HIGH PURITY MESOPOROUS Γ-AL2O3 FROM KANO KAOLIN IN THE PRESENCE OF POLYETHYLENE GLYCOL 6000 (PEG-6000) SURFACTANT

Abdu Muhammad Bello, Abdul Rahim Yacob, Kamaluddeen Suleiman Kabo

Abstract


Mesoporous γ-Al2O3 with large surface area and narrow pore size was synthesized from acid-leachates of calcined kaolin in the presence of polyethylene glycol 6000 (PEG-6000) surfactant at room temperature. The synthesized alumina was characterized by X-ray diffraction (XRD), Nitrogen adsorption-desorption, Fourier transform infra-red spectroscopy (FTIR), field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray analysis (EDX), and thermogravimetric-Derivative thermal analysis (TG-DTA). High-purity mesoporous γ-Al2O3 with large surface area of 365.1 m2/g, narrow pore size distribution centred at 5.3 nm and pore volume of 0.46 cm3/g was obtained at 500 oC. When the calcination temperature has increased to 700 oC, the surface area decreased to 272.9 m2/g. Crystallite size calculated using Scherer’s equation revealed the average size of 4.33 and 4.12 nm for alumina calcined at 500 and 700 oC, respectively. The excellent pore structural properties (high surface area and large pore volume) of the synthesized mesoporous γ-alumina in the present study will allow for higher loading of active catalytic phases, as such it can be used as catalyst support.  


Keywords


Alumina, Kano, kaolin, mesoporous, purity

Full Text:

PDF

References


Du, C., and H. Yang. 2012. Investigation of the Physicochemical Aspects from Natural Kaolin to Al-MCM-41 Mesoporous Materials. Journal of Colloid and Interface Science. 369(1): 216-222.

Márquez‐Alvarez, C., N., Zilkova, J. P. Pariente and J. Cejka. 2008. Synthesis, Characterization and Catalytic Applications of Organized Mesoporous Aluminas. Catalysis Reviews. 50(2): 222-286.

Vaudry, F., S. Khodabandeh and M. E. Davis. 1996. Synthesis of Pure Alumina Mesoporous Materials. Chem. Mater. 8: 1451-1464.

Ona, Y. and H. Hattori. 2011. Solid Base Catalysis. Tokyo Institute of Technology Press.

Tanushree, C. and M. M. Nirendra. 2010. Role of Clay as Catalyst In Friedel-Craft Alkylation. Bull. Mater. Sci. 34(6): 1273-1279.

Pan, F., X., Lu, T., Wang, Y., Wang, Z. Zhang and Y. Yan. 2013a. Triton X-100 Directed Synthesis of Mesoporous γ -Al 2 O 3 from Coal-Series Kaolin. Applied Clay Science. 85: 31-38.

Pan, F., X., Lu, T., Wang, Y., Wang, Z., Zhang, Y., Yan, and S. Yang. 2013b. Synthesis of Large-Mesoporous Γ-Al2O3 from Coal-Series Kaolin at Room Temperature. Materials Letters. 91(1): 136-138.

Darban, A. K., Y. Kianinia and E. Taheri-nassaj. 2013. Synthesis of Nano- Alumina Powder from Impure Kaolin and Its Application for Arsenite Removal from Aqueous Solutions. Journal of Environmental Health Science and Engineering. 11(1): 1-11.

Yang, H., M. Liu and J. Ouyang. 2010. Novel Synthesis and Characterization of Nanosized γ-Al2O3 from Kaolin. Applied Clay Science. 47(3-4): 438-443.

Xiong, W. and and Zhang, Q. 2015. Surfactants as Promising Media for the Preparation of Crystalline Inorganic Materials. Angewandte Chemie - International Edition. 54: 11616-11623.

Eze, K. A., J. O. Nwadiodbu and E. T. Nwankwere. 2012. Effect of Acid Treatment on the Phisicochemical Properties of Kaolin Clay. Arch. Appl. Sci. Res. 4(2): 792-794.

Khalil, K. M. S. 2008. Applied Surface Science Formation of Mesoporous Alumina via Hydrolysis of Modified Aluminum Isopropoxide in Presence of CTAB Cationic Surfactant. Applied Surface Science. 255: 2874-2878.

Sun, Z.-X., T.-T., Zheng, Q.-B., Bo, M. Du and W. Forshing 2008. Effects of Calcination Temperature on the Pore Size and Wall Crytalline Structure of Mesoporous Alumina. Journal of Colloid and Interface Science. 319: 247-251.

Liu, Y. and H-X. He 2013. Structure and Thermal Stability of Mesoporous Alumina Synthesized By Al-Based Coordination Polymer. Microporous and Mesoporous Materials. 165: 27-31.

Rangel-Porras, G., P. Rangel-Rivera and E. Ramos-Ramirez 2014. Changes in the Thermal Behavior and Surface Area of Transtional Alumina Induced by the Inclusion of Metallic Ions. Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry. Accepted Manuscript.

Zhu, Z., H., Liu, H. Sun and D. Yang. 2009. PEG-directed Hydrothermal Synthesis of Multilayered Alumina Microfibers with Mesoporous Structures. Microporous and Mesoporous Materials. 123(1-3): 39-44.

Xue, W., Y. C., Zhou, B. A., Song, X., Shi, J., Wang, S. T., Yin, D. Y., Hu, L. H. Jin and S. Yang. 2009. Synthesis of Biodiesel from Jatropha Curcas L. Seed Oil Using Artificial Zeolites Loaded With CH3COOK as a Heterogeneous Catalyst. Natural Science. 1: 55-62.

Liu, Q., A., Wang, X., Wang, P., Gao, X. Wang and T. Zhang. 2008. Synthesis, Characterization and Catalytic Applications of Mesoporous Γ-Alumina from Boehmite Sol. Microporous and Mesoporous Materials. 111: 323-333.

Polarz, S. 2004. Ordered Mesoporous Materials. Encyclopedia of Nanoscience and Technology. 8: 239-258.

Kang, M., D., Kin, S., Uk, J., Hwan, J. Eui and Ji. Man. 2004. Preparation of Stable Mesoporous Inorganic Oxides via Nano-Replication Technique. Catalysis Today. 95: 695-699.

Lesaint, C., G., Kleppa, D., Arla, R.G. Wilhelm and O. Gisle. 2009. Synthesis and Characterization of Mesoporous Alumina Materials with Large Pore Size Prepared by a Double Hydrolysis Route. Microporous and Mesoporous Materials. 119(1-3): 245-251.

Liu, Q., A., Wang, X. Wang and T. Zhang. 2006. Mesoporous γ-alumina Synthesized By Hydro-Carboxylic Acid as Structure-Directing Agent. Microporous and Mesoporous Materials. 92: 10-21.




DOI: http://dx.doi.org/10.11113/jt.v79.4859

Refbacks

  • There are currently no refbacks.


Copyright © 2012 Penerbit UTM Press, Universiti Teknologi Malaysia.
Disclaimer : This website has been updated to the best of our knowledge to be accurate. However, Universiti Teknologi Malaysia shall not be liable for any loss or damage caused by the usage of any information obtained from this web site.
Best viewed: Mozilla Firefox 4.0 & Google Chrome at 1024 × 768 resolution.