和铜修饰对Pd/ZnO催化剂在液相化和光催化演变中的性能的影响
Alima M Kenzheyeva1,2, Alima K Zharmagambetova1, Eldar T Talgatov1
1Laboratory of Organic Catalysis, D.V. Sokolskiy Institute of Fuel, Catalysis, and Electrochemistry, Kunaev Str. 142, Almaty 050010, Kazakhstan.
Molecules (Basel, Switzerland)
|September 27, 2025
概括
素修饰增强了氧化物 (Pd/ZnO) 催化剂上的,用于化和进化. 在这些双催化应用中,Pd-Pec/ZnO具有较低的pectin含量 (1.8 wt%) 显示出卓越的性能和稳定性.
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:
- 开发高效的催化剂用于化和光催化进化是至关重要的.
- 氧化 (ZnO) 作为催化应用的多功能支持.
- 生物聚合物修饰提供了一条调整催化剂性能的途径.
研究的目的:
- 为了研究点丁和铜对Pd/ZnO催化剂性能的影响.
- 评估2-hexyn-1-ol液相化中的催化剂和光催化的演化.
- 了解点和铜在改变催化活性中的作用.
主要方法:
- 通过顺序吸附合成Pd/ZnO,Pd-Pec/ZnO和PdCu-Pec/ZnO催化剂.
- 使用TGA,EDX,IR,XRD,TEM,UV-Vis DRS和XPS进行表征.
- 在化和光催化演化反应中测试催化活性.
主要成果:
- 素修饰改善了Pd纳米粒子的分布,并增强了催化活性.
- 由于Pd-Cu相互作用,添加铜对催化性能产生了负面影响.
- 在这两种反应中,Pd-Pec/ZnO (1.8%重量%的pectin) 具有最高的活性,选择性 (96%) 和稳定性.
- 光催化演化速率达到1.11 mmol/h·g_cat) 的持续活动.
结论:
- 生物聚合物修饰的ZnO复合物显示出对多功能催化剂的希望.
- 素的结合有利于增强Pd/ZnO的催化性能.
- Pd-Pec/ZnO催化剂为化和光催化提供了一个稳定高效的平台.
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