Conversion of higher n-alkanes under deep catalytic cracking conditions

• Published in: Petroleum chemistry Vol. 50; no. 5; pp. 362 - 367
• Main Authors: Lipin, P. V., Doronin, V. P., Gulyaeva, T. I.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01-09-2010; Springer
• Subjects: Ammonia; Chemistry; Chemistry and Materials Science; Hydrogen; Industrial Chemistry/Chemical Engineering; Olefins; Petroleum; Refining; Zeolites; Zeolite HZSM; Isoparaffins; Strong Acid Site; Zeolite; Petroleum Chemistry
• ISSN: 0965-5441; 1555-6239
• DOI: 10.1134/S0965544110050075

The product distribution for the deep catalytic cracking of C
16
-C
28
n
-alkanes has been studied. Using the method of the temperature-programmed desorption of ammonia, the difference in the acid properties of HZSM-5 and ultrastable Y zeolites and the catalyst matrix components has been found. For the primary cracking of heavy hydrocarbon feedstock to occur, the catalyst matrix must have a high acidity. Bizeolite catalysts exhibit high selectivities for olefins with both normal and branched chains, which are due to a decrease in the contribution of the hydrogen redistribution reaction. For a bizeolite catalyst, the additivity of the selectivities for olefins and aromatic hydrocarbons, depending on the composition of the zeolite component, is observed.