Pure hydrogen was produced by means of chemical looping steam methane reforming with novel oxygen carriers. Ni‐ferrite, Ni‐ferrite‐ZrO₂, and Ni‐ferrite‐CeO₂ were synthesized as oxygen carriers and characterized by X‐ray diffraction (XRD), Brunauer‐Emmett‐Teller (BET) method, scanning electron microscopy (SEM), dynamic light scattering (DLS), and hydrogen temperature‐programmed reduction (H₂‐TPR). The performances of the as‐synthesized oxygen carriers in the cyclic oxidation‐reduction were investigated in the packed‐bed microreactor at a defined temperature range and under atmospheric pressure. Ni_0.39Fe_2.61O₄‐ZrO₂ exhibited the best performance and maximum methane conversion among the other oxygen carriers. In addition, high selectivities for H₂ and CO were reached.

中文翻译：

---

通过铈和锆氧化物负载的镍铁氧体进行化学循环蒸汽甲烷重整

通过用新型氧气载体对甲烷进行化学循环重整生产纯氢。合成了Ni-铁氧体，Ni-铁氧体-ZrO ₂和Ni-铁氧体-CeO ₂作为氧载体，并通过X射线衍射（XRD），Brunauer-Emmett-Teller（BET）方法，扫描电子显微镜（SEM）进行了表征，动态光散射（DLS）和氢程序升温还原（H ₂ -TPR）。在规定的温度范围和大气压下，在填充床微反应器中研究了合成氧载体在循环氧化还原中的性能。Ni _0.39 Fe _2.61 O ₄ -ZrO ₂在其他氧气载体中表现出最好的性能和最大的甲烷转化率。另外，达到了对H ₂和CO的高选择性。