Synthesis and Characterization of Fe-Co/meso-HZSM-5: Effect of Impregnated Ratio of Iron and Cobalt

9th Annual Basic Science International Conference 2019

自然科学（总论）

Jimmy^1 ; Ihsanti, D.H.^1 ; Roesyadi, Achmad^1 ; Suprapto^1 ; Kurniawansyah, Firman^1

Chemical Engineering Department, Institut Teknologi Sepuluh Nopember ITS Sukolilo Campuss, Surabaya, East-Java

60111, Indonesia^1

关键词: Catalyst reduction;    Cracking catalysts;    FT-IR spectrum;    Impregnation process;    Polymerization catalysts;    Pore diameters;    Synthesis and characterizations;    Total surface area;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/546/7/072003/pdf
DOI  :  10.1088/1757-899X/546/7/072003

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

The combination of bimetallic Fe-Co (as polymerization catalyst) and HZSM-5 (as cracking catalyst) could convert synthesis gas to biofuel in one-step Fischer-Tropsch synthesis. Mesoporous HZSM-5 gave better conversion, because it increased reactants and products diffusivity. The effect of impregnated ratio of iron and cobalt on characterization of Fe-Co/meso-HZSM-5 catalyst had been studied. HZSM-5 was made from ammonium ZSM-5 through calcination process, then it was desilicated with NaOH and impregnated with 10% metal loading and 0-100% Fe content in Fe-Co (%w). The material results were reduced continuously by hydrogen at 400° for 10 hours. Treatment of HZSM-5 in various ratio of iron and cobalt leads to mesoporosity development. The iron and cobalt impregnation decreased the total surface area from 350.859 m2/g (on HZSM-5) to 231.852-329.606 m2/g (on Fe-Co/HZSM-5). Increasing cobalt content in Fe-Co impregnation on HZSM-5 decreased total surface area and increased average pore diameter. Impregnation process lowered the crystallinity but still maintained the material crystal structure. The catalyst reduction produced Fe, Co, alloy Fe-Co and less oxides of Fe2O3 and Co3O4. The largest alloy Fe-Co could be found in 30Fe-70Co/HZSM-5. Iron and cobalt impregnation occupied the active sites formed from alcohol groups function that was indicated with decreasing alcohol groups area in FTIR spectra.