基于MOF的异质催化在连续流中通过将其纳入基于聚合物的球形活性碳支器
Anthony Griffiths1, Sarah L Boyall1, Pia Müller1
1Institute of Process Research and Development, School of Chemistry, University of Leeds, Leeds, UK. t.w.chamberlain@leeds.ac.uk.
Nanoscale
|October 30, 2023
概括
研究人员开发了一种新的复合催化剂,通过将金属有机框架 (MOF) 固定在球形活性炭上. 这项创新使大规模化学过程的高效连续流异质催化成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 催化剂是一种催化剂.
背景情况:
- 复杂的纳米材料具有可调节的催化性能,但通常以不适合工业应用的形式存在 (例如,粉末).
- 连续流异质催化需要强大的,可扩展的催化剂支.
研究的目的:
- 开发一种复合异质催化剂,将纳米材料与可扩展支用于连续流应用.
- 为了使金属有机框架 (MOFs) 在大型化学工艺中使用.
主要方法:
- 合成了一种复合催化剂,使用MIL-100(Sc) (一种基于MOF的易斯酸) 在聚合物基球形活性碳 (PBSAC) 上固定.
- 鉴定包括FIB-SEM,XRD,N2吸附,TGA,AAS,光散射和压力测试等技术.
- 在连续流系统中评估了催化活性,使用 (±) - citronellal的分子内循环作为模型反应.
主要成果:
- 复合材料呈现出机械强的球形几何形状,适合于包装式反应堆.
- 催化剂在稳定状态下运行了9个小时,没有活动损失.
- 证明了作为连续流中的易斯酸催化剂的成功应用.
结论:
- 这项工作提出了一种可行的方法,用于将MOF基催化剂集成到连续流异质过程中.
- 开发的复合催化剂克服了基于粉末的纳米材料的局限性,以实现工业可扩展性.
- 这项研究为MOF基催化剂在化学制造中的更广泛应用铺平了道路.
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