Effects of Ultrasound Irradiation on Synthesis of Solid Acid Catalysts

Abstract:

The studies based on morphological characterization to assess the effects of ultrasound irradiation on synthesis of solid acid catalysts. Three sets of catalyst formulation were synthesized by both wet impregnation method and ultrasound assisted methods with different wt. % of Ni loading on γ-Al₂O₃. The XRD, BET, TEM and FESEM techniques were used to characterize the nano-particles. Physicochemical characterization revealed that the synthesized catalysts particles using ultrasound irradiation were in nano size range (1-24.5 nm) with equal dispersion of metal oxide, high surface area with increase of metal loading and high phase purity than the catalysts synthesized conventional method. These catalysts were also found in various crystal structures like cubic, monoclinic and tetrahedral. The use of ultrasound irradiation has great significance over the wet impregnation method in relation to the rate of synthesis of nanocatalysts. The high surface area, high thermal stability and small particle size (up to 1 nm) are the basic elements for high activity of solid acid catalysts in hydrocracking and hydrodeoxygenation of various feedstock in petroleum industries.

• Periodical: Key Engineering Materials (Volume 701)
• Pages: 67-72
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.701.67
• Online since: July 2016
• Authors: Mariam Ameen, Mohammad Tazli Azizan*, Suzana Yusup, Anita Ramli, Madiha Yasir, Khajia Ahmad Jais, Mohammad Husaaini Sa'aid
• Keywords: Nanoparticles, Physicochemical Properties, Solid Acid Catalyst, Ultrasound Assisted

References

[1] A. Aslani, A. Morsali, V.T. Yilmaz, C. Kazak, Hydrothermal and sonochemical synthesis of a nano-sized 2D lead (II) coordination polymer: A precursor for nano-structured PbO and PbBr2, J. Mol. Struct. 929 (2009) 187-192.

DOI: 10.1016/j.molstruc.2009.04.026

[2] S. Allahyari, M. Haghighi, A. Ebadi, S. Hosseinzadeh, Ultrasound assisted co-precipitation of nanostructured CuO–ZnO–Al2O3 over HZSM-5: Effect of precursor and irradiation power on nanocatalyst properties and catalytic performance for direct syngas to DME, Ultrason. Sonochem. 21 (2014).

DOI: 10.1016/j.ultsonch.2013.09.014

[3] S. Khanjani, A. Morsali, A new nano-particles La III compound as a precursor for preparation of La2O2(SO4) nano-particles, J. Mol. Struct. 935 (2009) 27-31.

DOI: 10.1016/j.molstruc.2009.06.035

[4] A. Morsali, A. Panjehpour, Ultrasonic-assisted synthesis of nano-structured lead (II) coordination polymers as precursors for preparation of lead (II) oxide nanoparticles, Inorg. Chim. Acta. 391 (2012) 210-217.

DOI: 10.1016/j.ica.2012.04.024

[5] J.C. Yu, L. Zhang, Q. Li, K.W. Kwong, A. W. Xu, J. Lin, Sonochemical Preparation of Nanoporous: Composites of Titanium Oxide and Size-Tunable Strontium Titanate Crystals, Langmuir. 19 (2003) 7673-7675.

DOI: 10.1021/la0345035

[6] P. Awati, S. Awate, P. Shah, V. Ramaswamy, Photocatalytic decomposition of methylene blue using nanocrystalline anatase titania prepared by ultrasonic technique, Catal. Commun. 4 (2003) 393-400.

DOI: 10.1016/s1566-7367(03)00092-x

[7] D. Vollet, D. Donatti, A. Ibañez Ruiz, J. da Silva, About the nanoporosity elimination above 800 ◦C in xerogels prepared from TEOS sono-hydrolysis physica status solidi. (a), 196 (2003) 379-383.

DOI: 10.1002/pssa.200305948

[8] J. Liang, X. Jiang, G. Liu, Z. Deng, J. Zhuang, F. Li, Y. Li, Characterization and synthesis of pure ZrO2 nanopowders via sonochemical method, Mater. Res. Bull. 38 (2003) 161-168.

DOI: 10.1016/s0025-5408(02)01007-3

[9] P. Jabbarnezhad, M. Haghighi, P. Taghavinezhad, Sonochemical synthesis of NiMo/Al2O3–ZrO2 nanocatalyst: Effect of sonication and zirconia loading on catalytic properties and performance in hydrodesulfurization reaction, Fuel Process. Technol. 126 (2014).

DOI: 10.1016/j.fuproc.2014.04.011

[10] J. Gnanaraj, V. Pol, A. Gedanken, D. Aurbach, Improving the high-temperature performance of LiMn2O4 spinel electrodes by coating the active mass with MgO via a sonochemical method, Electrochem. Commun. 5 (2003) 940-945.

DOI: 10.1016/j.elecom.2003.08.012

[11] K.S. Suslick, S.B. Choe, A.A. Cichowlas, M.W. Grinstaff, Sonochemical synthesis of amorphous iron, Nature. 353 (1991) 414-416.

DOI: 10.1038/353414a0

[12] R.R. Ramos, C. Bolívar, J. Castillo, J. Hung, C.E. Scott, Ultrasound assisted synthesis of nanometric Ni, Co, NiMo and CoMo HDS catalysts, Catal. Today. 133 (2008) 277-281.

DOI: 10.1016/j.cattod.2007.12.048

[13] O.O. James, S. Maity, M.A. Mesubi, L.A. Usman, K.O. Ajanaku, T.O. Siyanbola, S. Sahu, R. Chaubey, A review on conversion of triglycerides to on-specification diesel fuels without additional inputs, Int. J. of Ener. Res. 36 (2012) 691-702.

DOI: 10.1002/er.2894

[14] Y. Vafaeian, M. Haghighi, S. Aghamohammadi, Ultrasound assisted dispersion of different amount of Ni over ZSM-5 used as nanostructured catalyst for hydrogen production via CO2 reforming of methane, Energy Convers. Manage. 76 (2013) 1093-1103.

DOI: 10.1016/j.enconman.2013.08.010

[15] P. Estifaee, M. Haghighi, N. Mohammadi, F. Rahmani, CO oxidation over sonochemically synthesized Pd–Cu/Al2O3 nanocatalyst used in hydrogen purification: Effect of Pd loading and ultrasound irradiation time, Ultrason. Sonochem. 21 (2014).

DOI: 10.1016/j.ultsonch.2013.11.019