Effect of Oxygen Spillover on Stable Ni3Fe1 Alloy for High-Performance Dry Reforming of Methane

IF 3.8 3区工程技术 Q2 ENGINEERING, CHEMICAL

Industrial & Engineering Chemistry Research Pub Date : 2025-04-01 DOI:10.1021/acs.iecr.4c04958

Yubin Li, Yuxin Kang, Antai Kang, Xiangyang Liu, Sha Li, Li Qiu, Weimin Zhang, Ruifeng Li, Xiaoliang Yan

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引用次数: 0

Abstract

Ni–Fe alloy catalysts represent promising alternatives for dry reforming of methane (DRM). However, the strong affinity of Fe for oxygen caused progressive Fe segregation on the alloy, leading to a decline in catalytic properties. Herein, we explored an efficient approach to create highly dispersed CeO₂ clusters on an Al₂O₃ support for anchoring the stable Ni₃Fe₁ alloy using the oxygen spillover effect. CH₄ and CO₂ conversions as well as the H₂/CO ratio were maintained at 73.7%, 81.6%, and 0.87 at 700 °C, respectively, on the optimal Ni₃Fe₁/1CeO₂–16Al₂O₃. This catalyst featured plentiful oxygen vacancies, strong interactions between the metal and support, and moderate CO₂ activation centers. These collective effects enable the oxygen spillover from FeO_x toward the proximate vacancies on CeO₂. These oxygen species were consumed along with the generation of vacancies by carbon species. The oxygen spillover effect could not only stabilize the alloy structures but alleviate carbon deposition in DRM.

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来源期刊

Industrial & Engineering Chemistry Research 工程技术-工程：化工

CiteScore

7.40

自引率

7.10%

发文量

1467

审稿时长

2.8 months

期刊介绍： ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.