纳米石墨烯片和碳纳米管上的镍负载催化剂用于二氧化碳加氢反应

IF 5.2 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today Pub Date : 2025-07-07 DOI:10.1016/j.cattod.2025.115444

Jéssica Rabelo do Nascimento , Martin Schmal , Carlos Alberto Chagas Jr. , Raimundo Crisostomo Rabelo Neto , Braulio S. Archanjo , Amanda Garcez Veiga

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引用次数: 0

摘要

合成了以碳纳米管（Ni/NTC）、石墨烯纳米片（Ni/NPG）和二氧化硅（Ni/SiO₂）为载体的镍催化剂，并对其在CO₂甲烷化中的性能进行了评价。Ni/NTC在450 °C时表现出最高的CO₂转化率（59 %）和CH₄选择性（95.7 %），由于良好的Ni结晶度和分散性，优于其他载体。CH4的催化性能为Ni/NTC>；Ni/SiO2>Ni/NPG。镍纳米颗粒的结晶度、还原性和尺寸是导致催化性能差异的因素。

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Nickel-supported catalysts on nano-graphene platelets and carbon nanotubes for the carbon dioxide hydrogenation reaction

We synthesized nickel catalysts supported on carbon nanotubes (Ni/NTC), graphene nanoplatelets (Ni/NPG), and silica (Ni/SiO₂) and evaluated their performance in CO₂ methanation. Ni/NTC exhibited the highest CO₂ conversion (59 %) and CH₄ selectivity (95.7 %) at 450 °C, outperforming other supports due to favorable Ni crystallinity and dispersion.". The catalytic performance for CH₄ production was Ni/NTC>Ni/SiO₂>Ni/NPG. The crystallinity, reducibility, and size of Ni nanoparticles were the factors that contributed to the difference in catalytic performance.

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来源期刊

Catalysis Today 化学-工程：化工

CiteScore

11.50

自引率

3.80%

发文量

573

审稿时长

2.9 months

期刊介绍： Catalysis Today focuses on the rapid publication of original invited papers devoted to currently important topics in catalysis and related subjects. The journal only publishes special issues (Proposing a Catalysis Today Special Issue), each of which is supervised by Guest Editors who recruit individual papers and oversee the peer review process. Catalysis Today offers researchers in the field of catalysis in-depth overviews of topical issues. Both fundamental and applied aspects of catalysis are covered. Subjects such as catalysis of immobilized organometallic and biocatalytic systems are welcome. Subjects related to catalysis such as experimental techniques, adsorption, process technology, synthesis, in situ characterization, computational, theoretical modeling, imaging and others are included if there is a clear relationship to catalysis.