A novel supported quaternary NiCuMgFe/Al2O3 catalyst for the synthesis of alkyl tertiary amines

被引:0
作者
Zhou, Tao [1 ]
Dai, Anqi [1 ]
Pan, Mingxi [1 ]
Kong, Jiangrong [1 ]
Zhou, Yonghua [1 ]
机构
[1] Cent S Univ, Coll Chem & Chem Engn, Hunan Prov Key Lab Efficient & Clean Utilizat Man, Changsha 410083, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
Alkyl-tertiary-amine; Catalyst; NiCuMgFe; Co-precipitation; Cu-0; ONE-STEP AMINATION; FATTY ALCOHOLS; DODECYL ALCOHOL; MG; HYDROGEN; STATE;
D O I
10.1007/s11144-018-1499-5
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The catalytic amination of aliphatic alcohols to manufacture alkyl tertiary amines is a promising process. In this paper, novel types of quaternary NiCuMgFe/Al2O3 and NiCuZnFe/Al2O3 catalysts were prepared via co-precipitation method and the performances were contrasted in details. With the optimum molar ratio n(Ni):n(Cu):n(Mg):n(Fe)=1.25:1:0.3:0.6, NiCuMgFe/Al2O3 catalyst delivered a N-propyldioctylamine (NPDA) yield of 94.3% and good recycling stability. In addition, NiCuMgFe/Al2O3 catalyst displayed the universality for several other types of alkyl tertiary amines. The characterizations of XRD, Raman, UV-vis-DR, XPS and H-2-TPR revealed that obvious synergistic effect between the promoters Mg and Fe occurred, and they significantly improved both the percentage of Cu-0 species and the dispersion of NiO active sites. As a result, the hydrogenation and dehydrogenation abilities of NiCuMgFe/Al2O3 catalyst were balanced towards a high conversion of alcohol and a high selectivity to tertiary amines.
引用
收藏
页码:283 / 294
页数:12
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