由单原子催化剂启用的基和基的区域选择性多元化和化
Paweł Huninik1,2, Priti Sharma3,4, Vitthal B Saptal1
1Center for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, Poznań 61-614, Poland.
ACS catalysis
|October 23, 2025
概括
在石墨碳化物上的新单原子催化剂 (Pt-SAC) 通过二氧化和氧化有效合成有机化合物. 这种强大的催化剂在温和条件下运行,为各种应用提供高产量和选择性.
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
- 有机合成 有机合成
背景情况:
- 基和基的选择性多钻和钻在有机合成中至关重要,但面临诸如区域选择性,功能组耐受性和催化剂稳定性等挑战.
- 主要使用的是均质的催化剂,通常需要恶劣的条件并限制可扩展性.
- 在温和条件下开发高效的异质催化剂用于这些转化是非常理想的.
研究的目的:
- 开发一种异质单原子催化剂 (Pt-SAC) 的可扩展合成,用于挑战有机转换.
- 为了研究Pt-SAC的催化活性,选择性和稳定性,用于二氧化和氧化反应.
- 通过计算研究阐明增强反应性的机制.
主要方法:
- 使用微波辅助方法,在超薄的石墨碳化物纳米板上支持Pt-SAC的可扩展合成.
- 用B2pin2.2.2进行Pt-SAC的催化评价,用于1,2-diboration的固体阻碍基和1,2,2-triboration的基使用B2pin2.2.
- 对基和基的区域选择性化进行评估.
- 计算计算 (DFT) 了解反应机制和激活能量障碍.
- 在多个反应周期中进行可回收性测试.
主要成果:
- 在温和条件下,Pt-SAC能够在高产量和选择性下进行1,2-diboration的固体阻碍基和1,2,2-triboration的基.
- 对于 styrene 二酸化,催化剂实现了99%的产量和95%的选择性,周转率 (TON) 为3711和周转频率 (TOF) 为247小时-1.1.
- 成功地促进了基和基的区域选择性反马尔科夫尼科夫化,产生了基和乙烯.
- 计算研究表明,由于在Pt-SAC上吸附而削弱的C=C和B-H键显著降低了激活能量障碍.
- Pt-SAC表现出卓越的稳定性和可回收性,在8次运行中保持性能,没有检测到的泄漏.
结论:
- 在石墨碳化物上支持的Pt-SAC是一种高效和稳定的异质催化剂,用于选择性二氧化和氧化反应.
- 催化剂在温和条件下运行,提供高效率和选择性,使其适合复杂的有机合成.
- 这项工作将Pt-SAC作为一种用于有机化学的多功能平台,在药品,农业化学品和聚合物合成中具有潜在的应用.
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