Liquid phase selective oxidation of diphenylmethane to benzophenone over ternary hydrotalcites with tert-butylhydroperoxide

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Dasari Kishore (Autor) FEUP; Alírio E. Rodrigues (Autor) FEUP

Revista

Título: Catalysis Communications

Páginas: 1212-1215

ISSN: 1566-7367

Editora: Elsevier

Indexação

ISI Web of Science

Scopus

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Outras Informações

DOI: 10.1016/j.catcom.2009.01.023

Abstract (EN): Selective oxidation of diphenylmethane to benzophenone was carried out over M–MgAl ternary hydrotalcites, where M is Cu, Co or Fe, using tert-butylhydroperoxide (TBHP) as an oxidant. Influence of various reaction parameters, such as reaction temperature, reaction time, substrate: catalyst mass ratio, substrate: oxidant mole ratio and nature of solvent on the activity and selectivity for the desired reaction were evaluated. Among the catalysts studied CuMgAl-13 showed a maximum diphenylmethane conversion of 95% with 100% selectivity towards benzophenone, at 65 oC/24 h with TBHP as an oxidant and acetonitrile as a solvent. Redox metal species present in the hydrotalcite structure were thought to be the active centers involved and a reaction mechanism involving free radicals was proposed.

Idioma: Português

Tipo (Avaliação Docente): Científica