F331 - Module 2 - (DF) Developing Fuels - Emission exhaust


(l) describe and explain the origin of atmospheric pollutants including those from car exhausts and other sources: particulates, unburnt hydrocarbons, CO, CO2, NOx, SOx;

  • describe the environmental implications of these pollutants
  • discuss methods of reducing these pollutants and the decisions society has to make in using such methods

(u) explain what is meant by the octane number of a petrol in terms of the tendency of petrol towards auto-ignition which causes 'knocking' in a car engine, describing the effect of chain length and chain branching on the octane number;

(v) describe what happens in isomerisation, reforming and cracking reactions of hydrocarbons

explain how these processes improve the performance of hydrocarbons as fuels

(w) understand the work of chemists in improving fuels and in searching for and developing fuels for the future including use of oxygenates and the hydrogen economy;

(x) understand the benefits and risks associated with using fossil fuels and alternative fuels (biofuels, hydrogen, nuclear) and discuss the choices involved in making decisions about ensuring a sustainable energy supply.