Synthesis of trimetallic nanocatalysts of alumina supported Ni-Mo-W by ultrasound-precipitation method for thiophene hydrodesulfurization

Document Type : Original Article

Authors

1 Sahand University of Technology

2 Assistant professor in Sahand University of Technology

Abstract

In this study trimetallic Ni-Mo-W/alumina catalysts with different percentages of tungsten were synthesized by a hybrid method of ultrasound-precipitation. Synthesized catalysts were characterized by XRD, BET, FTIR, FESEM and EDX and then were evaluated in hydrodesulfurization of thiophene. Thiophene removal in trimetallic Ni-Mo-W/alumina catalysts reached to 89.23% while was 66.72% for bimetallic similar catalyst. Among different tungsten contents the highest thiophene removal and butane/butene ratio was attributed to the catalyst with 6% wt. tungsten. This catalyst showed small nano crystallites of metal oxides with uniform morphology with average size of 13 nm. The post characterization tests confirmed the stability in crystals of catalyst but some changes in morphology and functional groups were observed. Moreover the effect of residence time and thiophene concentration on the activity and selectivity of the trimetallic catalyst with 6% wt. tungsten was studied and the results showed with increasing the reaction time and reducing thiophene concentration, activity of the catalyst enhanced.

Keywords

References

[1] S. Sigurdson, V. Sundaramurthy, A.K. Dalai, J. Adjaye, Journal of Molecular Catalysis A: Chemical, 291 (2008) 30.
[2] E. Soghrati, M. Kazemeini, A.M. Rashidi, K.J. Jozani, Journal of the Taiwan Institute of Chemical Engineers, 45 (2014) 887.
[3] C. Li, B. Shi, M. Cui, H.-y. Shang, G.-h. Que, Journal of Fuel Chemistry and Technology, 35 (2007) 407.
[4] H. Topsøe, B.S. Clausen, Applied Catalysis, 25 (1986) 273.
[5] M. Absi-Halabi, A. Stanislaus, K. Al-Dolama, Performance comparison of alumina-supported Ni-Mo, Ni-W and Ni-Mo-W catalysis in hydrotreating vacuum residue, Fuel, 77 (1998) 787.
[6] H. Nava, F. Pedraza, G. Alonso, Catalysis Letters, 99 (2005) 65.
[7] N. Rahemi, M. Haghighi, A.A. Babaluo, S. Allahyari, M.F. Jafari, Energy Conversion and Management, 84 (2014) 50.
[8] N. Rahemi, M. Haghighi, A.A. Babaluo, M.F. Jafari, S. Allahyari, Catalysis Science & Technology, 3 (2013) 3183.
[9] N. Rahemi, M. Haghighi, A.A. Babaluo, M.F. Jafari, S. Khorram, Journal of Applied Physics, 114 (2013) 094301.
[10] M. Bahman, H. Mohammad, A. Erfan, J. Of Applied Chemistry, 39 (1395) 65, in Persian.
[11] Kh. T. Saeed, H. Mohammad, A. Mozaffar, A. Hossein, J. Of Applied Chemistry, 30 (1393) 89, in Persian.
[12] M. Morán-Pineda, S. Castillo, T. López, R. Gómez, B. Cordero, O. Novaro, Applied Catalysis B: Environmental, 21 (1999) 79.
[13] N. Rahemi, M. Haghighi, A.A. Babaluo, M.F. Jafari, S. Khorram, International Journal of Hydrogen Energy, 38 (2013) 16048.
[14] S. Allahyari, M. Haghighi, A. Ebadi, S. Hosseinzadeh, H. Gavam Saeedi, Reac Kinet Mech Cat, 112 (2014) 101.
[15] Y.V. Joshi, P. Ghosh, M. Daage, W.N. Delgass, Journal of Catalysis, 257 (2008) 71.
[16] D. Liu, L. Liu, G. Li, C. Liu, Journal of Natural Gas Chemistry, 19 (2010) 530.
[17] J.A. Mendoza-Nieto, O. Vera-Vallejo, L. Escobar-Alarcón, D. Solís-Casados, T. Klimova, Fuel, 110 (2013) 268.
[18] S. Badoga, A. Ganesan, A.K. Dalai, S. Chand, Catalysis Today, 291 (2017) 160.
[19] M.I. Mohammed, A.A. Abdul Razak, M.A. Shehab, Arabian Journal for Science and Engineering, 42 (2017) 1381.
[20] T.A. Saleh, S.A. Al-Hammadi, A.M. Al-Amer, Process Safety and Environmental Protection, 121 (2019) 165.
[21] S. Ashenaeian, M. Haghighi, N. Rahemi, Advanced Powder Technology, 30 (2019) 502.
Applied Chemistry Today
Volume 15, Issue 54
March 2020
Pages 153-166

Files

Share

How to cite

Statistics