Exploring Spinel Oxides for CO<sub>2</sub> Hydrogenation in Tandem Reaction with SSZ-13 Catalyst

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  • HASHIMOTO Kazuya
    Dept. of Applied Chemistry, Waseda University
  • SAKAI Motomu
    Dept. of Applied Chemistry, Waseda University
  • MATSUKATA Masahiko
    Dept. of Applied Chemistry, Waseda University Research Organization for Nano & Life Innovation, Waseda University Advanced Research Institute for Science and Engineering, Waseda University

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  • SSZ-13触媒とのタンデム反応によるCO<sub>2</sub>水素化のためのスピネル酸化物の探索
  • Exploring Spinel Oxides for CO₂ Hydrogenation in Tandem Reaction with SSZ-13 Catalyst

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<p>Recent advancements in tandem reactions, specifically the single step of conversion of CO2 to methanol and subsequent hydrocarbon synthesis from methanol (MTH), have attracted attention. This study presents such tandem reactions over various spinel oxides and SSZ-13 catalysts. The catalytic performance of 26 different spinel oxides was tested with SSZ-13 zeolite. Zn-based spinel oxide tandem catalysts (ZnAl2O4, ZnCr2O4, ZnFe2O4, ZnGa2O4) exhibited high hydrocarbon yields at 653 K and 1.0 MPa. Furthermore, amorphous Zn–Al–O and SSZ-13 tandem catalyst yielded 3.1 % of hydrocarbon while the tandem catalyst of spinel Zn–Al–O and SSZ-13 tandem catalyst yielded 7.2 %, indicating that the spinel structure is essential for the first step of the tandem reaction, methanol synthesis. ZnFe2O4 was found to have a high hydrocarbon yield per surface area in the tandem reaction at 653-673 K, more than 100 K higher than conventional methanol synthesis.</p>

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