It is either energetically expensive or dirty. Reforming carelessly is what Germany did during WW2 to make synthetic rubber and oil from brown coal. The result

It is either energetically expensive or dirty. Reforming carelessly is what Germany did during WW2 to make synthetic rubber and oil from brown coal. The result is the Black Triangle due to sulphite pollution. https://en.m.wikipedia.org/wiki/Black_Triangle_(region) https://en.m.wikipedia.org/wiki/Black_Triangle_(region)