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Pd-CeO₂催化剂很容易从一个生成的Pd@Ce-BTC中获得,用于低温CO氧化

Shaohua Xie¹, Wei Tan², Yuhan Xu³

¹Department of Civil, Environmental, and Construction Engineering, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), NanoScience Technology Center (NSTC), University of Central Florida, Orlando, FL 32816, United States.

Journal of hazardous materials

|February 3, 2024

概括

一种新的单方法合成了Pd@Ce-BTC催化剂,显著增强了CO氧化. 这些催化剂,特别是当在N2中化时,由于丰富的Ce3+和氧物种,显示出优越的活性.

科学领域:

环境催化剂的作用
材料科学是一种材料科学.
纳米技术纳米技术

背景情况:

金属有机框架 (MOF) 为环境应用提供了丰富的催化场所.
开发高效和环保的MOF制备方法对于工业用途至关重要.
制备MOF基催化剂的传统方法可能复杂且效率较低.

研究的目的:

开发一种在Ce-BTC (Pd@Ce-BTC) 支持的的新型单合成方法.
将Pd@Ce-BTC的催化活性与传统的Pd/Ce-BTC催化剂用于CO氧化进行比较.
调查新型催化剂增强的催化性能背后的原因.

主要方法:

使用单溶热方法合成Pd@Ce-BTC.
催化剂在不同的大气层 (N2或空气) 下被烧化.
评估了CO氧化催化活性,并对材料进行了表征.

主要成果:

Pd@Ce-BTC衍生催化剂的CO氧化活性明显高于Pd/Ce-BTC催化剂.
在N2流中化的催化剂 (Pd@Ce-BTC-N) 与在空气中化的催化剂相比,表现出更高的CO氧化性能.
增强的活性归因于丰富的表面Ce3+物种,丰富的吸附氧气和优越的氧化还原特性.

结论:

一溶热法为制备高活性MOF基催化剂提供了有效的途径.
Pd@Ce-BTC催化剂,特别是当在N2中被烧化时,显示出对环境催化,特别是CO氧化有很好的潜力.
了解表面特性和氧化还原行为是优化MOF催化剂设计的关键.

关键词:

在CO氧化过程中,CO的氧化.这就是Ce-BTC.一个的溶热方法.帕拉催化剂的使用方法表面 Ce(3+) 的物种.

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