Effects of Cobalt Loading, Particle Size, and Calcination Condition on Co/CNT Catalyst Performance in Fischer–Tropsch Reactions

Symmetry

卷:11

ZairaZaman Chowdhury¹  NoorAsmawati Mohd Zabidi¹  Md Shalauddin¹  Marlinda Ab Rahman¹  Yasmin Abdul Wahab²  MohdRafie Johan²  NorAliya Hamizi³  ZulkifliMerican Aljunid Merican³  Omid Akbarzadeh³  Shamima Akhter³ 

[1] Catalysis Research Centre, University of Malaya, Kuala Lumpur 50603, Malaysia;

[2] Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak, Malaysia;

[3] Nanotechnology &

关键词: carbon nanotubes;    Fischer–Tropsch;    thermal treatment;    cobalt;    catalyst;    acid treatment;   

DOI  :  10.3390/sym11010007

来源: DOAJ

【 摘 要 】

The strong electrostatic adsorption (SEA) method was applied to the synthesis of a cobalt (Co) catalyst on a multi-walled carbon nanotube (CNT) support. In order to uptake more of the cobalt cluster with higher dispersion, the CNT was functionalized via acid and thermal treatment. The Co/CNT catalyst samples were characterized by a range of methods including the Brunauer–Emmet–Teller (BET) surface area analyzer, transmission electron microscopy (TEM), X-ray powder diffraction (XRD) analysis, atomic absorption spectroscopy (AAS), and H2-temperature programmed reduction (H2-TPR) analysis. The data from the TEM images revealed that the catalyst was highly dispersed over the external and internal walls of the CNT and that it demonstrated a narrow particle size of 6–8 nm. In addition, the data from the H2-TPR studies showed a lower reduction temperature (420 °C) for the pre-treated catalyst samples. Furthermore, a Fischer–Tropsch synthesis (FTS) reaction was chosen to evaluate the Co/CNT catalyst performance by using a fixed-bed microreactor at different parameters. Finally finding the optimum value of the cobalt loading percentage, particle size, and calcination conditions of Co/CNT catalyst resulted in a CO conversion and C5+ selectivity of 58.7% and 83.2%, respectively.

【 授权许可】

Unknown