Effect of the support on physicochemical properties and catalytic performance of cobalt based nano-catalysts in Fischer-Tropsch reaction

被引：13
作者：
Ali, Sardar [1 ]
Zabidi, Noor Asmawati Mohd [2 ]
Al-Marri, Mohammed J. [1 ]
Khader, Mahmoud M. [1 ]
机构：
[1] Qatar Univ, Gas Proc Ctr, POB 2713, Doha, Qatar
[2] Univ Teknol PETRONAS, Centralized Analyt Lab, Tronoh 31750, Perak, Malaysia
来源：
MATERIALS TODAY COMMUNICATIONS | 2017年 / 10卷
关键词：
Cobalt; Support; Fischer-Tropsch reaction; CARBON NANOTUBES; EVOLUTION; LOADINGS; RU; CO;
D O I：
10.1016/j.mtcomm.2017.01.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, comparative investigations of the effects of CNTs and gamma-Al2O3 on the physicochemical properties and catalytic performances of Co based nano-catalyst during FTS have been presented. Catalysts were prepared via a wet impregnation method and characterized by various analytical techniques such as transmission electron microscopy (TEM), temperature programmed reduction (H-2-TPR), carbon dioxide temperature programmed desorption (CO2-TPD) and X-ray photoelectron spectroscopy (XPS). Fischer-Tropsch reaction (FTS) was carried out in a fixed-bed microreactor (220 degrees C and 1 atm and with H-2/CO = 2 v/v, SV of 12 L/g h). Various characterization techniques revealed that Co nanocatalysts supported on CNTs and Al2O3 were different in physicochemical properties. There was a stronger interaction between Co and Al2O3 support compared to that of CNTs support. CNTs support increased the reducibility, dispersion, active metal surface area and decreased Co particle size. A significant increase in% CO conversion and FTS reaction rate was also observed over CNTs support compared to that of Co/Al2O3. Co/CNTs resulted in higher C5+ hydrocarbons selectivity compared to that of Co/Al2O3 catalyst. (C) 2017 Elsevier Ltd. All rights reserved.
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页码：67 / 71
页数：5
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