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Catalysts 2016, 6(5), 63; doi:10.3390/catal6050063

Nickel Catalyzed Conversion of Cyclohexanol into Cyclohexylamine in Water and Low Boiling Point Solvents

1
Key Laboratory of materials Science and Processing of Anhui Province, School of Materials Science and Engineering, Anhui University of Technology, Ma’anshan 243002, Anhui, China
2
Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
*
Author to whom correspondence should be addressed.
Academic Editor: Keith Hohn
Received: 18 January 2016 / Revised: 30 March 2016 / Accepted: 31 March 2016 / Published: 26 April 2016
View Full-Text   |   Download PDF [2548 KB, uploaded 26 April 2016]   |  

Abstract

Nickel is found to demonstrate high performance in the amination of cyclohexanol into cyclohexylamine in water and two solvents with low boiling points: tetrahydrofuran and cyclohexane. Three catalysts, Raney Ni, Ni/Al2O3 and Ni/C, were investigated and it is found that the base, hydrogen, the solvents and the support will affect the activity of the catalyst. In water, all the three catalysts achieved over 85% conversion and 90% cyclohexylamine selectivity in the presence of base and hydrogen at a high temperature. In tetrahydrofuran and cyclohexane, Ni/Al2O3 exhibits better activity than Ni/C under optimal conditions. Ni/C was stable during recycling in aqueous ammonia, while Ni/Al2O3 was not due to the formation of AlO(OH). View Full-Text
Keywords: nickel; cyclohexanol; cyclohexylamine; base; hydrogen nickel; cyclohexanol; cyclohexylamine; base; hydrogen
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MDPI and ACS Style

Qi, Y.; Yu, H.; Cao, Q.; Dong, B.; Mu, X.; Mao, A. Nickel Catalyzed Conversion of Cyclohexanol into Cyclohexylamine in Water and Low Boiling Point Solvents. Catalysts 2016, 6, 63.

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