SciELO - Scientific Electronic Library Online

 
vol.77 issue162BASIC ASPECTS IN THE INTERPRETATION OF THE DIAGRAMS OF ELECTOCHEMICAL IMPEDANCE author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


DYNA

Print version ISSN 0012-7353

Abstract

ROJAS, HUGO; CASTANEDA, JULIO CESAR  and  REYES, PATRICIO. ISOPULEGOL OBTAIN OVER Ir/Nb2O5/SiO2 CATALYST. KINETIC APPROACH. Dyna rev.fac.nac.minas [online]. 2010, vol.77, n.162, pp.5-12. ISSN 0012-7353.

Kinetics of Citronellal conversion to isopulegol over catalyst was performed in a range of temperature 303 - 343 K, a hydrogen pressure 0.62 - 0.20 MPa and a citronelal concentrations at 0.1M to 0.025 M. The results indicate that the catalyst of Iridium supported over SiO2-Nb2O5 induces selectivity towards isopulegol due to high acidity and the presence of surface metal sites. To avoid mass transfer limitations were used a vigorous agitation and small amounts of catalyst ( 0.05 g). The analysis of rates reaction provided an initial order 1 with respect to concentration and zero order with respect to pressure. Results are explained using a model of complex reactions of the first order.

Keywords : Citronellal; Isopulegol; Citronellol; Acidity and Kinetics.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License