Liquid-Phase Hydrogenation of Nitrobenzene in a Tubular Reactor: Parametric Study of the Operating Conditions Influence

• Tipo: Artigo em Revista Científica Internacional
• Data: 2017

Autores

Clara Sá Couto (Autor) Outra; Luís M. Madeira (Autor) FEUP; Paulo Araújo (Autor) Outra; Clemente Pedro Nunes (Autor) Outra

Revista

Título: Industrial and Engineering Chemistry Research

Vol. 56 Nº 12

Páginas: 3231-3242

ISSN: 0888-5885

Indexação

ISI Web of Knowledge - 6 Citações

ISI Web of Science

Scopus - 7 Citações

Projetos Associados

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Outras Informações

ID Authenticus: P-00M-MEY

DOI: 10.1021/acs.iecr.7b00403

Abstract (EN): : Fixed-bed reactors for nitrobenzene (NB) hydrogenation into aniline (ANL) in the liquid phase have not experienced extensive industrial-scale development, mostly due to difficulties in removing the reaction heat generated. In this work, NB hydrogenation was performed in a tubular fixed-bed reactor using a Pd/Al2O3 commercial catalyst. The influence of some operating conditions was analyzed by assessing catalyst performance in NB conversion and selectivity toward ANL and secondary products. It was found that catalyst time of usage is extremely importantwhile NB conversion remains stable, selectivity toward the products formed changes (ANL selectivity increases with the catalyst use but the formation of secondary products decreases until almost disappearing). It was also found that temperature and pressure are the most important parameters in the ranges studied and that NH3, which is a reaction product with potential influence in gas composition, does not affect NB conversion but helps decreasing secondary products formation.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12