基于化学链甲烷重整制氢的钙钛矿载氧体研究综述

A review of research on perovskite oxygen carrier for chemical looping reforming of methane

  • 摘要: 化学链甲烷重整工艺能够同时制取合成气和高纯氢气,避免制氢过程CO2的排放,对实现“双碳”目标具有重要意义。高性能、低成本载氧体的选择是化学链甲烷重整制氢的关键,由于具有丰富的氧空位和良好的热稳定性,钙钛矿载氧体成为化学链甲烷重整所需载氧体的研究热点。本工作介绍了化学链甲烷重整工艺,包括化学链甲烷水蒸气重整、化学链甲烷干重整和化学链甲烷部分氧化重整;综述了钙钛矿型Fe基、Ni基、Mn基载氧体以及负载型钙钛矿载氧体的最新研究进展,并分析比较了不同金属基钙钛矿载氧体的孔隙结构、表面形貌、氧化还原性能和反应机理;总结了钙钛矿载氧体面临的挑战和发展前景。

     

    Abstract: The chemical looping reforming of methane can simultaneously produce synthesis gas and high-purity hydrogen gas, avoiding the emission of CO2 during the hydrogen production process, which is of great significance for achieving the “dual carbon” goal. The selection of high-performance and low-cost oxygen carriers is crucial for chemical looping reforming of methane. Due to its abundant oxygen vacancies and good thermal stability, perovskite oxygen carriers have become a research hotspot for the oxygen carriers required for chemical looping reforming of methane. This paper first introduces chemical looping reforming of methane, including chemical looping steam methane reforming, chemical looping dry reforming of methane, and chemical looping partial oxidation reforming of methane. Then, the latest research progress on perovskite type Fe based, Ni based, Mn based oxygen carriers and supported perovskite oxygen carriers was summarized, and the pore structure, surface morphology, redox performance, and reaction mechanism of different metal based perovskite oxygen carriers were analyzed and compared. Finally, the challenges and development prospects faced by perovskite oxygen carriers were summarized.

     

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