Lanthanide Modified SAPO-34 Nanocatalysts for Methanol to Propylene Conversion

The evaluation of small-pore molecular sieves as catalysts for the conversion of methanol to light olefins (MTO) has shown that SAPO-34 exhibits the best performance based on catalyst life, selectivity to C2-C4 olefins, minimum paraffinic and aromatic byproducts and catalyst stability and regenerability.SAPO-34 molecular sieves can be selectively formed with hydrothermal methods irrespective of the acidity or the types of the templates. In this work, Silicoaluminophosphate (SAPO)-34 molecular sieves modified with internal transition metals such as Praseodymium and Neodymium were investigated for their activity, selectivity, and lifetime in the methanol to olefins (MTO) reaction and compared with that of unmodified SAPO-34 These catalysts increase propylene selectivity in MTO reaction the structure of synthesized catalysts have been characterized with several methods such as FT-IR, TGA, SEM, BET and XRD.

کلیدواژه ها:

SAPO-34 ، MTO ، Propylene selectivity ، Lanthanides ، Nanocatalysts