Heterogeneous Ni Catalyst for Direct Synthesis of Primary Amines from Alcohols and Ammonia

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• 作者：Ken-ichi Shimizu ; Kenichi Kon ; Wataru Onodera ; Hiroshi Yamazaki ; Junko N. Kondo
• 刊名：ACS Catalysis
• 出版年：2013
• 出版时间：January 4, 2013
• 年：2013
• 卷：3
• 期：1
• 页码：112-117
• 全文大小：347K
• 年卷期：v.3,no.1(January 4, 2013)
• ISSN：2155-5435

文摘

This paper reports the synthesis of primary amines from alcohols and NH₃ by an Al₂O₃-supported Ni nanoparticle catalyst as the first example of heterogeneous and noble-metal-free catalytic system for this reaction without additional hydrogen sources under relatively mild conditions. Various aliphatic alcohols are tolerated, and turnover numbers were higher than those of Ru-based homogeneous catalysts. The catalyst was recoverable and was reused. The effects of the Ni oxidation states and the acid鈥揵ase nature of support oxides on the catalytic activity are studied. It is clarified that the surface metallic Ni sites are the catalytically active species, and the copresence of acidic and basic sites on the support surface is also indispensable for this catalytic system.

Keywords:

alcohols; amines; ammonia; heterogeneous catalysis; nickel