Achieving efficient and stable hydrogen production has always been the focus of the industry, and ethanol steam reforming (ESR) is one of the most reliable, recyclable, and cheap technologies. Perovskite nanocomposite catalysts LaNi_xCo_1−xO_3−δ (x = 0, 0.5, 0.9) have been prepared by an EDTA-citric acid complexing sol–gel method and used for hydrogen production by ESR. A scanning electron microscopy (SEM), X‐ray diffraction (XRD), EDS and BET were used to characterize the crystal structure of the fresh and the reduced LaNi_0.5Co_0.5O_3−δ. The optimal operating parameters of ESR experiments by Ni-doped LaNi_xCo_1−xO_3−δ perovskites were evaluated in detail. Results indicate that the optimum conditions for ESR are as below: reforming temperature is 600 °C; the molar ratio of H₂O/C₂H₅OH is 5:1. In addition, the stable performance of LaNi_0.5Co_0.5O_3−δ under the optimal operating condition was examined. Under the optimal reaction conditions, ethanol conversion of LaNi_0.5Co_0.5O_3−δ perovskite as an ESR catalyst can reach the highest 90.2%. The results show that LaNi_0.5Co_0.5O_3−δ has excellent stability and catalytic activity.

实现高效稳定的制氢一直是业界关注的焦点，而乙醇蒸汽重整（ESR）是最可靠、可回收、廉价的技术之一。钙钛矿纳米复合催化剂 LaNi _x Co _{1 - x} O _{3- δ} ( x  = 0, 0.5, 0.9) 已通过 EDTA-柠檬酸络合溶胶-凝胶法制备，并用于通过 ESR 制氢。使用扫描电子显微镜 (SEM)、X 射线衍射 (XRD)、EDS 和 BET 来表征新鲜和还原的 LaNi _0.5 Co _0.5 O _{3- δ}的晶体结构。Ni掺杂LaNi ESR实验的最佳操作参数_x Co _{1 - x} O _{3- δ}钙钛矿进行了详细评估。结果表明ESR的最佳条件为：重整温度600℃；H ₂ O/C ₂ H ₅ OH的摩尔比为5:1。此外，还考察了 LaNi _0.5 Co _0.5 O _{3- δ}在最佳操作条件下的稳定性能。在最佳反应条件下，作为ESR催化剂的LaNi _0.5 Co _0.5 O _{3- δ}钙钛矿的乙醇转化率最高可达90.2%。结果表明，LaNi _0.5Co _0.5 O _{3- δ}具有优异的稳定性和催化活性。