Zhu, Xiaolin Zhang, Jiaoyu Cheng, Ming Wang, Guowei Yu, Mingxuan Li, Chunyi Methanol Aromatization over Mg–P-Modified [Zn,Al]ZSM‑5 Zeolites for Efficient Coproduction of <i>para</i>-Xylene and Light Olefins In this work, a series of [Zn,Al]­ZSM-5 zeolites was synthesized via isomorphous substitution using different Zn precursors, and the as-obtained zeolites were further subjected to Mg–P surface modification for efficient production of <i>p</i>-xylene and light olefins (C<sub>2</sub><sup>=</sup> ≈ C<sub>4</sub><sup>=</sup>) from methanol. The synthesized [Zn,Al]­ZSM-5 zeolites are highly active in methanol to aromatics (MTA) reaction. Ascribed to the uniformly dispersed Zn species and greatly enhanced dehydro-cyclization reaction, [ZnS]­ZSM-5 synthesized from ZnSO<sub>4</sub> exhibited the most efficient MTA performance (∼62 wt % aromatics yield). Through fine modulation of zeolite pore openings and acidic properties, the subsequent Mg–P comodification improved the shape selectivity to <i>p</i>-xylene and also led to abundant coproduction of light olefins. The resultant Mg–P/[ZnS]­ZSM-5 catalyst showed an outstanding performance for methanol aromatization in both this work and the open literature, directly yielding ∼23 wt % <i>p</i>-xylene (∼187% para-selectivity) from methanol feedstock. light olefins;Mg;wt;Zn;zeolite pore openings;aromatic;methanol;performance;MTA;xylene 2019-10-08
    https://acs.figshare.com/articles/journal_contribution/Methanol_Aromatization_over_Mg_P-Modified_Zn_Al_ZSM_5_Zeolites_for_Efficient_Coproduction_of_i_para_i_-Xylene_and_Light_Olefins/9956504
10.1021/acs.iecr.9b03743.s001