Air is 78 per cent nitrogen and nearly all the rest is oxygen. When hydrogen is burned ... some of the hydrogen and nitrogen will react to form ammonia. Stage four The unreacted nitrogen and ...

“To achieve stable ammonia combustion, we would like to use high temperature and high oxygen conditions,” he says. “However, these conditions also increase NO x production.” But the IHI ...

In 1929 British biochemist John Haldane (1892-1964) put forth the theory that the early atmosphere of Earth contained no ... ammonia, and methane. With so much hydrogen around, free oxygen could ...