Coal Fly Ash Utilization for Sustainable Environment Management: Crystallization Kinetics Of MCM-41
Keywords:
Coal fly ash; MCM-41; hydrothermal synthesis parameter, Activation energy.Abstract
We report eco-friendly synthesis of mesoporous molecular sieves of M41S family using coal fly ash available in ample as the thermal power station waste during electricity generation. This contributes to the green synthesis of MCM-41 at a cheaper production cost. Coal fly ash was used to synthesize MCM-41 by alkali fusion followed by hydro-thermal treatment and was characterized using various techniques viz. XRD, SEM, FTIR, TGA-DTG, N2-sorption for surface area measurement etc. The synthesis and history dependent parameters were optimized to obtain highly crystalline phase of MCM-41. During the synthesis crystallization kinetics was studied. The highly crystalline nature and well ordered phase was obtained at 1300C with utmost BET surface area 1059m2/g with high purity. The activation energy of crystallization kinetics was found to be 171.23 kJ/mole.
References
- Carlson CL, Adriano DC Environmental impacts of coal combustion residues. J Environ Qual (1993)22:227–247
- Forstner U Applied environmental geochemistry. Academic Press, London, (1983) p 395
- Jones KC Contamination trends in soils and crops. Environ Pollut(1991) 69:311–325
- Satyanarayana Raju MV Pollution status of soils near ash pond of a thermal power station (1993)
- Coal demand and linkages 1994/95 to 1996/97 and 2001/02—midterm appraisal of Eighth Five Year Plan. August 1994.
- Coal Directory of India, 1996–97. Calcutta: Ministry of Coal. Coal Controller’s Organization, 1997, 128pp.
- Fourth National Power Plan, 1997–2012. Central Electricity Authority, Government of India, 1997.
- Narasimhan, K.S., Bhoumik, S.K., Reddy, P.S.R., Prakash, S., Biswal,S.K., 1997. Washability characteristics of Indian coals. Journal of Mines,Metals and Fuels.45,233–237.
- Fox, C.S.,The Lower Gondwana coalfields of India: Calcutta, India, Memoirs of the Geological Survey of India, v. LIX, (1934)368 p.
- Yanagisawa, Tsuneo; Shimizu, Toshio; Kuroda, Kazuyuki; Kato, Chuzo (1990). "The preparation of alkyltrimethylammonium-kanemite complexes and their conversion to microporous materials". Bulletin of the Chemical Society of Japan 63 (4): 988.
- J. Rouquerol et al. (1994). "Recommendations for the characterization of porous solids " Pure & Appl. Chem 66 (8): 1739–1758.
- J. S. Beck; J. C. Vartuli; W. J. Roth; M. E. Leonowicz; C. T. Kresge; K. D. Schmitt; C. T-W.Chu; D. H. Olson; E. W. Sheppard; S. B. McCullen; J. B. Higgins; and J. L. Schlenkert (1992). "A New Family of Mesoporous Molecular Sieves Prepared with Liquid Crystal Templates". American Chemical Society 114 (114): 10834–10843.
- Brian Trewyn, et al. (2007). "Synthesis and Functionalization of a Mesoporous Silica Nanoparticle Based on the Sol–Gel Process and Applications in Controlled Release". Accounts of Chemical Research 40 (40): 846–853.
- D.H. Park, C.-F. Cheng, H. He and J. Klinowski, J. Mater. Chem., 1997, 7(1),159-162.
- K.M. Reddy, I. Moudrakovski and A. Sayari, J. Chem. Soc., Chem. Commun.,1994, 1059-1060.
- J.S. Reddy and A. Sayari, J. Chem. Soc., Chem. Commun., 1995, 2231-2232.
- F. Deng, R. A. Johnson, P. M. Asbeck, S. S. Law, W. B. Dubbelday, T. Hsiao, and J. Woo, SSalicidation process using NiSi and its device applications T, J. Appl. Phys. Vol. 81, p.8047, 1997.
- Shiralkar, V.P. and Clearfield, A., Zeolite, 9, 363 (1989).
- Gregg, S.J., and Sing, K.S.W., Adsorption, Surface Area and Porosity, Academic Press
- London, Ch. 4 (1982).
- A. Corma, M.T. Navarro and J.P. Pérez-Pariente, J. Chem. Soc., Chem.Commun., 1994, 147-148.
Downloads
Published
Issue
Section
License
Copyright (c) IJSRST
This work is licensed under a Creative Commons Attribution 4.0 International License.
