Sentences with phrase «larger hydrocarbon molecules»

It is known that larger hydrocarbon molecules like ethane and propane can also form hydrates, although longer molecules (butanes, pentanes) can not fit into the water cage structure and tend to destabilise the formation of hydrates.

Mango believes he has now found the missing ingredient: transition metals such as nickel and vanadium, which catalyse the breakdown of large hydrocarbon molecules into methane.

The geologist started to investigate the idea three years ago, and last year produced gas containing a greater proportion of methane by heating a mixture of large hydrocarbon molecules, hydrogen and carbon - rich rocks to 190 °C for several days.

Not exact matches

Some of those large molecules are like small sheets of graphite with hydrogen attached to them: we call these polycyclic aromatic hydrocarbons and they can be found in terrestrial counterparts like mothballs, for example.

There is also evidence for much larger molecules such as polycyclic aromatic hydrocarbons, which resemble the soot from automobile emission.