One widely accepted mechanism used in this process is based on the formation of a carbene and includes a 1,3 hydride shift, originally proposed by Maitlis.
An early theory of the mechanism of this process using a cyclopropylidene intermediate was disproven by Hoel when allenes formed instead of the desired product. An important side reaction to this process is the Boudouard Reaction, and the catalyst used in this process is poisoned by hydrogen sulfide. One widely accepted mechanism used in this process is based on the formation of a carbene and includes a 1,3 hydride shift, originally proposed by Maitlis. The ratio of its input compounds can be controlled using the water-gas shift reaction, and this process typically uses an iron or cobalt-based catalyst. An important center for its use is the Sasol plant in South Africa, and the distribution of its products can be modeled with the Anderson-Schulz-Flory distribution. For 10 points, name this reaction which uses carbon monoxide and hydrogen to produce hydrocarbons. 
An early theory of the mechanism of this process using a cyclopropylidene intermediate was disproven by Hoel when allenes formed instead of the desired product.
{Fischer}-{Tropsch} Process