Features of the kinetics of 4-nitroaniline and azoxybenzene hydrogenation in 2-propanol aqueous solutions

Autor:	O. V. Lefedova, A. A. Merkin, Nguen Tkhi Tkhu Kha
Rok vydání:	2013
Předmět:	chemistry.chemical_classification Propanol Azoxy chemistry.chemical_compound Aqueous solution Aniline Base (chemistry) chemistry Sodium hydroxide Inorganic chemistry Physical and Theoretical Chemistry 4-Nitroaniline Catalysis
Zdroj:	Russian Journal of Physical Chemistry A. 87:571-575
ISSN:	1531-863X 0036-0244
DOI:	10.1134/s0036024413040195
Popis:	It is shown experimentally that the hydrogenation of 4-nitroaniline and azoxybenzene over a skeletal nickel catalyst in 2-propanol aqueous solutions proceeds selectively with the formation of the corresponding amines without the accumulation of side products in the bulk phase. It is concluded that during reduction, considerable participation of hydrogen bonded with active centers of a catalyst surface was observed. The competitive character of adsorption between the initial azoxybenzene and aniline formed as a result of reaction is established. It is ascertained that the character of changes in the rates of hydrogenation of nitro and azoxy groups is identical in the presence of additions of acid or base. It is demonstrated that a targeted change in the hydrogenation rates of these compounds is possible by introducing additions of acetic acid or sodium hydroxide into 2-propanol aqueous solution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2b2db1949232de4dd48e6e090812ac10 https://doi.org/10.1134/s0036024413040195 Zobrazit plný text záznamu Full text from SpringerLink