%0 Journal Article
%T Conversion of 5-Methyl-3-Heptanone to C8 Alkenes and Alkane over Bifunctional Catalysts
%J Catalysts | An Open Access Journal from MDPI
%D 2019
%R https://doi.org/10.3390/catal9100845
%X A one-step catalytic process was used to catalyze the hydrodeoxygenation of 5-methyl-3-heptanone (C 8 ketone) to a mixture of 5-methyl-3-heptene, 5-methyl-2-heptene (C 8 alkenes), and 3-methyl heptane (C 8 alkane). High conversion of C 8 ketone to the desired products was achieved over a single bed of a supported catalyst (bifunctional heterogeneous catalyst) consisting of one transition metal (copper (Cu) or platinum (Pt)) loaded on alumina (Al 2O 3) under mild operating conditions (reaction temperatures were varied between 180 ˇăC to 260 ˇăC, and the pressure was 1 atm). The C 8 ketone was hydrogenated to 5-methyl-3-heptanol (C 8 alcohol) over metal sites, followed by dehydration of the latter on acid sites on the support to obtain a mixture of C 8 alkenes. These C 8 alkenes can be further hydrogenated on metal sites to make a C 8 alkane. The results showed that the main products over copper loaded on alumina (20 wt% Cu¨CAl 2O 3) were a mixture of C 8 alkenes and C 8 alkane in different amounts depending on the operating conditions (the highest selectivity for C 8 alkenes (~82%) was obtained at 220 ˇăC and a H 2/C 8 ketone molar ratio of 2). However, over platinum supported on alumina (1 wt% Pt¨CAl 2O 3), the major product was a C 8 alkane with a selectivity up to 97% and a conversion of 99.9% at different temperatures and all H 2/C 8 ketone ratios. View Full-Tex
%U https://www.mdpi.com/2073-4344/9/10/845