Petroleum refining and petrochemicals
Industrial Chemistry · Chemistry
Study notes
Why is petrol cheaper to make than diesel from the same crude? Think fractions. Step 1: Actually — crude yields fixed fractions; demand shifts, not chemistry. Step 2: Cracking converts heavy fractions to lighter (petrol) as needed. Step 3: Reforming boosts octane (branched/aromatics). Step 4: Refineries tune output — cracking and reforming reshape supply!