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DYNA

versão impressa ISSN 0012-7353

Resumo

ROJAS, HUGO et al. ACROLEIN AND CROTONALDEHYDE HYDROGENATION ON IR-SUPPORTED CATALYSTS. Dyna rev.fac.nac.minas [online]. 2009, vol.76, n.159, pp.125-134. ISSN 0012-7353.

The behavior of different Ir catalysts in the hydrogenation of a,b-unsaturated acrolein and crotonaldehyde aldehydes has been evaluated to obtain their allyl and crotyl unsaturated alcohols respectively; their products are used in fine chemicals industry. The present work is of great importance in this field because of the unsaturated aldehydes studied having high environmental risk besides the great academic contribution. The results show that factors such as reduction temperature and TiO2 content are critical in the catalytic behavior, through the analysis of characterization was established that the catalysts reduced at high temperature shows the Strong Metal Support Interaction effect (SMSI), which favors conversion percentage, initial activity and TOF. The analyzed catalysts were highly selective towards the unsaturated alcohols.

Palavras-chave : Crotonaldehyde; Acrolein; Unsaturated alcohol; hydrogenation; Ir-supported catalysts; SMSI effect.

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