Catalysis Letters

, Volume 141, Issue 5, pp 691–698 | Cite as

Mixed Naphtha/Methanol Feed Used in the Thermal Catalytic/Steam Cracking (TCSC) Process for the Production of Propylene and Ethylene

  • H. T. Yan
  • R. Le Van Mao


The addition of some methanol to petroleum light naphtha used as feed in the Thermal Catalytic/Steam Cracking(TCSC) process significantly increases the product yield of C2–C4 olefins, particularly that of ethylene + propylene. However, over 20–25 wt% of methanol content in the naphtha feed, the beneficial effect is attenuated. At relatively high values of contact time, the (Zn–Pd) co-catalyst of the hybrid catalyst exerts noticeably its coke cleaning effect on the zeolite acid sites, particularly when methanol is present in the feed. The product weight ratio (propylene/ethylene) is not affected by such “moderate” addition of methanol and remains higher than 1.3.

Graphical Abstract


Thermal catalytic steam cracking Hybrid catalysts Mixed naphtha/methanol feed 



The authors thank the Natural Science and Engineering Research Council of Canada (NSERC) and Valeo Management, for their financial support. They also thank Ultramar Inc (Quebec, Canada) for having supplied the light naphtha used in this work.


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Department of Chemistry and BiochemistryIndustrial Catalysis Laboratory, Concordia UniversityMontrealCanada

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