Premium
High Catalytic Behavior of Activated Carbon‐Supported K‐Fe‐Ni Based Catalysts for 1,6‐Hexanedinitrile Hydrogenation under Mild Conditions
Author(s) -
Lv Yang,
Liu Pingle,
Hao Fang,
Xiong Wei,
Luo He'an
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201703158
Subject(s) - catalysis , nickel , inorganic chemistry , chemisorption , materials science , nanoparticle , sintering , adsorption , activated carbon , chemistry , nuclear chemistry , metallurgy , nanotechnology , organic chemistry
Activated carbon supported potassium and iron doped nickel‐based catalysts were prepared and characterized by XRD, chemisorption of H 2 , H 2 ‐TPR, XPS, N 2 adsorption‐desorption analysis, NH 3 ‐TPD, SEM, TEM, HRTEM and HAADF‐STEM. The catalytic behaviors were conducted on the hydrogenation of 1,6‐Hexanedinitrile to 6‐aminohexanenitrile and 1,6‐hexanediamine under 338 K‐358 K and 2 MPa hydrogen pressure. It can be deduced that the reducibility of the nickel oxide, the surface of the Ni 0+ content and the dispersibility of nickel nanoparticles can be significantly enhanced by doping a certain amount of iron as the results of the synergetic effect between nickel and iron. Moreover, the introduction of potassium not only can effectively increase the alkaline site of the catalyst so as to inhibit the formation of by‐products, but also improve the dispersion of nickel nanoparticles by suppressing the sintering effect. However, the addition of excessive potassium is unfavorable to the nickel oxide reduction. It can be seen that activated carbon supported potassium and iron doped nickel‐based catalyst gives better catalytic performance of 91.32% conversion of 1,6‐Hexanedinitrile and 91.82% selectivity to 6‐aminohexanenitrile and 1,6‐hexanediamine under mild conditions of 348 K and 2 MPa.