Influencia do titanio em catalisadores a base de rutenio para a hidrogenação parcial de benzeno

AUTOR(ES)
DATA DE PUBLICAÇÃO

1998

RESUMO

The main objective of this work is to study the Ti influence over the properties of Ru catalysts, used in partial hydrogenation of benzene to cyclohexene. Thus, TI O IND. 2 and AL IND. 2? O IND. 3 supported Ru catalysts were prepared by incipient support impregnation with aqueous solution of Ru CL IND.3 RU / AL IND. 2"O IND. 3 catalytic system was prepated in various Ti contents, whilst RU / TI O IND. 2 system was activated in different reduction temperatures under H IND. 2 atmosphere. Prepared catalysts were characterized through several chemical and physic techniques, thus evaluating their performance in the reaction of interest. Reaction was carried out under 5,0 MPa H IND. 2 pressure and at temperature of 100 DEGREES C, in an agitated reactor using metylcyclohexane as solvent. The experimental results show that the Ti addition into the RU / AL IND. 2 O IND. 3 system increases catalytic activity and the maximum cyclohexene yield, specially for low additive contents. For the RU TI O IND. 2 systems, the activation temperature of 300 DEGREES C led to the best catalytic performance (higher cyclohexene yields), when compared to 150 DEGREES C, 250 DEGREES C, 400 DEGREES C AND 500 DEGREES C activated catalysts in the series, and when compared to the RU / AL IND. 2 O IND. 3 systems, activated at 300 DEGREES C... Note: The complete abstract is available with the full electronic digital thesis or dissertations.

ASSUNTO(S)

benzeno catalisadores do grupo da platina titanio catalise heterogenea rutenio hidrogenação

ACESSO AO ARTIGO

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