2.1.2. Synthesis Gas Purification and Use
Synthesis gas from the gasification of fossil fuels is contaminated by several gaseous compounds which would affect its further use in different ways. Sulfur, present as H2S or COS, is a poison for many catalysts that partly or completely inhibits their activity. CO2 can either directly take part in the chemical reaction or it can interfere by contributing to the formation of excess inert gas.