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International Journal of Chemical Reactor Engineering

Ed. by de Lasa, Hugo / Xu, Charles Chunbao

12 Issues per year


IMPACT FACTOR 2017: 0.881
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1542-6580
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Hydrogenation of Citral Over Ni on Monolith

Jeannette Aumo / Jyri-Pekka Mikkola / Jose Bernechea / Tapio Salmi / Dmitry Murzin
Published Online: 2005-09-04 | DOI: https://doi.org/10.2202/1542-6580.1197

Citral was hydrogenated over Ni on alumina wash-coated cordierite monoliths in a screw impeller batch reactor. The prepared catalyst was characterized by means of nitrogen adsorption (BET), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The performance of the monolith reactor configuration at different temperatures and pressures was compared. Reasonable reaction rate was obtained even after 18 consecutive experiments without regeneration of the catalyst. At temperatures up to 80°C and 5 bar pressure the selectivity to citronellal was ca. 93 %. Increasing the temperature to 100°C decreased the selectivity of citronellal to 65 %. At 100°C and 40 bar pressure the selectivity of citronellal was diminished to 1.4 % due to the formation of the fully hydrogenated product 3,7-dimethyloctanol with a selectivity of 93 %.

Keywords: citral hydrogenation; monolith; multiphase reactors; selectivity; deactivation

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Published Online: 2005-09-04


Citation Information: International Journal of Chemical Reactor Engineering, Volume 3, Issue 1, ISSN (Online) 1542-6580, DOI: https://doi.org/10.2202/1542-6580.1197.

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