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在以为基础的支持催化活性液体金属溶液上干燥改制甲

Moritz Wolf^1,2, Ana Luiza de Oliveira^1,2, Nicola Taccardi¹

¹Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik (CRT), Egerlandstr. 3, 91058, Erlangen, Germany.

Communications chemistry

|October 18, 2023

概括

富含的支持催化活性液体金属溶液 (SCALMS) 对甲的干重制有前途,Ga-Ni SCALMS通过氧化还原过程保持活性. 然而,的出水限制了长期稳定性.

科学领域:

不同质的催化剂.
材料科学是一种材料科学.
化学工程是化学工程的组成部分.

背景情况:

支持的催化活性液体金属溶液 (SCALMS) 为单原子催化提供了一种新的方法.
之前的研究表明,SCALMS在使用贵金属合金的基脱过程中对焦化具有抗性.

研究的目的:

调查SCALMS与非贵金属 (Co,Cu,Fe,Ni) 在甲干改造 (DRM) 中的催化应用.
评估SCALMS在高温和氧化反应环境中的性能.

主要方法:

在DRM中用各种非贵金属进行SCALMS的实验测试.
密度功能理论 (DFT) 基于初始分子动力学 (AIMD) 模拟来分析表面行为.
评估催化剂的稳定性,活性和焦炭形成.

主要成果:

Ga-Ni SCALMS在DRM中表现出保留的活性,与大多数其他测试的催化剂不同,这些催化剂会氧化.
活动归因于一种动力控制的氧化还原过程,涉及氧化和Ni的再减少.
增加的Ni度抑制了焦炭的形成.
AIMD模拟证实了液合金-气体接口的增强Ni可用性.

结论:

由于自再生的氧化还原机制,Ga-Ni SCALMS显示了DRM的潜力.
氧化还原过程可以通过Ni度调节,以减轻焦化.
通过挥发性氧化物出水对DRM中长期的SCALMS应用提出了关键的不稳定性问题.

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