Enhanced Fischer-Tropsch synthesis performance of iron-based catalysts supported on nitric acid treated N-doped CNTs

被引：37
作者：
Li, Zhenhua [1 ,2 ]
Liu, Renjie [1 ,2 ]
Xu, Yan [1 ,2 ]
Ma, Xinbin [1 ,2 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China
[2] Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 347卷
基金：
中国国家自然科学基金;
关键词：
Fischer-Tropsch synthesis; Iron based catalyst; N-doped CNTs; Nitric acid concentration; CARBON NANOTUBES; NITROGEN; NANOPARTICLES; SIZE; SELECTIVITY; ACTIVATION; PRECURSOR; HYDROGEN; SPHERES;
D O I：
10.1016/j.apsusc.2015.04.169
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：
Iron-based catalysts supported on N-doped CNTs (NCNTs) treated by various concentrations of nitric acid for Fischer-Tropsch synthesis (FTS) were investigated. An improved catalytic performance for the iron catalyst supported on acid treated NCNTs was obtained and the suitable nitric acid concentration was 10 M. The physiochemical properties of the NCNTs and the corresponding catalysts were characterized by BET, TEM, XRD, XPS, TGA and H-2-TPR. The acid treatment removed the impurity and amorphous carbon, damaged the bamboo-like structure and increased the number of oxygen-containing functional groups and graphitization degree on the NCNTs. The more iron particles located inside the channels of NCNTs, the better catalytic FTS performance due to high dispersion and reducibility. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：643 / 650
页数：8
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