单个Mo原子稳定在高的矿氧化物上:空气氧化氧化脱硫的前沿
Jixing Liu1,2, Chang Deng1, Xiangqi Liu3
1School of Chemistry and Chemical Engineering, Institution for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China.
Inorganic chemistry
|July 6, 2023
概括
在高氧化 (HEPO) 上支持的新型单原子催化剂显示出异常稳定性和活性,用于去除二二. 这一突破为超深氧化脱硫提供了一个有希望的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 纳米技术 纳米技术
背景情况:
- 不同质的催化需要具有高稳定性和暴露活性位点的催化剂,这是一个挑战.
- 氧化脱硫对于深度提炼燃料至关重要.
研究的目的:
- 设计和合成一个稳定的单原子催化剂,具有最大的活性点暴露.
- 为了研究催化剂在超深氧化脱硫过程中的性能.
主要方法:
- 使用牺牲模板策略来制备高氧化 (HEPO).
- 使用石墨烯氧化物和金属前体,利用静电相互作用来防止化过程中的纳米粒子聚合.
- 原子分散的Mo6+被定在HEPO的缺陷部位上,创建了一个单原子催化剂 (Mo/HEPO-SAC).
主要成果:
- /HEPO-SAC催化剂表现出丰富的中孔结构和丰富的氧气空缺.
- 催化剂表现出强大的循环稳定性和超高的氧化活性,用于去除二西欧芬.
- 实现的周转频率为3.28 × 10^-2,超过了现有的氧化脱硫催化剂.
结论:
- 在HEPO上开发的单原子催化剂在超深氧化脱硫方面表现出卓越的性能.
- 这项工作扩大了单原子Mo支持的HEPO材料在燃料精炼中的应用.
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