The pressure's off

 作者:葛衲     |      日期:2019-03-07 01:05:19
Ammonia is crucial for making synthetic fibres, fertilisers and dyes. But producing it eats up vast amounts of energy—amazingly around 1 per cent of the world’s energy production. A new catalyst discovered at the Ruhr University in Bochum, Germany, could make the process far more efficient. Ammonia is usually made by mixing nitrogen and hydrogen with an iron catalyst and heating the mixture to around 600 °C at a pressure of nearly 500 atmospheres. The new catalyst is a compound of barium, ruthenium and magnesium oxide and produces the same amount of ammonia at half the pressure,