Enhancement of propene oligomerization and aromatization by proximate protons in zeolites; FTIR study of the reaction pathway in ZSM-5

The enhanced effect of strongly acidic proximate protons (distance 5.0–5.5 Å) in ZSM-5 was presented on complex propene oligomerization up to the aromatization and development of individual carbenium ion intermediates in the zeolite pores.