同金属 ((II) 复合物催化选择性转移化在水中的化物
Gopal Deshmukh1, Thakur Rochak Kumar Rana1, Gopalan Rajaraman1
1Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.
在水中的化学选择性转移化 (TH) 是使用新型同金属 (Ru) 催化剂实现的. 这些催化剂表现出高效率,选择性和可回收性,可减少化物,提供可持续的催化方法.
科学领域:
- 有机金属化学 有机金属化学
- 催化剂是一种催化剂.
- 绿色化学 绿色化学
背景情况:
- 转移化 (TH) 是减少化物到酒精的关键反应.
- 开发高效和选择性的TH催化剂,特别是在水性介质中,仍然是一个重大挑战.
- 同金属复合物通过合作效应提供了通过合作效应增强催化活性的潜力.
研究的目的:
- 报告在水性介质中化物的化学选择性转移化 (TH).
- 调查新型同金属Ru(II) 催化剂对化物减少的疗效.
- 为了比较双金属和单金属Ru催化剂的性能,并阐明机制.
主要方法:
- 同类金属Ru (II) 复合物的合成和表征,包括[p-cymene]2[RuCl]2L3] (Ru3).
- 催化转移化各种化物使用酸/甲酸缓冲器作为化物来源.
- 使用密度函数理论 (DFT) 计算,核磁共振 (NMR) 和电喷离子质谱法 (ESI-MS) 的机械研究.
主要成果:
- 使用Ru1和Ru3催化剂,低催化剂负荷 (0.01mol%) 的高效和化学选择性降解化物到酒精.
- 5.5×10^5 h^-1的异常周转频率 (TOF) 用0.0001 mol% Ru1催化剂实现.
- 催化剂可连续六个周期循环回收,而不损失效率;DFT和光谱研究表明,合作效应增强了催化活性.
结论:
- 同金属Ru (II) 催化剂能够在水性介质中有效和选择性地转移化化.
- 开发的方法在其他可还原的功能群的存在下有效降低化物.
- 双金属复合物的合作效应显著提高了催化效率,提供了可持续和可回收的催化系统.
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