Syngas yield

Side reactions specific to one component play an important role in the reforming of a mixture. For example, aromatics are more prone to coking upon reforming, so their presence in a mixture can lower syngas yields over time due to catalyst deactivation. Also, the catalyst surface-component interactions may play an important role in the reforming of a mixture. For example, aromatics have an abundance of 71-electrons, so they may occupy active sites for a longer duration, due to 71-complexation between d-orbitals of the metal and 7i-elec-trons. Hence there will not be enough reactive sites available for the desired reaction to occur. 

Petrochemical applications of syngas require a ratio of hydrogen to carbon monoxide of either 1 1 or 2 1. Commercial processes for syngas yield ratios much higher therefore, separation technology, by-product credits and production techniques which can adjust the hydrogen to carbon monoxide ratio are important aspects of syngas production. 

Table 7 Current Density, Syngas Yields in Short Circuit Cells. 

Gasification wood chips Syngas yield 0.933 kg syngas/1 kg wood Source Process flowsheet... 

Correspondingly lower syngas yield and cold gas efficiency... 

---