Direct synthesis of 3-picoline from 2-methylglutaronitrile over supported PdZn catalyst: promoting effects of Zn

Autor:	Tian Yingxu, Yixin Lian, Weiping Fang, Kang Yang, Wenjing Song, Weikun Lai
Rok vydání:	2018
Předmět:	010405 organic chemistry Chemistry Inorganic chemistry Mechanism analysis 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound Transition metal Molar ratio Yield (chemistry) Dehydrogenation Picoline Physical and Theoretical Chemistry Vicinal
Zdroj:	Reaction Kinetics, Mechanisms and Catalysis. 125:951-964
ISSN:	1878-5204 1878-5190
DOI:	10.1007/s11144-018-1437-6
Popis:	The promotion effect of transition metal on the catalytic performance of a Pd catalyst for the direct synthesis of 3-picoline from 2-methylglutaronitrile was investigated. The PdZn/SiO2–Al2O3 catalysts with appropriate Zn/Pd molar ratio exhibited a high 3-picoline yield. Kinetic and mechanism analysis revealed a kinetically relevant step of dehydrogenation in 3-methyltetrahydropyridine to 3-picoline involving the bound of 3-methyltetrahydropyridine to a Zn site and dehydrogenation by a vicinal Pd site to form 3-picoline. Such synergy between Zn and Pd sites accounted for the observed superiority of PdZn catalysts in direct synthesis of 3-picoline.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::121a2904ee656180ad950f6b63d6d5a1 https://doi.org/10.1007/s11144-018-1437-6 Zobrazit plný text záznamu Full text from SpringerLink