Synthesis and Characterization of Fe-Co/mesoHZSM-5 : Effect of Desilication Agent and Iron-cobalt Composition

Jimmy; Achmad Roesyadi; Suprapto; Firman Kurniawansyah

Korean Chemical Engineering Research, Vol.58, No.1, 163-169, February, 2020

DOI10.9713/kcer.2020.58.1.163 Export Citation

Synthesis and Characterization of Fe-Co/mesoHZSM-5 : Effect of Desilication Agent and Iron-cobalt Composition

Jimmy, Achmad Roesyadi^†, Suprapto, and Firman Kurniawansyah

Chemical Engineering Department, Institut Teknologi Sepuluh Nopember, ITS Sukolilo Campus, Surabaya, East Java, Indonesia-60111

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Synthesis of Fe-Co/meso-HZSM5 catalyst, intended to be applied in Fischer-Tropsch (FT) reaction was investigated. The study emphasized the effect of desilication agents, NaOH and KOH, on the catalyst materials properties. Impregnation composition of active metal (Fe and Co) was also examined. HZSM-5, converted from ammonium ZSM-5 through calcination, was treated with NaOH and KOH for desilication, followed by impregnation with 10% metal loading. Fe composition in the initial mixture was varied at 10-50% from total composition. After impregnation, reduction was applied by flowing hydrogen gas at 400 °C for 10 hours. The use of KOH solution induced greater mesoporous volumes; however, it had a detrimental effect on zeolite crystal structure. NaOH solutions, on the other hand, increased mesopore area as high as 100%, indicated from surface area increase from 266.28 m2/g of HZSM-5, to 526.03 m2/g of NaOHdesilicated HZSM-5. In addition, the application of NaOH solution increased pore volume from 0.14 cc/g to 0.486 cc/g. Further, more Fe-Co alloys and less oxide of iron (Fe2O3) as well cobalt (Co3O4) had been commonly observed in the produced catalysts. The largest Fe-Co alloys could be found in 50Fe-50Co/HZSM-5.

Keywords:HZSM-5;Mesopore;Impregnation;Fe-Co;Desilication

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[2] Sartipi S, Parashar K, Makkee M, et al., Catalysis Science & Technology, 3, 572(2013).

[3] Sun S, Sartipi S, Kapteijn F, Gascon J, New J. Chem., 40, 4167 (2016)

[4] Valero-Romero MJ, Sartipi S, Sun X, et al., Catalysis Science and Technology, 6, 2633-2646(2016).

[5] Sineva LV, Asalieva EY, Mordkovich VZ, Russian Chemical Reviews, 84, 1176 (2015)

[6] Pour AN, Zare M, Kamali Shahri SM, et al., J. of Natural Gas Science and Engineering, 1, 183-189 (2009).

[7] Sartipi S, Parashar K, Valero-Romero MJ, et al., J. of Catalysis., (2013).

[8] Valero-Romero MJ, Sartipi S, Sun X, et al., Catalysis Science and Technology., (2016).

[9] Kim CU, Kim YS, Chae HJ, Jeong KE, Jeong SY, Jun KW, Lee KY, Korean J. Chem. Eng., 27(3), 777 (2010)

[10] Luo, Bao, Keogh, et al., AIChE Annual Meeting, Conference Proceedings. (2006).

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[20] Al-Thawabeia RA, Hodali HA, J. of Chemistry, (2015).

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[22] Tavasoli A, Trepanier M, Abbaslou RMM, Dalai AK, Abatzoglou N, Fuel Process. Technol., 90(12), 1486 (2009)