Impact of HY as an Additive in Pd/HBETA Catalyst on Waste Tire Pyrolysis Products
Manchantrarat, N.
Jitkarnka, S.
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Manchantrarat N., Jitkarnka S., 2012, Impact of HY as an Additive in Pd/HBETA Catalyst on Waste Tire Pyrolysis Products, Chemical Engineering Transactions, 29, 733-738.
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Addition of HY as a zeolite additive into Pd/HBETA used in the catalytic pyrolysis of waste tire was studied in this work. Pd/HBETA was used as the main catalyst because of its ability on improving the quality and quantity of light fractions (full range naphtha, and kerosene). Due to the different porosity and acid properties of the two zeolites, HY was therefore used as the additive in the main catalyst to improve the cracking performance and the quality of oil product. The amount of Pd on HBETA was fixed at 1 %wt whereas the amount of HY was varied at 10 and 20 %wt. The obtained products were analyzed via gas chromatograph, liquid chromatograph, and SIMDIST-GC, while the catalysts were characterized by SAA, and TG-DTA. The results indicated that the HY as a catalyst itself can improve the quality and quantity of oil product in the range of naphtha fraction. After adding HY as the additive in Pd/HBETA, the quality and quantity of light gas oil fraction were improved with the increasing saturated hydrocarbons in this fraction. In addition, the light olefins production was gradually enhanced when the HY was added in Pd/HBETA. These results revealed that the nature of HY and specific pore volume were two important factors influencing the products.
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