"Synt\u00E9za pyridin\u016F v plynn\u00E9 f\u00E1zi na zeolitech"@cs . . "RIV/61388955:_____/07:00091836" . . . "0010-0765" . "Bejblov\u00E1, Martina" . "Synthesis of pyridines over zeolites in gas phase"@en . . . "Synthesis of pyridines over zeolites in gas phase"@en . . "72" . "Slobodn\u00EDk, M." . "Pyridine and its methyl derivatives were synthesized in vapor phase from ethanol, formaldehyde and ammonia over zeolites H-ZSM-5, Beta, mordenite and over SiO2. Both the Si/Al molar ratio and modification of zeolite with zinc strongly influenced the selectivity in pyridine and alkylpyridines formation. The highest yield of pyridine was obtained over ZSM-5 modified with zinc and the highest pyridine-to-alkylpyridines ratio was achieved over H-ZSM-5 with high Si content (Si/Al ratio 140). The conversion of ethanol and the selectivity in pyridine formation were correlated with the acidity of used catalyst."@en . "5-6" . . "Pyridine and its methyl derivatives were synthesized in vapor phase from ethanol, formaldehyde and ammonia over zeolites H-ZSM-5, Beta, mordenite and over SiO2. Both the Si/Al molar ratio and modification of zeolite with zinc strongly influenced the selectivity in pyridine and alkylpyridines formation. The highest yield of pyridine was obtained over ZSM-5 modified with zinc and the highest pyridine-to-alkylpyridines ratio was achieved over H-ZSM-5 with high Si content (Si/Al ratio 140). The conversion of ethanol and the selectivity in pyridine formation were correlated with the acidity of used catalyst." . "[83A471806B42]" . . . "Cvengro\u0161ov\u00E1, Z." . "Hronec, M." . "618;628" . "pyridine; pyridine bases; ZSM-5; ethanol"@en . . . . "2"^^ . "Pyridin a jeho methylov\u00E9 deriv\u00E1ty byly syntetizov\u00E1ny v plynn\u00E9 f\u00E1zi z ethanolu, formaldehydu a amoniaku. Reakce byla katalyzov\u00E1na n\u011Bkolika typy zeolit\u016F (H-ZSM-5, Beta, Mordenit) a SiO2. Selektivitu vzniku pyridinu i alkylpyridin\u016F byla siln\u011B ovliv\u0148ov\u00E1na jednak pom\u011Brem Si/Al a tak\u00E9 modifikac\u00ED zeolit\u016F zinkem. Nejvy\u0161\u0161\u00ED v\u00FDt\u011B\u017Eek pyridinu byl z\u00EDsk\u00E1n reakc\u00ED katalyzovanou zeolitem ZSM-5 modifikovan\u00FDm zinkem a nejvy\u0161\u0161\u00EDho pom\u011Bru pyridin/alkylparidiny bylo dosa\u017Eeno p\u0159i pou\u017Eit\u00ED H-ZSM-5 s vysok\u00FDm obsahem k\u0159em\u00EDku (Si/Al 140)."@cs . "RIV/61388955:_____/07:00091836!RIV08-AV0-61388955" . "Synt\u00E9za pyridin\u016F v plynn\u00E9 f\u00E1zi na zeolitech"@cs . . . "R, Z(AV0Z40400503)" . "Synthesis of pyridines over zeolites in gas phase" . . "Synthesis of pyridines over zeolites in gas phase" . "Collection of Czechoslovak Chemical Communications" . "11"^^ . "\u010Cejka, Ji\u0159\u00ED" . "453949" . . . "5"^^ . . "CZ - \u010Cesk\u00E1 republika" .