期刊
RESEARCH ON CHEMICAL INTERMEDIATES
卷 42, 期 1, 页码 19-30出版社
SPRINGER
DOI: 10.1007/s11164-015-2334-5
关键词
Furfural; Reductive amination; Furfurylamine; Ru cluster; Aqueous ammonia solution
资金
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan [25420825, 25820392]
- Grants-in-Aid for Scientific Research [25420825] Funding Source: KAKEN
Poly(N-vinyl-2-pyrrolidone)-capped ruthenium-supported hydroxyapatite (Ru-PVP/HAP) shows significant activity for the synthesis of furfurylamine (FAM) via the reductive amination of furfural. As-prepared 5 wt% Ru-PVP/HAP affords 50 % yield of FAM in 25 % NH3 aqueous solution under pressurized H-2 gas (2.5 atm), and the highest yield approaches 60 % at 4.0 H-2 atm. Comparison between the activities over four Ru-supported HAP catalysts prepared with different methods and the results of X-ray absorption spectroscopy suggested that the metallic Ru cluster is the active center for the reductive amination of furfural. Transmission electron microscope and inductively-coupled plasma analysis indicated that the as-prepared 5 wt% Ru-PVP/HAP catalyst possessed 4.0 wt% PVP-capped Ru clusters with average diameter of 1.7 +/- A 0.3 nm on HAP support. It was also demonstrated that the reductive amination approach with Ru-PVP/HAP catalyst, NH3 aq. and pressurized H-2 gas has capability for transformation of aromatic aldehydes to the corresponding aromatic amines. According to these results, it is concluded that Ru(0) cluster supported on HAP will represent a suitable catalyst for widely-usable reductive amination to convert an aldehyde functionality towards an amine.
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