Conversion of polyethylene to gasoline: Influence of porosity and acidity of zeolites
Chunyu LI, Haihong WU, Ziyu CEN, Wanying HAN, Xinrui ZHENG, Jianxin ZHAI, Jiao XU, Longfei LIN, Mingyuan HE, Buxing HAN
Conversion of polyethylene to gasoline: Influence of porosity and acidity of zeolites
Plastic waste is causing serious environmental problems. Developing efficient, cheap and stable catalytic routes to convert plastic waste into valuable products is of great importance for sustainable development, but remains to be a challenging task. Zeolites are cheap and stable, but they are usually not efficient for plastic conversion at a low temperature. Herein a series of microporous and mesoporous zeolites were used to study the influence of porosity and acidity of zeolite on catalytic activity for plastics conversion. It was observed that H-Beta zeolite was an efficient catalyst for cracking high-density polyethylene to gasoline at 240 °C, and the products were almost C4–C12 alkanes. The effect of porosity and acidity on catalytic performance of zeolites was evaluated, which clearly visualized the good performance of H-Beta due to high surface area, large channel system, large amount accessible acidic sites. This study provides very useful information for designing zeolites for efficient conversion of plastics.
plastics conversion / polyethylene / zeolites / acidity / porosity
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