Investigating the effect of zeolite (A4) on the pyrolysis of tyre and poplar wood wastes

Document Type : Research Article


1 Faculty of Chemical and Petroleum Engineering - University of Tabriz

2 Faculty of Chemical and Petroleum Engineering, University of Tabriz


In this work, the effect of zeolite catalyst on the pyrolysis process of waste tyre and poplar wood was investigated. For this aim, 15 grams of sample was loaded in a laboratory-sized reactor and pyrolyzed at 500°C under atmospheric pressure. The results showed that zeolite catalyst could change the characteristics of manufactured products. In the case of gaseous products, the catalyst reduced the amount of carbon monoxide and carbon dioxide. The results of the liquid product analysis showed the presence of light aromatics such as ethyl benzene and light linear compounds such as alkanes including octane, hexane, etc in the liquid product. By adding the zeolite catalyst to the reaction environment, the amounts of the mentioned compounds changed significantly. For example, the amount of alkanes decreased. The results of the analysis showed that the catalyst had almost no effect on wax properties. Analysis of poplar wood, waste tyre and char samples produced in thermal and catalytic pyrolysis indicated that the two samples had similar properties, but the difference in intensity in the characteristics of different bands showed different numbers of chemical functional groups in the char samples. The small amount of carbon on the surface of catalyst showed that very small amount of coke was formed on the surface of the catalyst.


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