Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
All issues
THE RATE OF NUCLEI FORMATION OF ZSM-5 ZEOLITE
Korean Journal of Chemical Engineering, July 1992, 9(3), 144-149(6), 10.1007/BF02705131
Download PDF
Abstract
The crystallization processes of ZSM-5 zeolite from mixture of colloid silica, sodium aluminate, sodium hydroxide and tetrapropyl ammonium bromide at 150-195℃ were studied. As the temperature increases, crystallization time decreases, crystal size becomes smaller, and the distribution becomes narrower. The rate of nuclei formation is deduced from the size distribution of final product under the assumption that crystal is growing at constant rate from the nuclei formed during the induction period. The rate of nuclei formation is also accelerated with temperature increase. When the rate constants of the crystal growth are 0.012-0.170㎛ㆍmin-1 at 150-195℃, the crystallization curves can be simulated with the rate equation of nuclei formation deduced from the crystal size distribution of the final product.
References
Chang CD, Silvestri AJ, J. Catal., 56, 169 (1979)
Kaeding WW, Butter SA, J. Catal., 61, 155 (1980)
Meisel SL, McCullough JP, Lechthaler CH, Weisz PB, ChemTech., Feb., 86 (1976)
Kaeding WW, Chu CC, Young SB, Weistern B, Butter SA, J. Catal., 67, 159 (1981)
Morrison RA, U.S. Patent, 3,856,872 (1974)
Barrer RM, "Hydrothermal Chemistry of Zeolite," Academic Press, London, Chapter 4 (1982)
Nastro A, Sand LB, Zeolites, 3, 57 (1983)
Ghamami M, Sand LB, Zeolites, 3, 155 (1983)
Araya A, Lowe BM, Zeolites, 6, 111 (1986)
Thompson RW, Huber MJ, J. Cryst. Growth, 56, 711 (1982)
Thompson RW, Dyor A, Zeolites, 5, 292 (1985)
Zhdanov SP, Samuelich NN, Proc. 5th Intern. Conf. Zeolites, Heydn, London, p. 75 (1980)
Thompson RW, Dyor A, Zeolites, 5, 302 (1985)
Chao KJ, Tsai TC, Chen MS, J. Chem. Soc.-Faraday Trans., 77, 547 (1981)
Seo G, Chung K, Park T, HWAHAK KONGHAK, 30(3), 285 (1992)
Argaur RJ, Landolt GR, U.S. Patent, 3,702,886 (1972)
Erdem A, Sand LB, J. Catal., 47, 249 (1977)
Zhdanov SP, Adv. Chem. Ser., 101, 20 (1970)
Meise W, Schwochow FE, Adv. Chem. Ser., 121, 169 (1972)
Kaeding WW, Butter SA, J. Catal., 61, 155 (1980)
Meisel SL, McCullough JP, Lechthaler CH, Weisz PB, ChemTech., Feb., 86 (1976)
Kaeding WW, Chu CC, Young SB, Weistern B, Butter SA, J. Catal., 67, 159 (1981)
Morrison RA, U.S. Patent, 3,856,872 (1974)
Barrer RM, "Hydrothermal Chemistry of Zeolite," Academic Press, London, Chapter 4 (1982)
Nastro A, Sand LB, Zeolites, 3, 57 (1983)
Ghamami M, Sand LB, Zeolites, 3, 155 (1983)
Araya A, Lowe BM, Zeolites, 6, 111 (1986)
Thompson RW, Huber MJ, J. Cryst. Growth, 56, 711 (1982)
Thompson RW, Dyor A, Zeolites, 5, 292 (1985)
Zhdanov SP, Samuelich NN, Proc. 5th Intern. Conf. Zeolites, Heydn, London, p. 75 (1980)
Thompson RW, Dyor A, Zeolites, 5, 302 (1985)
Chao KJ, Tsai TC, Chen MS, J. Chem. Soc.-Faraday Trans., 77, 547 (1981)
Seo G, Chung K, Park T, HWAHAK KONGHAK, 30(3), 285 (1992)
Argaur RJ, Landolt GR, U.S. Patent, 3,702,886 (1972)
Erdem A, Sand LB, J. Catal., 47, 249 (1977)
Zhdanov SP, Adv. Chem. Ser., 101, 20 (1970)
Meise W, Schwochow FE, Adv. Chem. Ser., 121, 169 (1972)
