中南大学
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返回首页Nickel-rich NiCeLaFeCo medium-entropy alloy nanoparticles on oxygen and nitrogen co-doped carbon supports for hydrogen production from toluene cracking
发布时间：2024-09-30
点击次数：
- DOI码：
- 10.1016/j.jallcom.2022.163935
- 所属单位：
- 中南大学
- 发表刊物：
- Journal of Alloys and Compounds
- 关键字：
- Hydrogen generation; Medium-entropy alloy; Nanoparticles; Steam reforming; Toluene cracking
- 摘要：
- Multi-metallic nanoparticles (MMNPs) attract people's attention due to their great potential in the application of energy storage, medicine, and catalysis. In this study, a simple in situ reduction method was developed to synthesize the NiCeLaFeCo and NiCeLaFeCu medium-entropy alloy (MEA) nanoparticles on nitrogen and oxygen co-doped carbon supports, with guanine and transition metal nitrates as the precursors. The prepared face-centered cubic (FCC) NiCeLaFeCo MEA nanoparticles have small particle sizes (average 21.1 nm) and medium mixing entropy (1.31 R). To extend the application of MEA nanoparticles, we have conducted a toluene cracking test regarding toluene conversion and hydrogen generation. The catalyst loaded with nickel-rich (~55.26%) MEA nanoparticles presented a high catalytic performance (over 80% conversion and 7293 ppm hydrogen generation) at 500 °C upon 2 h time-on-stream, and better catalytic performance (99% conversion and 78960 ppm hydrogen generation) at 400 °C with steam reforming. This study has provided a simple and convenient way to synthesize the functionalized carbon-based multi-metallic nanoparticles, and showed their excellent catalytic performance in the toluene cracking and hydrogen generation.
- 论文类型：
- 期刊论文
- 论文编号：
- 163935
- 卷号：
- 903
- ISSN号：
- 09258388
- 是否译文：
- 否
- 发表时间：
- 2022-05-15
- 收录刊物：
- SCI