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Kang, Shin Wook,Kim, Kyeounghak,Chun, Dong Hyun,Yang, Jung-Il,Lee, Ho-Tae,Jung, Heon,Lim, Jung Tae,Jang, Sanha,Kim, Chul Sung,Lee, Chan-Woo,Joo, Sang Hoon,Han, Jeong Woo,Park, Ji Chan Elsevier 2017 Journal of catalysis Vol.349 No.-
<P><B>Abstract</B></P> <P>Highly-loaded and well-dispersed Fe<SUB>5</SUB>C<SUB>2</SUB> nanoparticles within ordered mesoporous carbon CMK-3 (Fe<SUB>5</SUB>C<SUB>2</SUB>@CMK-3) were prepared via a simple melt infiltration method. They were successfully applied to high-temperature Fischer-Tropsch synthesis, and showed high CO conversion (91%) and activity (5.1×10<SUP>−4</SUP> mol<SUB>co</SUB> g<SUB>Fe</SUB> <SUP>−1</SUP> s<SUP>−1</SUP>) as well as good selectivity (38wt%) for gasoline-range hydrocarbons (C<SUB>5</SUB>–C<SUB>12</SUB>). The catalytic property of Fe<SUB>5</SUB>C<SUB>2</SUB>@CMK-3 was newly interpreted, based on theoretical data obtained by computational simulations.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The Fe<SUB>5</SUB>C<SUB>2</SUB>@CMK-3 catalyst was designed for gasoline-range hydrocarbon production. </LI> <LI> The catalyst showed high stability and activity for Fischer-Tropsch synthesis. </LI> <LI> The catalytic property of Fe<SUB>5</SUB>C<SUB>2</SUB>@CMK-3 was interpreted by computational simulations. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Park, Ji Chan,Jang, Sanha,Rhim, Geun Bae,Lee, Jin Hee,Choi, Hyunkyoung,Jeong, Heon-Do,Youn, Min Hye,Lee, Dong-Wook,Koo, Kee Young,Kang, Shin Wook,Yang, Jung-Il,Lee, Ho-Tae,Jung, Heon,Kim, Chul Sung,Ch Elsevier 2018 Applied catalysis. A, General Vol.564 No.-
<P><B>Abstract</B></P> <P>Improvement of activity, selectivity, and stability of the catalyst used in Fischer-Tropsch synthesis (FTS) to produce targeted hydrocarbon products has been a major challenge. In this work, the potassium-doped iron-carbide/alumina (K-Fe<SUB>5</SUB>C<SUB>2</SUB>/Al<SUB>2</SUB>O<SUB>3</SUB>), as a durable nanocatalyst containing small iron-carbide particles (∼ 10 nm), was applied to high-temperature Fischer-Tropsch synthesis (HT-FTS) to optimize the production of linear alpha olefins. The catalyst, suitable under high space velocity reaction conditions (14–36 N L g<SUB>cat</SUB> <SUP>−1</SUP> h<SUP>−1</SUP>) based on the well-dispersed potassium as an efficient base promoter on the active iron-carbide surface, shows very high CO conversion (up to ∼90%) with extremely high activity (1.41 mmol<SUB>CO</SUB> g<SUB>Fe</SUB> <SUP>−1</SUP> s<SUP>−1</SUP>) and selectivity for C<SUB>5</SUB>–C<SUB>13</SUB> linear alpha olefins.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The potassium-doped iron-carbide/alumina nanocatalyst was prepared for effective production of linear alpha olefins. </LI> <LI> The active iron-carbide nanoparticles (∼10 nm) with potassium on gamma-alumina could enhance catalytic performance. </LI> <LI> The catalyst showed high stability and activity for high-temperature Fischer-Tropsch synthesis. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>A potassium-doped iron-carbide/alumina nanocatalyst shows very high CO conversion (∼90%) and significant productivity for C<SUB>5</SUB>–C<SUB>13</SUB> linear alpha olefins in Fischer-Tropsch synthesis under high space velocity conditions.</P> <P>[DISPLAY OMISSION]</P>