Catalytic Cracking of Heavy Olefins into Propylene, Ethylene and Other Light Olefins |
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Authors: | R Le Van Mao A Muntasar H T Yan Q Zhao |
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Affiliation: | 1. Industrial Catalysis Laboratory, Department of Chemistry and Biochemistry, Concordia University, 7141 Sherbrooke West, SP 275-09, Montreal, QC, H4B 1R6, Canada
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Abstract: | Hybrid catalysts developed for the thermo-catalytic cracking of liquid hydrocarbons were found to be capable of cracking C4 + olefins into light olefins with very high combined yields of product ethylene and propylene (more than 60 wt%) and C2–C4 olefins (more than 80 wt%) at 610–640 °C, and also with a propylene/ethylene weight ratio being much higher than 2.4. The olefins tested were heavier than butenes such as 1-hexene, C10 + linear alpha-olefins (LAO) or a mixture of LAO. The hydrogen spillover effect promoted by the Ni bearing co-catalyst, contributed to significantly enhancing the product yield of light olefins and the on-stream stability of the hybrid catalyst. |
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