Catalytic Transfer Hydrogenation of Furfural to Furfuryl Alcohol by using Ultrasmall Rh Nanoparticles Embedded on Diamine-Functionalized KIT-6
作者:Chinna Krishna Prasad Neeli、Young-Min Chung、Wha-Seung Ahn
DOI:10.1002/cctc.201701037
日期:2017.12.20
KIT‐6. A plausible reaction mechanism was proposed after examining an independent FA decomposition reaction over the same Rh‐ED‐KIT‐6 catalyst. The heterogeneity of the catalyst was verified by a hot filtration experiment. The Rh/ED‐KIT‐6 could be reused for up to three cycles without any decrease in catalytic activity and selectivity, but the slow oxidation of Rh species was detected.
Rh 3+合成了Rh / ED-KIT-6催化剂,该催化剂由嵌入在用N1- [3-(三甲氧基甲硅烷基)丙基] 1,2-二胺官能化的介孔二氧化硅(KIT-6)上的Rh纳米颗粒组成。液相中的吸附和化学还原。通过各种分析方法检查了ED‐KIT-6的结构以及原始和负载型Rh催化剂的质构性质,以及Rh物种的粒径和化学状态。证实了通过接枝二胺(ED)物种稳定的尺寸约为1.2 nm的超小Rh纳米颗粒的均匀分散。通过使用甲酸(FA)作为氢源,将Rh / ED‐KIT-6应用于糠醛(FFR)到糠醇(FAL)的转移加氢中。研究了溶剂和反应参数(例如温度,反应时间和FA / FFR比)的影响。嵌入Rh的催化剂表现出很高的周转频率(TOF≈204h -1)与KIT-6上的Ru,Pd或Ni基催化剂相比)。在研究了相同Rh-ED-KIT-6催化剂上独立的FA分解反应后,提出了合理的反应机理。通过热过滤实验验证了催化剂的非均质性。Rh