Concentration Effects in the Hydrogenation of 4-Nitro-2′-Hydroxy-5′-Methylazobenzene over Skeletal Nickel in an Aqueous 2-Propanol Solution

Autor:	Hoang Anh, M. P. Nemtseva, O. V. Lefedova
Rok vydání:	2018
Předmět:	Propanol chemistry.chemical_compound Nickel Aqueous solution chemistry Kinetics Nitro chemistry.chemical_element Group transformation Physical and Theoretical Chemistry Solubility Nuclear chemistry
Zdroj:	Russian Journal of Physical Chemistry A. 92:669-673
ISSN:	1531-863X 0036-0244
DOI:	10.1134/s0036024418040131
Popis:	The kinetics of hydrogenation of 4-nitro-2′-hydroxy-5′-methylazobenzene in aqueous 2-propanol solution over the skeletal nickel is investigated at different initial concentrations. It is established that the hydrogenation of 4-nitro-2′-hydroxy-5′-methylazobenzene over a skeletal nickel in azeotropic aqueous 2-propanol solution proceeds via two parallel pathways at both low and high initial concentrations. It is shown that increasing the initial concentration of the hydrogenated compound above its level of solubility raises the rate of azo group transformation in 4-nitro-2′-hydroxy-5′-methylazobenzene, while the content of 4-amino-2′- hydroxy-5′-methylazobenzene does not change in the hydrogenate and is not accumulated in the bulk of solution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::91cf865ef40d6f4e0b8021de6df6ee50 https://doi.org/10.1134/s0036024418040131 Zobrazit plný text záznamu Full text from SpringerLink