Catalytic boiling-point distribution

Figure 1. Boiling point distribution of products from catalytic cracking...

Catalytic aromatisation of aliphatic hydrocarbons was first described by researchers at Mobil.2s In this process, termed M-2 forming , alkanes from ethane to high boiling point naphthalenes can be aromatised. The most effective catalyst for aromatisation was found to be the medium pore HZSM-5.26 Large pore zeolite and amorphous silica-alumina with broad pore size distributions gave only low yields of aromatics due to rapid coke formation. 

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