Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1985-11-25
1988-07-19
Davis, Curtis R.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208111, 208134, 208213, 208254H, 568591, 585467, 585480, 585481, 585475, 585750, C10G 4712, C07C 268, C07C 522, C07C 513
Patent
active
047583282
ABSTRACT:
A process for producing a thermally shock calcined aluminosilicate zeolite comprising (A) precalcining an aluminosilicate zeolite at a relatively low temperature, (B) very rapidly increasing the temperature of the aluminosilicate zeolite to a relatively high temperature for a short period of time, and (C) rapidly cooling the aluminosilicate zeolite. The resulting zeolite is catalytically active for hydrocarbon conversion reactions and is particularly selective for the production of para-xylene from a reaction mix of toluene and a methylating agent.
REFERENCES:
patent: 3528615 (1970-09-01), Kokatailo
patent: 3766056 (1973-10-01), Young
patent: 3842016 (1974-10-01), Young
patent: 3864282 (1975-02-01), Young
patent: 3941871 (1976-03-01), Dwyer et al.
patent: 4016218 (1977-04-01), Haag et al.
patent: 4270017 (1981-05-01), Young
patent: 4325929 (1982-04-01), Young
patent: 4344927 (1982-08-01), Young
patent: 4414137 (1983-11-01), Young et al.
patent: 4433187 (1984-02-01), Young
Jeffrey L. Fox, "Zeolites Catalyze Patent Dispute," Science, Jan. 4, 1985, pp. 35-36.
R. von Ballmoos and W. M. Meier, "Zoned Aluminum Distribution in Synthetic Zeolite ZSM-5." Nature, vol. 289, Feb. 26, 1981, pp. 782-783.
Stephen Budiansky, "Research Article Triggers Dispute on Zeolite," Nature, vol. 300, Nov. 25, 1982, p. 309.
Lovat V. C. Rees, "When is a Zeolite Not a Zeolite?," Nature, vol. 296, Apr. 8, 1982, pp. 491-492.
C. A. Fyfe, G. C. Gobbi, J. Klinowski, J. M. Thomas, and S. Ramdas, "Resolving Crystallographically Distinct Tetrahedral Sites in Silicalite and ZSM-5 by Solid-State NMR," Nature, vol. 296, Apr. 8, 1982, pp. 530-533.
D. H. Olsen, W. O. Haag, and R. M. Lago, "Chemical and Physical Properties of the ZSM-5 Substitutional Series," Journal of Catalysts, vol. 60, 1980, pp. 390-396.
Davis Curtis R.
Finkle Yale S.
Sandford Dean
Union Oil Company of California
Wirzbicki Gregory F.
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