Interactions of n-alkanes within a restrictive pore system under fluid catalytic cracking (FCC) conditions

Cracking of n-C₈ and n-C₁₆ single feedstocks and their mixture was used to test interactions of alkanes, under fluid catalytic cracking (FCC) conditions, within the pores of ferrierite zeolite and MFI-type ZRP-5 zeolites (before and after SiCl₄ chemical vapor deposition (SiCl₄-CVD) modification). Over ferrierite zeolite and SiCl₄-CVD-modified ZRP-5 zeolite, the cracking of n-C₁₆ in a 50/50 (v/v) mixture of n-C₈ and n-C₁₆ is greatly suppressed, because of both the restrictive environment (narrowed pore openings) and the presence of n-C₈. Comparison of the cracking gas yield and the selectivity to C₃ in LPG over ZRP-5 zeolites before and after SiCl₄-CVD modification has also been presented.