Insight into decomposition of formic acid to syngas required for Rh-catalyzed hydroformylation of olefins
作者:Lei Liu、Xiao-Chao Chen、Shu-Qing Yang、Yin-Qing Yao、Yong Lu、Ye Liu
DOI:10.1016/j.jcat.2020.09.039
日期:2021.2
to transport H2 via dehydrogenation or CO via decarbonylation. Expectantly, FA upon decomposition into H2 and CO could be used as the syngas alternative for hydroformylation. In this paper, the behaviors of FA to release H2 as well as CO following the distinct pathways were carefully investigated for the first time, and then established a new hydroformylation protocol free of syngas. It was found that
甲酸(FA)是一种重要的散装化学品,被公认为是可持续和生态友好的能源载体,可通过脱氢运输H 2或通过脱羰基运输CO。预期,分解成H 2和CO时的FA可用作加氢甲酰化的合成气替代品。本文首次仔细研究了FA遵循不同途径释放H 2和CO的行为,然后建立了不含合成气的新的加氢甲酰化方案。据发现,用甲酸(FA)合成气altrnative顺利完成以上的Xantphos(烯烃的加氢甲酰化大气L1)改性温和的条件下的Rh催化剂(80 öC,Rh浓度为1 mol%,14 h),导致烯烃转化率> 90%,同时对目标醛的选择性高(> 93%)。通过使用FA作为合成气源,大大降低了烯烃加氢的副反应。应用原位FT-IR和高压1 H NMR光谱分析揭示FA在L1- Rh(acac)(CO)2催化体系中作为CO替代和氢源的双重行为。研究了以FA为合成气替代品的烯烃加氢甲酰化反应机理。