fossil fuel derived from other hydrocarbon sources

A Syngas, or synthesis gas, is a gas mixture that is mainly used for synthesis. In the broad sense of the term, this can be any synthesis, such as the synthesis of Nitrogen, Hydrogen, or Ammonia. In the narrow sense of the word, only gas mixtures are covered, where the main component are carbon monoxide, and hydrogen.

Wood gas, a type of syngas, burning

Common uses of such gases are: