Ni/SiO2植物油化催化剂的结构工程通过CeO2
Margarita Gabrovska1, Dimitrinka Nikolova1, Vojkan Radonjić2
1Institute of Catalysis, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria.
International journal of molecular sciences
|July 27, 2024
概括
将二氧化 (CeO2) 添加到-// (MgNi/SiO2) 催化剂中,可以增强植物油的化. 这种修改改善了特定脂肪酸的催化剂活性和选择性,优化了过程.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 基于的催化剂对于植物油化至关重要.
- 提高这些催化剂的活性和选择性是一个持续的挑战.
- (CeO2) 修改提供了一种新的方法来提高Ni/SiO2催化剂的性能.
研究的目的:
- 调查二氧化 (CeO2) 修改对植物油化MgNi/SiO2催化剂性能的影响.
- 探索CeO2如何影响催化剂结构,可还原性和表面特性.
- 确定CeO2对化活性和对特定脂肪酸的选择性的影响.
主要方法:
- 合成CeO2添加剂的MgNi/SiO2催化剂.
- 使用粉末X射线衍射 (PXRD),SEM-EDS,XPS,HRTEM,H2-TPR和H2-化学吸收进行表征.
- 植物油化中的催化剂性能评估,分析脂肪酸组成,的目标值为80.
主要成果:
- 观察到金属Ni颗粒在CeO2-修改表面的均分布和稳定.
- CeO2修改改变了对C18:1-cis和C18:0脂肪酸的催化剂选择性.
- 作为催化剂补充剂添加Ceria提高了化活性,而作为载体修饰剂,它提高了选择性.
结论:
- 使用1%重量CeO2的结构重建有效调整了Ni基催化剂的化性能.
- 作为载体修饰剂或催化剂剂的Ceria的作用显著影响植物油化中的选择性和活性.
- 本研究提出了一种新的方法,用于设计高效的Ni/SiO2催化剂,用于植物油的部分化.
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