TY - JOUR ID - 1786 TI - Dual-templated synthesis of Si-rich [B]-ZSM-5 for high selective light olefins production from methanol JO - Polyolefins Journal JA - POJ LA - en SN - 2322-2212 AU - Beyraghi, Salman AU - Rostamizadeh, Mohammad AU - Alizadeh, Reza AD - Faculty of Chemical Engineering, Sahand University of Technology, Sahand New Town, Tabriz, Iran, P.O. Box: 51335-1996 Y1 - 2021 PY - 2021 VL - 8 IS - 2 SP - 93 EP - 103 KW - Methanol to olefin KW - ZSM-5 KW - dual template KW - ethanol KW - catalyst DO - 10.22063/poj.2021.2852.1176 N2 - Methanol dehydration is a high potential route for the production of light olefins (C2-C4). In this study, hierarchical Si-rich [B]-ZSM-5 catalysts (Si/Al= 200) were prepared through one-pot hydrothermal synthesis, including boron as a promoter and ethanol as a low-cost secondary template. N2 adsorptiondesorption, XRD, FE-SEM, and FT-IR techniques were applied to characterize the catalysts. The effect of different amounts of ethanol and different operating conditions was studied on the ZSM-5 catalyst preparation and performance in methanol-to-olefins (MTO) reaction. The results showed that the optimum amount of ethanol (ethanol/TPABr=5) led to the highest crystallinity (91.2%), the highest specific surface area (>400 m2g-1), and total pore volume (0.19 cm3g-1). The best catalytic performance was obtained at temperature of 480°C and methanol hourly space velocity (WHSV) of 7.2 h-1. The optimum catalyst had the highest propylene selectivity (58%) and light olefin selectivity (85%). The results proved the high capability of the new strategy for the efficient and fast development of the MTO catalyst. UR - http://poj.ippi.ac.ir/article_1786.html L1 - http://poj.ippi.ac.ir/article_1786_c24e1da58ed58bc7416ed39b73bebeb8.pdf ER -