Special Subjects (Industrial Chemistry)

Separation of smoke and mist

Redox reactions between metals and metal oxides (thermiteprocess)

Functional models of hand-held fire extinguishers

Sulphur trioxide - the sulphuric acid contact process

Salts of sulphuric acid - sulphates

Obtaining nitrogen oxides by burning air

Ammonia preparation from the elements (Haber-Bosch process)

Combustion of ammonia to produce nitrogen dioxide

Preparation of iron from oxidic ores (blast furnace process)

Explosion limits of a petrol-air mixture

Cracking of hydrocarbons

Tyndall effect in macromolecules

Properties of plastics (2): determination of the density of plastics

Step-growth polymerisation (2): production of nylon

Principle

The reaction of sebacoyl chloride with hexamethylenediamine forms Nylon 610^®. The two components are dissolved in two solvents of different density which do not mix with one another. For this reason, a reaction can take place only at the contact su ...

Polyaddition (2): formation of polyurethane

Principle

The reaction of dialcohols with diisocyanates forms polyurethane. This is an example of a polyaddition reaction. The reaction releases heat which causes a foaming agent (water) to foam up the plastic that is formed.