{"title":"Composite zeolite beta catalysts for catalytic hydrocracking of plastic waste to liquid fuels","authors":"Dureem Munir, Hassaan Amer, Rabya Aslam, Mohamed Bououdina, Muhammad Rashid Usman","doi":"10.1007/s40243-020-00169-3","DOIUrl":null,"url":null,"abstract":"<p>The conversion of model waste plastic mixture into high-value liquid product was studied in the presence of hydrogen and composites of zeolite beta catalysts. For the sake of comparison, the conversion of actual waste plastic mixture and high-density polyethylene was also carried out. The composite zeolite beta catalysts were synthesized using a range of silica-to-alumina ratios, alkali concentrations, and hydrothermal treatment times. SEM, EDX, XRD, N<sub>2</sub>-BET, FTIR, and py-FTIR were used for the characterization of the catalysts. The catalytic experiments were conducted in a 500?ml stirred batch reactor at 20?bar initial cold H<sub>2</sub> pressure and the temperature of the reaction was varied between 360 and 400?°C. The two composite catalysts, BC27 and BC48, prepared without alkali pretreatment were found to be the most suitable catalysts. With BC27 and BC48 at 400?°C, 93.0?wt% conversion was obtained with actual plastic mixture and the liquid yield exceeded 68.0?wt%. Experiments with the regenerated catalysts showed their performance comparable to the fresh catalysts.</p>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":null,"pages":null},"PeriodicalIF":3.6000,"publicationDate":"2020-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s40243-020-00169-3","citationCount":"28","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials for Renewable and Sustainable Energy","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1007/s40243-020-00169-3","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 28
Abstract
The conversion of model waste plastic mixture into high-value liquid product was studied in the presence of hydrogen and composites of zeolite beta catalysts. For the sake of comparison, the conversion of actual waste plastic mixture and high-density polyethylene was also carried out. The composite zeolite beta catalysts were synthesized using a range of silica-to-alumina ratios, alkali concentrations, and hydrothermal treatment times. SEM, EDX, XRD, N2-BET, FTIR, and py-FTIR were used for the characterization of the catalysts. The catalytic experiments were conducted in a 500?ml stirred batch reactor at 20?bar initial cold H2 pressure and the temperature of the reaction was varied between 360 and 400?°C. The two composite catalysts, BC27 and BC48, prepared without alkali pretreatment were found to be the most suitable catalysts. With BC27 and BC48 at 400?°C, 93.0?wt% conversion was obtained with actual plastic mixture and the liquid yield exceeded 68.0?wt%. Experiments with the regenerated catalysts showed their performance comparable to the fresh catalysts.
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Energy is the single most valuable resource for human activity and the basis for all human progress. Materials play a key role in enabling technologies that can offer promising solutions to achieve renewable and sustainable energy pathways for the future.
Materials for Renewable and Sustainable Energy has been established to be the world''s foremost interdisciplinary forum for publication of research on all aspects of the study of materials for the deployment of renewable and sustainable energy technologies. The journal covers experimental and theoretical aspects of materials and prototype devices for sustainable energy conversion, storage, and saving, together with materials needed for renewable fuel production. It publishes reviews, original research articles, rapid communications, and perspectives. All manuscripts are peer-reviewed for scientific quality.
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1. MATERIALS for renewable energy storage and conversion: Batteries, Supercapacitors, Fuel cells, Hydrogen storage, and Photovoltaics and solar cells.
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