Dry reforming of CH₄ with CO₂ is an effective way to convert these two greenhouse gases into useful industrial feedstock. Here, we designed and developed Ni@Y₂O₃ nanofibers catalyst by pyrolyzing sheet-like Ni₂(CO₃) (OH)₂ grown in situ on the surface of Y₂O₃ nanofibers. Y₂O₃ nanofibers support can not only promote the contact of the reaction gas with the catalyst due to its self-supporting effect, but also improve the ability to capture CO₂ because of its basic oxide properties. Meanwhile, the oxygen exchange between the catalyst and CO₂ could promote the oxidation of carbon deposits, and further improve activity and stability of the catalyst. Besides, the catalyst obtained by low-temperature pyrolysis could maintain the sheet-structure of nickel on the surface of support, which is conducive to improve its catalytic activity, stability, and resistance to carbon deposition. This work has a positive effect on improving the design of catalysts as well as producing industrial chemicals and reducing the environmental pollution.

用CO ₂干重整CH ₄是将这两种温室气体转化成有用的工业原料的有效方法。在这里，我们通过热解在Y ₂ O ₃纳米纤维表面上原位生长的片状Ni ₂（CO ₃）（OH）_2来设计和开发Ni @ Y ₂ O ₃纳米纤维催化剂。Y ₂ O ₃纳米纤维载体由于自身的支持作用，不仅可以促进反应气体与催化剂的接触，还可以提高捕获CO ₂的能力。由于其基本的氧化物特性。同时，催化剂与CO ₂之间的氧交换可以促进碳沉积物的氧化，并进一步提高催化剂的活性和稳定性。此外，通过低温热解获得的催化剂可以在载体表面上保持镍的片状结构，这有利于提高其催化活性，稳定性和抗碳沉积性。这项工作对改进催化剂的设计以及生产工业化学品和减少环境污染具有积极作用。