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Molecules 2018, 23(1), 92; doi:10.3390/molecules23010092

Supported Ni Catalyst for Liquid Phase Hydrogenation of Adiponitrile to 6-Aminocapronitrile and Hexamethyenediamine

Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
Author to whom correspondence should be addressed.
Received: 25 November 2017 / Revised: 20 December 2017 / Accepted: 30 December 2017 / Published: 4 January 2018
(This article belongs to the Special Issue Base Metal Catalysis and Green Synthesis)
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Supported Ni catalysts prepared under different conditions, for liquid phase hydrogenation of adiponitrile (ADN) to 6-aminocapronitrile (ACN) and hexamethyenediamine (HMD), were investigated. The highly reactive imine intermediate can form condensation byproducts with primary amine products (ACN and HMD), which decreased the yield coefficient of primary amines. The catalysts support, condition of catalyst preparation and dosage of additive were studied to improve the yield. A highly dispersed Ni/SiO2 catalyst prepared by the direct reduction of Ni(NO3)2/SiO2 suppressed the condensation reactions by promoting the hydrogenation of adsorbed imines, and it gave the improved hydrogenation activity of 0.63 mol·kgcat−1·min−1 and primary amine selectivity of 94% when NaOH was added into the reactor. View Full-Text
Keywords: supported Ni catalyst; adiponitrile hydrogenation; 6-aminocapronitrile; hexamethyenediamine supported Ni catalyst; adiponitrile hydrogenation; 6-aminocapronitrile; hexamethyenediamine

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Wang, C.; Jia, Z.; Zhen, B.; Han, M. Supported Ni Catalyst for Liquid Phase Hydrogenation of Adiponitrile to 6-Aminocapronitrile and Hexamethyenediamine. Molecules 2018, 23, 92.

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