Activation Temperature Study of Precipitated Fe/SiO2 Catalyst for Fischer-Tropsch Synthesis

Weixin Qian; Haitao Zhang; Qiwen Sun; Yongdi Liu; Weiyong Ying; Dingye Fang

doi:10.14233/ajchem.2014.15990

Issue

Vol. 26 No. 3 (2014): Vol 26 Issue 3

Issue Published : January 30, 2014

This work is licensed under a Creative Commons Attribution 4.0 International License.

Activation Temperature Study of Precipitated Fe/SiO2 Catalyst for Fischer-Tropsch Synthesis

https://doi.org/10.14233/ajchem.2014.15990

Weixin Qian

School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China

Haitao Zhang

School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China

Qiwen Sun

State Key Laboratory of Coal Liquefaction and Coal Chemical Technology, Shanghai 201203, P.R. China

Yongdi Liu

School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China

Weiyong Ying

School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China

Dingye Fang

School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China

Corresponding Author(s) : Weiyong Ying

wying@ecust.edu.cn; qwx0403@163.com

Asian Journal of Chemistry, Vol. 26 No. 3 (2014): Vol 26 Issue 3
Article Published : January 30, 2014

Abstract

The adsorption performance of H₂ and CO on a co-precipitated Fe/SiO₂ catalyst was studied by H₂-TPD, CO-TPD. XRD and Mössbauer spectrum to analyze the effect of activation temperature on the reaction performance and the composition of iron phases on catalyst surface. The results showed that hydrogen probably existed as the most stable CH and OH species on CO reduced catalysts, most of CO adsorbed as a dissociate state on CO reduced Fe/SiO₂ catalyst. On the reduced catalyst, the diffraction peaks intensity of iron carbides increased obviously while that of Fe₃O₄ diffraction peaks slightly reduced. On the used catalyst, the iron phases were mainly constituted by Fe₃O₄ and iron carbides. A higher activation temperature led to higher activity of catalyst, meanwhile, the weight fractions of CH₄ and C_2-8 increased slightly while C₉₊ decreased with increasing activation temperatures.

Keywords

Fischer-Tropsch synthesis Precipitated iron catalyst Activation temperature Reaction performance

Qian, W., Zhang, H., Sun, Q., Liu, Y., Ying, W., & Fang, D. (2014). Activation Temperature Study of Precipitated Fe/SiO2 Catalyst for Fischer-Tropsch Synthesis. Asian Journal of Chemistry, 26(3), 869–873. https://doi.org/10.14233/ajchem.2014.15990

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References

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References

M.E. Dry, Catal. Today, 71, 227 (2002); doi:10.1016/S0920-5861(01)00453-9.

Y.N. Wang, Y.Y. Xu, Y.W. Li, Y.-L. Zhao and B.-J. Zhang, Chem. Eng. Sci., 58, 867 (2003); doi:10.1016/S0009-2509(02)00618-8.

W. Zhou, J.G. Chen, K.G. Fang and Y.-H. Sun, Fuel Process. Technol., 87, 609 (2006); doi:10.1016/j.fuproc.2006.01.008.

W. Chu, P.A. Chernavskii, L. Gengembre, G. Pankina, P. Fongarland and A. Khodakov, J. Catal., 252, 215 (2007); doi:10.1016/j.jcat.2007.09.018.

J.P. Reymond, P. Meriadeau and S.J. Teichner, J. Catal., 75, 39 (1982); doi:10.1016/0021-9517(82)90119-1.

Q.L. Hao, L. Bai, H.W. Xiang and Y. Li, J. Nat. Gas Chem., 18, 429 (2009); doi:10.1016/S1003-9953(08)60134-6.

R.J. O’Brien, L.G. Xu, R.L. Spicer and B.H. Davis, Energy Fuels, 10, 921 (1996); doi:10.1021/ef9502315.

D.B. Bukur, K. Okabe, M.P. Rosynek, C.P. Li, D.J. Wang, K.R.P.M. Rao, G.P. Huffman, J. Catal., 155, 353 (1995); doi:10.1006/jcat.1995.1217.

Q.L. Hao, F.X. Liu, H. Wang, J. Chang, C.-H. Zhang, L. Bai, H.-W. Xiang, Y.-W. Li, F. Yi and B.-F. Xu, J. Mol. Catal., 261, 104 (2007); doi:10.1016/j.molcata.2006.07.056.

D.J. Duvenhage and N.J. Coville, Appl. Catal., 233, 63 (2002); doi:10.1016/S0926-860X(02)00118-7.

M.S. Luo and B.H. Davis, Fuel Process. Technol., 83, 49 (2003); doi:10.1016/S0378-3820(03)00077-8.

J. Benziger and R.J. Madix, Surf. Sci., 94, 119 (1980); doi:10.1016/0039-6028(80)90160-0.

D.W. Moon, D.J. Dwyer and S.L. Bernasek, Surf. Sci., 163, 215 (1985); doi:10.1016/0039-6028(85)90859-3.

C.H. Zhang, G.Y. Zhao, K.K. Liu, Y. Yang, H. Xiang and Y. Li, J. Mol. Catal., 328, 35 (2010); doi:10.1016/j.molcata.2010.05.020.

F. Bozso, G. Ertl, M. Grunze and M. Weiss, Appl. Surf. Sci., 1, 103 (1977); doi:10.1016/0378-5963(77)90009-5.

C. Brucker and T. Rhodin, J. Catal., 47, 214 (1977); doi:10.1016/0021-9517(77)90169-5.

Issue

Vol. 26 No. 3 (2014): Vol 26 Issue 3

Activation Temperature Study of Precipitated Fe/SiO2 Catalyst for Fischer-Tropsch Synthesis

Corresponding Author(s) : Weiyong Ying

Abstract

Keywords

Full Article

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