New PDF release: Advances in Catalysis and Related Subjects, Volume 4

By W G Frankenberg

ISBN-10: 0080565085

ISBN-13: 9780080565088

ISBN-10: 012007804X

ISBN-13: 9780120078042

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Extra info for Advances in Catalysis and Related Subjects, Volume 4

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Mechanism of Catalytic Cracking It is now generally agreed, with some exceptions, that the cracking of hydrocarbons over silica-alumina and related catalysts involves a cationic mechanism in which the acidity of the catalyst plays a decisive role. There is some disagreement among workers in this field concerning the actual part played by the acid centers of the catalyst in the initiating step of the mechanism. The writer (42) published the first attempt t o explain the mechanism of catalytic cracking in terms of an ionic mechanism, later modifying the initial concept, which involved both cationic and anionic complexes, to include only a cationic mechanism (47).

Oil Gas J. 46, No. 28, 231 (1947). 20. Mills, I. , Oil Gas J. 46, No. 28, 237 (1947); Proc. Am. Petroleum Inst. 27 [III], 29 (1947). 21. , and Shimp, H. , Natl. Petroleum News 36, No. , Proc. Am. Petroleum Znst. 27 [III],51 (1947). 22. Birkhimer, E. , Macuga, S. , and Leum, L. , Proc. Am. Petroleum Znst. 27 [111], 90 (1947). 23. Shankland, R. , and Schmitkons, G. , Proc. Am. Petroleum Znst. 27 [111], 57 (1947). 24. Conn, M. , and Connolly, G. , Znd. Eng. Chem. 39, 1138 (1947). 30 R. C. HANSFORD 25.

Mechanism of Catalytic Cracking It is now generally agreed, with some exceptions, that the cracking of hydrocarbons over silica-alumina and related catalysts involves a cationic mechanism in which the acidity of the catalyst plays a decisive role. There is some disagreement among workers in this field concerning the actual part played by the acid centers of the catalyst in the initiating step of the mechanism. The writer (42) published the first attempt t o explain the mechanism of catalytic cracking in terms of an ionic mechanism, later modifying the initial concept, which involved both cationic and anionic complexes, to include only a cationic mechanism (47).

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Advances in Catalysis and Related Subjects, Volume 4 by W G Frankenberg


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