Hydrocracking of a plastic mixture over various micro-mesoporous composite zeolites

Hydrocracking of a model waste plastic into liquid fuels of high quality was investigated over various acidic catalysts. Two micro-mesoporous composite catalysts as well as AI-SBA-15 and Al-SBA-16 catalysts were synthesized and characterized using XRD, N2-BET, SEM, EDX, TEM, FTIR, and Py-FTIR techniques. The hydrocracking experiments were performed in a high pressure stirred batch reactor for initial cold H-2 pressure of 20 bar, residence time of 60 min, and feed to catalyst ratio of 20:1 (by wt). The reaction temperature was varied between 375 and 425 degrees C. It is found that the effect of the presence and type of catalyst generally is not important at elevated temperatures. (C) 2017 Elsevier B.V. All rights reserved.