Conversion of polyethylene to gasoline: Influence of porosity and acidity of zeolites

IF 3.1 4区工程技术 Q3 ENERGY & FUELS

Frontiers in Energy Pub Date : 2023-09-30 DOI:10.1007/s11708-023-0897-1

Chunyu Li, Haihong Wu, Ziyu Cen, Wanying Han, Xinrui Zheng, Jianxin Zhai, Jiao Xu, Longfei Lin, Mingyuan He, Buxing Han

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引用次数: 0

Abstract

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.

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聚乙烯转化为汽油：沸石孔隙率和酸度的影响

塑料垃圾正在引发严重的环境问题。开发高效、廉价和稳定的催化途径，将塑料废弃物转化为有价值的产品，对可持续发展具有重要意义，但仍是一项具有挑战性的任务。沸石既便宜又稳定，但在低温条件下通常不能有效地进行塑料转化。本文使用一系列微孔和介孔沸石来研究沸石的孔隙率和酸度对塑料转化催化活性的影响。结果表明，H-Beta 沸石是一种高效催化剂，可在 240 ℃ 下将高密度聚乙烯裂解为汽油，产物几乎为 C4-C12 烷烃。研究还评估了孔隙率和酸度对沸石催化性能的影响，结果表明 H-Beta 沸石具有高比表面、大通道系统和大量可访问的酸性位点，因而具有良好的催化性能。这项研究为设计高效转化塑料的沸石提供了非常有用的信息。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frontiers in Energy Energy-Energy Engineering and Power Technology

CiteScore

5.90

自引率

6.90%

发文量

708

期刊介绍： Frontiers in Energy, an interdisciplinary and peer-reviewed international journal launched in January 2007, seeks to provide a rapid and unique platform for reporting the most advanced research on energy technology and strategic thinking in order to promote timely communication between researchers, scientists, engineers, and policy makers in the field of energy. Frontiers in Energy aims to be a leading peer-reviewed platform and an authoritative source of information for analyses, reviews and evaluations in energy engineering and research, with a strong focus on energy analysis, energy modelling and prediction, integrated energy systems, energy conversion and conservation, energy planning and energy on economic and policy issues. Frontiers in Energy publishes state-of-the-art review articles, original research papers and short communications by individual researchers or research groups. It is strictly peer-reviewed and accepts only original submissions in English. The scope of the journal is broad and covers all latest focus in current energy research. High-quality papers are solicited in, but are not limited to the following areas: -Fundamental energy science -Energy technology, including energy generation, conversion, storage, renewables, transport, urban design and building efficiency -Energy and the environment, including pollution control, energy efficiency and climate change -Energy economics, strategy and policy -Emerging energy issue