TY - JOUR
T1 - Highly Selective and Stable Production of Aromatics via High-Pressure Methanol Conversion
AU - Shoinkhorova, Tuiana
AU - Cordero-Lanzac, Tomás
AU - Ramirez, Adrian
AU - Chung, Sang-ho
AU - Dokania, Abhay
AU - Ruiz-Martinez, Javier
AU - Gascon, Jorge
N1 - KAUST Repository Item: Exported on 2021-03-08
Acknowledgements: Funding for this work was provided by King Abdullah University of Science and Technology (KAUST). The authors wish to acknowledge and thank Sandra Ramirez Cherbuy for the illustration of the graphical abstract.
PY - 2021/3/5
Y1 - 2021/3/5
N2 - In the current petrochemical market, the global demand for aromatics, especially benzene, toluene, and xylenes (BTXs), has increased sharply. The methanol-to-aromatic conversion (MTA) over ZSM-5 is among the most promising routes to satisfy this ever-growing demand. In this work, we show that highpressure operation during MTA leads to a large increase in aromatic selectivity while enhancing stability on-stream. Stable operation along with a very high selectivity to aromatics (up to 50%, with 20% BTXs) can be achieved on a commercial high-silica ZSM-5 (SiO2/Al2O3 = 280) at 400 °C, 30 bar total pressure, and WHSV = 8 h−1. The high partial pressure of primary olefins and
the promoted methanol-induced hydrogen-transfer pathway result in an exponential increase in aromatization, while the high partial pressure of steam generated via dehydration of methanol leads to in situ coke removal and, therefore, to a much slower deactivation of the zeolite
AB - In the current petrochemical market, the global demand for aromatics, especially benzene, toluene, and xylenes (BTXs), has increased sharply. The methanol-to-aromatic conversion (MTA) over ZSM-5 is among the most promising routes to satisfy this ever-growing demand. In this work, we show that highpressure operation during MTA leads to a large increase in aromatic selectivity while enhancing stability on-stream. Stable operation along with a very high selectivity to aromatics (up to 50%, with 20% BTXs) can be achieved on a commercial high-silica ZSM-5 (SiO2/Al2O3 = 280) at 400 °C, 30 bar total pressure, and WHSV = 8 h−1. The high partial pressure of primary olefins and
the promoted methanol-induced hydrogen-transfer pathway result in an exponential increase in aromatization, while the high partial pressure of steam generated via dehydration of methanol leads to in situ coke removal and, therefore, to a much slower deactivation of the zeolite
UR - http://hdl.handle.net/10754/667907
UR - https://pubs.acs.org/doi/10.1021/acscatal.0c05133
U2 - 10.1021/acscatal.0c05133
DO - 10.1021/acscatal.0c05133
M3 - Article
SN - 2155-5435
SP - 3602
EP - 3613
JO - ACS Catalysis
JF - ACS Catalysis
ER -