ZSM 12

ZSM 12 chemical formula: Al₆Si_nP₆-nO₂₄]-CHA, 0.8

The structural properties of two series of high silicon aluminum ratio ZSM-12 zeolites synthesized using methyltriethylammonium iodide (MTEA) and tetraethylammonium iodide (TEA) as template agents The XRD results indicate that due to different template agents, the two series of ZSM-12 zeolites exhibit significant differences. As the silicon aluminum ratio increases, the decrease is in the T located in the main pore channel_ 1-T_ Skeleton aluminum at position 4. Also using NH_ The surface acidity properties of ZSM-12 zeolites from MTEA and TEA series were systematically studied using two methods, 8-TPD and pyridine-IR-TPD; The catalytic performance of the molecular sieve was studied by cracking isopropylbenzene, alkylating toluene with methanol, and isomerizing xylene.

ZSM-12 is used in various reaction processes such as cracking, hydrocracking, isomerization, alkylation, polymerization, reforming, dehydration, etc.

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