|
|
|
|
|
|
by rmcginnis
2606 days ago
|
|
|
Some of the companies that do upgrading include Vertimass, Gevo, Swedish Biofuels, for example, and there are some methods that are not under patent protection that anyone can use. Basically a catalyst that dehydrates the alcohols and oligomerizes them into longer carbon chains. No other products than a combustible fuel. |
|
|