A study of the mechanisms of the salt catalyzed carbochlorination of kaolin

Metallurgical Transactions B - Tập 15 - Trang 695-700 - 1984
Arne Landsberg1, R. D. Wilson1
1Albany Research Center, United States Bureau of Mines, Albany

Tóm tắt

Continuous weighing of kaolin during carbochlorination has been used to show the superiority of NaCl as a catalyst for increasing the reaction rate and selectivity at 625° to 650 °C, and the possibility of using different types of carbon as a reductant. Initial distribution of NaCl in the kaolin was found to be of importance. A reaction mechanism involving the formation of NaAlCl4 and alumina solubility in this salt is used to explain the effect of reactor configuration and kaolin particle geometry.

Tài liệu tham khảo

A. Landsberg:Metall. Trans. B, 1975, vol. 6B, pp. 207–14. A. Landsberg:Metall. Trans. B, 1977, vol. 8B, pp. 435–41. B. Gurtner, J. Cohen, and J. Andrioly: European Patent Application 55, 681, Dec. 23, 1981. A. S. Russell:J. of Metals, June 1981, vol. 33, pp. 132–37. A. S. Russell, N. Jarrett, and P. T. Stroup: U.S. Pat. 3,842,163, Oct. 15, 1974. D. J. Milne:Proc. Australas. Inst. Min. Metall., Dec. 1976, no. 240, pp. 23–31. H.P. Alder:Light Metals, 1979, vol. 1, pp. 337–52. D.J. Milne and L.J. Wibberley:Light Metals., 1978, vol. 2, pp. 147–62. R. Wyndham and J.C. Terry: U.S. Pat. 4,082,833, Apr. 4, 1978. R. Wyndham: U.S. Pat. 4,083,927, Apr. 11. 1978. K. A. Smith, S.C. Riemer, and I. Iwasaki:J. of Metals, Sept. 1982, pp. 59–62. L. B. Pankratz:Thermodynamic Properties of the Elements and Oxides, BuMines Bulletin 672, 1982, 509 pp. L.B. Pankratz:Thermodynamic Properties of Halides, BuMines Bulletin 674, 1984, 841 pp. D.J. Milne:Metall. Trans. B, 1975, vol. 6B, pp. 486–87.