Ni-Co双金属尖晶石氧化物的光热催化甲烷干重整性能：协同效应与结构调控

熊丹; 白郅浩; 于守武; 孟宪光

doi:10.19976/j.cnki.43-1448/TF.2025080

粉末冶金材料科学与工程 >

2026 , Vol. 31 >Issue 3: 245 - 255

DOI: https://doi.org/10.19976/j.cnki.43-1448/TF.2025080

工艺技术

Ni-Co双金属尖晶石氧化物的光热催化甲烷干重整性能：协同效应与结构调控

熊丹 ,
白郅浩 ,
于守武 ,
孟宪光

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1.华北理工大学材料科学与工程学院,唐山 063210;
2.大湾区大学物质科学学院,东莞 523000

收稿日期: 2025-11-24

修回日期: 2026-03-15

网络出版日期: 2026-07-03

基金资助

大学生创新创业训练计划(X2024156)

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Photothermal catalytic dry reforming performance of methane over Ni-Co bimetallic spinel oxides: synergistic effects and structural tuning

XIONG Dan ,
BAI Zhihao ,
YU Shouwu ,
MENG Xianguang

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1. College of Materials Science and Engineering, North China University of Science and Technology, Tangshan 063210, China;
2. School of Physical Sciences, Great Bay University, Dongguan 523000, China

Received date: 2025-11-24

Revised date: 2026-03-15

Online published: 2026-07-03

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摘要

光热催化甲烷干重整是一种利用太阳能驱动温室气体CH₄和CO₂转化为合成气(H₂和CO)的高效途径。本研究采用共沉淀法合成了一系列不同Ni/Co物质的量比的Ni_xCo_yMgAlO (x=1、0.9、0.8、0.7、0.6、0.5,y=0、0.1、0.2、0.3、0.4、0.5)尖晶石氧化物催化剂,通过SEM、EDS、XRD及XPS等表征手段系统分析了催化剂的晶体结构、氧空位浓度、微观形貌及氧化还原性能,并评价了其光热催化甲烷干重整的活性与稳定性,考察了Ni/Co比例对催化性能的影响。结果表明：性能最优的Ni_0.5Co_0.5MgAlO催化剂光热催化CH₄和CO₂的转化率分别达59.6%和65.3%。Co掺杂可有效调控催化剂的比表面积、氧空位浓度以及金属-载体相互作用,提高催化活性和抗积碳能力;同时,Ni-Co协同效应可增强电子转移能力,提高催化剂的氧化还原能力,促进氧物种循环,优化CH₄和CO₂的活化过程,进一步提升光热催化性能。

关键词： 甲烷; 二氧化碳; 干重整; 光热催化; Ni-Co双金属; 尖晶石氧化物

本文引用格式

熊丹 , 白郅浩 , 于守武 , 孟宪光 . Ni-Co双金属尖晶石氧化物的光热催化甲烷干重整性能：协同效应与结构调控[J]. 粉末冶金材料科学与工程, 2026 , 31(3) : 245 -255 . DOI: 10.19976/j.cnki.43-1448/TF.2025080

Abstract

Photothermal catalytic dry reforming of methane represents an efficient route for utilizing solar energy to drive the conversion of greenhouse gases CH₄ and CO₂ into syngas (H₂ and CO). In this work, a series of Ni_xCo_yMgAlO (x=1, 0.9, 0.8, 0.7, 0.6, 0.5; y=0, 0.1, 0.2, 0.3, 0.4, 0.5) spinel oxide catalysts with varying Ni/Co molar ratios were synthesized via a co-precipitation method. The crystalline structure, oxygen vacancy concentration, micro-morphology, and redox properties of the catalysts were systematically analyzed by characterization methods such as SEM, EDS, XRD, and XPS. Their photothermal catalytic activity and stability in dry reforming of methane were evaluated, investigating the effect of the Ni/Co ratio on catalytic performance. The results indicate that the Ni_0.5Co_0.5MgAlO catalyst exhibits optimal performance, achieving CH₄ and CO₂ conversions of 59.6% and 65.3%, respectively, under photothermal conditions. Co doping effectively modulates the specific surface area, oxygen vacancy concentration, and metal-support interaction, leading to improved catalytic activity and enhanced resistance to carbon deposition. The synergistic effect between Ni and Co can facilitate electron transfer, strengthen the redox capability, promote oxygen species cycling, and optimize the activation of CH₄ and CO₂, thereby further enhancing the photothermal catalytic performance.

Key words： methane; carbon dioxide; dry reforming; photothermal catalysis; Ni-Co bimetallic; spinel oxide

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