Oil from coal and gas

Synthetic fuel can be made from coal, or from gas but the processes areexpensive and not usually used. There are many processes, see: ​http://en.wikipedia.org/wiki/Synthetic_fuel

The most normal processes are the  Fischer-Tropsch synthesis, and the Mobil process. See diag. They can make liquid fuel from any partially burned organic material.

A new process has been developed to convert the syn gas to  dimethylether (DME) as the preceding step to hydrocarbon. 

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