Acid

• fast
• cheap labour
• non-renewable
• Pure

Fermentation

• 30°C

• slower
• renewable
• Impure

Dehydration

• Aluminium Oxide

Cracking

• 600°C - 700°C
• Silica and Alumina

Haber Process

• 450°C
• 200atm
• Iron

The contact Process

• 450°C
• 2 atm
• Vanadium (V) Oxide, V₂O₅