首页|Microporous and Micro-meso-macroporous Y Zeolites in the Synthesis of 2-Methyl-5-ethylpyridine
Microporous and Micro-meso-macroporous Y Zeolites in the Synthesis of 2-Methyl-5-ethylpyridine
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Springer Nature
The study investigates the catalytic properties of microporous (H-Y) and micro-meso-macroporous (H-Y-mmm) FAU-type zeolites in the synthesis of 2-methyl-5-ethylpyridine (MEP) by the reaction of acetaldehyde with ammonia. At 150 degrees C, an acetaldehyde to ammonia molar ratio of 1 : 3, and a catalyst content of 10 wt %, a MEP yield of 58% (0.95H-Y) and 63% (0.95H-Y-mmm) was achieved with a MEP selectivity of 91 and 93%, respectively. The examination of the catalyst stability revealed that hierarchical H-Y-mmm zeolites ensure a 100% MEP selectivity during 4-5 cycles with a slight decline in the catalytic activity, while H-Y zeolites are active during the first cycle only.
2-methyl-5-ethylpyridineY zeolitehierarchical Y zeolitecyclocondensation
Grigor'eva, N. G.、Filippova, N. A.、Bubennov, S. V.、Khazipova, A. N.、Kutepov, B. I.、Dyakonov, V. A.
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Russian Acad Sci, Inst Petr Chem & Catalysis, Ufa 450075, Russia