期刊
JOURNAL OF CATALYSIS
卷 356, 期 -, 页码 133-146出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2017.08.015
关键词
n-Octanol; Ammonia; Direct amination; CeO2-Al2O3; Nickel
资金
- French Agency of Research (ANR) through the SHAPes program [13-CDII-0004-06]
- French National Research Agency (ANR) [ANR-11-EQPX-0037]
- Chevreul Institute [FR2638]
- Ministere de l'Enseignement Superieur et de la Recherche
- FEDER
- Region Nord - Pas de Calais
The present study focuses on the selective synthesis of primary amines from aliphatic alcohols and ammonia using alumina-ceria supported nickel formulations based on very low nickel loading (<= 2 wt%) and without any additive or external H-2 supply. The effect of the catalyst preparation methods and modes of nickel impregnation were studied in detail and comprehensively characterized. The best formulation afforded 80% n-octanol conversion with 78% selectivity to n-octylamine at optimized reaction conditions, which were far better than control catalysts and benchmark Ni-alumina formulations relying on high Ni loadings. The enhanced activities of the alumina-ceria supported nickel catalysts was attributed to three combined effects: (1) a higher reducibility of surface nickel oxide species, (2) the genesis of very small and homogeneously distributed nickel nanoparticles (2-3 nm), and (3) a strong decline in the formation of nickel aluminates. Furthermore, unlike benchmark Ni catalysts, these formulations afforded a higher resistance to leaching. (C) 2017 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据