Highly Selective and Stable Production of Aromatics via High-Pressure Methanol Conversion

In the current petrochemical market, global demand for aromatics, especially benzene, toluene, and xylenes (BTXs), has increased sharply. The methanol-to-aromatic conversion (MTA) over ZSM-5 is among most promising routes to satisfy this ever-growing demand. work, we show that high-pressure operation during MTA leads a large increase in aromatic selectivity while enhancing stability on-stream. Stable along with very high aromatics (up 50%, 20% BTXs) can be achieved on commercial high-silica (SiO2/Al2O3 = 280) at 400 °C, 30 bar total pressure, WHSV 8 h–1. partial pressure of primary olefins promoted methanol-induced hydrogen-transfer pathway result an exponential aromatization, steam generated via dehydration methanol situ coke removal and, therefore, much slower deactivation zeolite.