The dimer mesityl oxide is preferably formed on ASA with low silica content which could stem from two effects: 1) mesityl oxide benefits from a higher number of LAS as observed by Panov and Fripiat and 2) a lack of BAS at low silica loadings which are required to promote the consecutive aromatization with another acetone molecule. This concludes to both LAS and BAS being beneficial for the formation of mesityl oxide and dimers, while BAS promote the consecutive formation of mesitylene.