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<p>This study investigates a series of Mg<sub>n</sub>V<sub>2</sub>O<sub>5+n</sub> (<i>n</i> = 1, 2, 3) oxygen carriers referred to as MV1, MV2, and MV3 for chemical looping oxidative dehydrogenation (CL-ODH). The materials were synthesized via a sol-gel method, and their structural, redox, and catalytic properties were evaluated over 10 cycles. After cycling, both MV1 and MV2 exhibited the formation of secondary phases (MgV<sub>3</sub>O<sub>8</sub> and Mg<sub>2</sub>V<sub>6</sub>O<sub>17</sub>, respectively), while MV3 retained its framework. Among the samples, MV2 demonstrated notable catalytic performance, achieving 85% ethylene selectivity and 14.5% ethylene yield. This performance is primarily attributed to the balanced redox characteristics of the Mg<sub>2</sub>V<sub>2</sub>O<sub>7</sub>-based framework, accompanied by structural modification during cycling.</p>

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A Study on MgnV2O5+n Oxygen Carrier for Chemical Looping Oxidative Dehydrogenation of Ethane

  • 期刊论文

  • 发表日期：

    2026年4月27日

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  • Hyang-Dong Kim,
  • Seung Hun Baek,
  • Jihyeon Shin,
  • Jung Min Sohn

摘要

This study investigates a series of MgnV2O5+n (n = 1, 2, 3) oxygen carriers referred to as MV1, MV2, and MV3 for chemical looping oxidative dehydrogenation (CL-ODH). The materials were synthesized via a sol-gel method, and their structural, redox, and catalytic properties were evaluated over 10 cycles. After cycling, both MV1 and MV2 exhibited the formation of secondary phases (MgV3O8 and Mg2V6O17, respectively), while MV3 retained its framework. Among the samples, MV2 demonstrated notable catalytic performance, achieving 85% ethylene selectivity and 14.5% ethylene yield. This performance is primarily attributed to the balanced redox characteristics of the Mg2V2O7-based framework, accompanied by structural modification during cycling.