Abstract
ZSM-5 has emerged as a promising catalyst for iso-butane catalytic cracking due to its unique pore structures and abundant acid sites. And the optimization of catalytic performance has attracted more and more attention. Herein, a series of Pt and Mn-embedded Pt-xMn@HZSM-5 catalysts with different Mn complexes were successfully synthesized via the one-pot hydrothermal method (x refers to the Mn/Pt ratio). The ligand effects of both ethylenediamine and ethylenediaminetetraacetic acid disodium salt on the nature of target samples in terms of crystallinity, porosity, morphology, metal state, and acidity, were investigated in detail. It has been demonstrated that ethylenediamine served as a ligand enabled Pt-xMn@HZSM-5 more metal nanoparticles and acid sites, thereby delivering improved catalytic performance and high yields of ethylene, propylene and BTX (benzene, toluene, and xylene) for iso-butane catalytic cracking.
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