CARMEN ARGESANU, DORIN BOMBOS, VASILE MATEI, TRAIAN JUGANARU, MIHAELA BOMBOS, GABRIEL VASILIEVICI<br>Nitrobenzene Hydrogenation over Catalysts Cu based <br>Supported on Activated Charcoal

CARMEN ARGESANU, DORIN BOMBOS, VASILE MATEI, TRAIAN JUGANARU, MIHAELA BOMBOS, GABRIEL VASILIEVICI
Nitrobenzene Hydrogenation over Catalysts Cu based
Supported on Activated Charcoal

Abstract:

Hydrogenation of nitrobenzene to amino aromatics was performed using catalysts Cu based supported on charcoal. Experiments were performed in a continuous sistem and fixed bed reactor at a pressure of 10 - 40 bar, and a temperature of 45 -75 0C, with a weight hourly space velocities of nitrobenzene of 0.2 - 0.6 h-1and a molar ratio hydrogen / nitrobenzene of 10; nitrobenzene was diluted in n-heptane. Acid strength distribution of the two catalysts (1.5% Ru-5% Cu activated carbon and 5% Cu/activated carbon) where determined by termodesorption of diethyl amine. The major compounds identified in the hydrogenation of nitrobenzene were aniline, diphenylamine, diphenylhydrazine, azobenzene and nitrocyclohexane. It was observed that the conversion of nitrobenzene and aniline yield shows a parabolic variation with increasing of pressure, probably due to sintering of the catalyst at higher pressure, which is favored by high exothermicity of the hydrogenation process of nitrobenzene correlated with the increase of the proportion of nitrobenzene in liquid phase. Keywords : nitrobenzene, catalyst, hydrogenation, support acidity, aniline

Issue: 2014, Volume 65, Issue 11

Pages:

Download Pdf Article

This article is published under the Creative Commons Attribution 4.0 International License

<<<< back

PUBLISHING SECTION

Author Guidelines

* Paper Drafting

* Paper Template

* Ethical Statement

* Paper Submission

Ghidul Autorului (ro)

Open Access & Archiving Policy

Search Authors

LATEST NEWS
	NUMAR OMAGIAL PETRU PONI.. detalii
	Revista de Chimie - 70 de ani de aparitie neintrerupta.. detalii
	English-Romanian Dictionary for Mechanical Engineering (download pdf)