Реферат: The interaction of phenols with ammonia in the presence of Pt metals opens up a new route for the production of aromatic amines. A multistep reaction for the production of 2,6-dimethylaniline from ammonia and 2,6-dimethylphenol, assisted by a Pd/C catalyst, has been studied. The anchoring colloidal Pd(OH)2 on a granulated carbon support enables an eggshell-type catalyst to be obtained with a narrow size distribution of Pd particles (40 – 60 Å). The kinetic principles involved in the transformation of all stable intermediates over the Pd/C catalyst have been established. Thus, 2,6-dimethylaniline is formed from 2,6-dimethylphenol via the interaction of 2,6-dimethylcyclohexanone with ammonia. Gas-liquid chromatography, IR and 1H and 14N NMR methods have been employed to characterize the transformations of 2,6-dimethylcyclohexanone and ammonia to 2,6-dimethyl-aniline. The data obtained suggest that surface hydride states of Pd of an acid type catalyze the addition of ammonia to the carbonyl group of 2,6-dimethyl-cyclohexanone to produce 2,6-dimethylcyclohexylimine which then dehydrogenates to yield 2,6-dimethylaniline. A general kinetic scheme for the transformation of 2,6-dimethylphenol to 2,6-dimethylaniline and a mechanism for the key step have been proposed.

Библиографическая ссылка: Semikolenov V.A. , Boldyreva M.E. , Shmidt Y.V. , Stepanov A.G.
Formation of 2,6-Dimethylaniline from 2,6-Dimethylphenol with Catalysts Obtained via Anchoring Colloidal Palladium Compounds on Carbon Supports
Journal of Molecular Catalysis. 1989. V.55. N1. P.415-428. DOI: 10.1016/0304-5102(89)80276-7 WOS Scopus РИНЦ CAPlusCA OpenAlex Sciact

Даты:

Опубликована в печати:	1 нояб. 1989 г.
Опубликована online:	2 окт. 2001 г.

Идентификаторы БД:

Web of science:	WOS:A1989CG95900040
Scopus:	2-s2.0-0024767196
РИНЦ:	31094202
Chemical Abstracts:	1990:496772
Chemical Abstracts (print):	113:96772
OpenAlex:	W2020052155
Sciact:	12842

Цитирование в БД:

БД	Цитирований
Scopus	11
OpenAlex	9

Альметрики: