Catalytic cracking of linear paraffins: Effects of chain length

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie960255e· OSTI ID:438941

Abbot, J; Dunstan, P R ^[1]

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1. Ampol Refineries Queensland Ltd., Lytton, Queensland (Australia)

The influence of chain length on cracking reactions of linear paraffins on acid catalysts has been examined. Whether studied as individual reactants, as components of simple mixtures of paraffins, or as minor constituents of complex industrial FCCU feedstocks, increasing chain length of n-paraffins is associated with increasing cracking reactivity. This increase in reactivity cannot be accounted for solely by considering the increase in the number of carbon atoms or the number of crackable bonds in the molecular structure. However, by simultaneously taking into account adsorption phenomena and crackable bonds, good correlations between observed rates and predicted behavior are obtained, both for cracking of individual paraffins and for components of simple paraffin mixtures. Reasonable correlations are also observed for cracking rates of linear paraffins as components of industrial FCCU feedstocks. The presence of other components in the feed can influence the crackability of linear paraffins but does not have a major influence on the relative cracking rates of linear paraffins due to chain-length effects.

• OSTI ID: 438941
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 1 Vol. 36; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
ALKANES
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTION KINETICS
MOLECULAR WEIGHT
PETROLEUM