二氧化碳重整
甲烷
二氧化碳
镧
氧化物
催化作用
碳纤维
二氧化碳电化学还原
化学
镍
温室气体
活性炭
离解(化学)
无机化学
合成气
材料科学
化学工程
一氧化碳
有机化学
吸附
复合数
复合材料
生态学
工程类
生物
作者
Wei Zhao,Xueyi Mei,Yexin Zhang,Zhenghui Zhang,Kai Chen,Weiping Xie,Ying Xin,Zhaoliang Zhang,Jian Zhang
出处
期刊:Science Advances
[American Association for the Advancement of Science]
日期:2025-07-11
卷期号:11 (28)
标识
DOI:10.1126/sciadv.adv1585
摘要
Dry reforming of methane (DRM) offers an attractive solution for the high-value utilization of two primary greenhouse gasses, methane and carbon dioxide, but its industrial applications are hindered by the net carbon dioxide–positive emissions resulting from substantial energy consumption. Here, we developed an electrified technology by passing electric current through a conductive catalyst constituting nickel and lanthanum(III) oxide cosupported on activated carbons, reaching thermodynamic equilibrium conversions and sustaining for at least 120 hours. Notably, the energy efficiency (2.976 millimoles per kilojoule) exceeds all the previously reported values, enabling net carbon dioxide–negative emissions powered by common sustainable electricity. An electrically driven release of lattice oxygen bridges the decomposition of the lanthanum oxycarbonate intermediate generated from carbon dioxide activation and the reduction of the resultant nickel oxide species by deposited carbon from methane dissociation, thus inhibiting excessive nickel oxidation and lanthanum(III) oxide carbonatation. The electrified approach would make DRM a true pathway mitigating overall carbon footprint and combating global warming.
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