In the present study, SAPO-34 particles were synthesized using hydrothermal (HT) and
dry gel (DG) conversion methods in the presence of diethyl amine (DEA) as an organic structure
directing agent (SDA). Carbon nanotubes (CNT) were used as a hard template in the synthesis
procedure to introduce transport pores into the structures of the synthesized samples. The
synthesized samples were characterized with different methods to reveal the effects of synthesis
method and using hard template on their structure and catalytic performance in methanol to olefin
reaction (MTO). DG conversion method results in smaller particle size in comparison with
hydrothermal method, resulting in enhancing catalytic performance. On the other side, using CNT
in the synthesis procedure with DG method results in more reduction in particle size and formation
of hierarchical structure, which drastically improves catalytic performance.
Keywords: Light olefins, methanol to olefins, SAPO-34, dry gel conversion, hard template, hierarchical structure.
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