在改的Ni/SiO2催化剂上选择性化二甲基甲基甲甲酸盐
Han Xiao1, Chao Zhang1, Jiaojiao Zhao2
1School of Chemical Engineering, Guizhou Minzu University Guiyang 550025 P. R. China.
RSC advances
|June 2, 2023
概括
非贵金属催化剂用化 (KF) 增强,用于选择性化二甲基甲甲酸盐 (DMT) 到1,4-环二碳酸盐 (DMCD). 这种修改实现了高选择性和转换性,为贵金属催化剂提供了具有成本效益的替代品.
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
- 有机化学 有机化学
背景情况:
- 选择性化二甲基甲甲酸盐 (DMT) 对于生产1,4-环二碳酸盐 (DMCD),一个关键单体至关重要.
- 贵金属催化剂 (如Ru,Pd) 是有效的,但成本高昂.
- 为这种反应开发非贵金属催化剂,如,仍然是一个重大挑战.
研究的目的:
- 研究化 (KF) 兴奋剂对DMT选择性化Ni/SiO2催化剂性能的影响.
- 通过使用具有成本效益的催化剂,实现DMCD生产的高选择性和转化.
主要方法:
- 用0.5%重量%KF的Ni/SiO2催化剂进行浸后注.
- 通过选择性化反应来表征催化剂特性和性能评估.
- 分析KF修饰对活性物种和表面酸度的影响.
主要成果:
- 基因化剂显著改善了Ni/SiO2催化剂的性能,将选择性从83%提高到96%,并将转换率从41%提高到95%.
- 在Ni基催化剂上达到高达97%的DMCD选择性记录.
- 由于KF的修改,Ni{0}物种增加,中度酸性部位减少.
结论:
- 化是提高DMT选择性化中的Ni/SiO2催化剂性能的有效促进剂.
- 性能改善归因于KF对催化剂电子特性和表面酸度的有益影响.
- 这项研究提出了使用非贵金属催化剂进行DMCD合成的有希望的,具有成本效益的方法.
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