{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T05:17:24Z","timestamp":1784783844653,"version":"3.55.0"},"reference-count":23,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2023,5,10]],"date-time":"2023-05-10T00:00:00Z","timestamp":1683676800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006769","name":"Russian Science Foundation","doi-asserted-by":"publisher","award":["22-79-00255"],"award-info":[{"award-number":["22-79-00255"]}],"id":[{"id":"10.13039\/501100006769","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>The annual production of plastic waste is a serious ecological problem as it causes substantial pollution of the environment. Polyethylene terephthalate, a material usually found in disposable plastic bottles, is one of the most popular material used for packaging in the world. In this paper, it is proposed to recycle polyethylene terephthalate waste bottles into benzene-toluene-xylene fraction using a heterogeneous nickel phosphide catalyst formed in situ during the polyethylene terephthalate recycling process. The catalyst obtained was characterized using powder X-ray diffraction, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy techniques. The catalyst was shown to contain a Ni2P phase. Its activity was studied in a temperature range of 250\u2013400 \u00b0C and a H2 pressure range of 5\u20139 MPa. The highest selectivity for benzene-toluene-xylene fraction was 93% at quantitative conversion.<\/jats:p>","DOI":"10.3390\/polym15102248","type":"journal-article","created":{"date-parts":[[2023,5,10]],"date-time":"2023-05-10T01:40:02Z","timestamp":1683682802000},"page":"2248","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["PET Waste Recycling into BTX Fraction Using In Situ Obtained Nickel Phosphide"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3741-7833","authenticated-orcid":false,"given":"Maria","family":"Golubeva","sequence":"first","affiliation":[{"name":"A.V.Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences (TIPS RAS), Moscow 119991, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariyam","family":"Mukhtarova","sequence":"additional","affiliation":[{"name":"A.V.Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences (TIPS RAS), Moscow 119991, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3574-0039","authenticated-orcid":false,"given":"Alexey","family":"Sadovnikov","sequence":"additional","affiliation":[{"name":"A.V.Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences (TIPS RAS), Moscow 119991, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9297-4950","authenticated-orcid":false,"given":"Anton","family":"Maximov","sequence":"additional","affiliation":[{"name":"A.V.Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences (TIPS RAS), Moscow 119991, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,10]]},"reference":[{"key":"ref_1","unstructured":"Ritchie, H., and Roser, M. (2023, May 08). Plastic Pollution. Our World Data. Available online: https:\/\/ourworldindata.org\/plastic-pollution."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"865","DOI":"10.1016\/j.resconrec.2011.04.009","article-title":"Twenty years of PET bottle to bottle recycling\u2014An overview","volume":"55","author":"Welle","year":"2011","journal-title":"Resour. Conserv. Recycl."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"106867","DOI":"10.1016\/j.jece.2021.106867","article-title":"From plastic waste to wealth using chemical recycling: A review","volume":"10","author":"Jiang","year":"2022","journal-title":"J. Environ. Chem. Eng."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"813","DOI":"10.1016\/j.chempr.2016.11.003","article-title":"Catalyst: Design challenges for the future of plastics recycling","volume":"1","year":"2016","journal-title":"Chem"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"600","DOI":"10.1134\/S1019331622050136","article-title":"Disposable polymer packaging: A problem without a solution?","volume":"92","author":"Yaroslavov","year":"2022","journal-title":"Her. Russ. Acad. Sci."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1347","DOI":"10.1002\/pol.20190261","article-title":"Advances and approaches for chemical recycling of plastic waste","volume":"58","author":"Thiounn","year":"2020","journal-title":"J. Polym. Sci."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"7421","DOI":"10.1021\/cr300298j","article-title":"p-Xylene oxidation to terephthalic acid: A literature review oriented toward process optimization and development","volume":"113","author":"Bordado","year":"2013","journal-title":"Chem. Rev."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"e202200522","DOI":"10.1002\/cssc.202200522","article-title":"Upcycling plastic wastes into value-added products by heterogeneous catalysis","volume":"15","author":"Tan","year":"2022","journal-title":"ChemSusChem"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"5527","DOI":"10.1002\/anie.202011063","article-title":"Towards the circular economy: Converting aromatic plastic waste back to arenes over a Ru\/Nb2O5 catalyst","volume":"60","author":"Jing","year":"2021","journal-title":"Angew. Chem. Int. Ed."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"4242","DOI":"10.1002\/cssc.202100196","article-title":"H2-free plastic conversion: Converting PET back to BTX by unlocking hidden hydrogen","volume":"14","author":"Lu","year":"2021","journal-title":"ChemSusChem"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"2709","DOI":"10.1039\/C9GC00571D","article-title":"Synthesis of gasoline and jet fuel range cycloalkanes and aromatics from poly(ethylene terephthalate) waste","volume":"21","author":"Tang","year":"2019","journal-title":"Green Chem."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"4330","DOI":"10.1002\/cssc.202100956","article-title":"Recovery of arenes from polyethylene terephthalate (PET) over a Co\/TiO2 Catalyst","volume":"14","author":"Hongkailers","year":"2021","journal-title":"ChemSusChem"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1109","DOI":"10.1134\/S0965544120100047","article-title":"Transition metal phosphides (Ni, Co, Mo, W) for hydrodeoxygenation of biorefinery products (a review)","volume":"60","author":"Golubeva","year":"2020","journal-title":"Pet. Chem."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"117890","DOI":"10.1016\/j.apcata.2020.117890","article-title":"Hydroprocessing of furfural over in situ generated nickel phosphide based catalysts in different solvents","volume":"608","author":"Golubeva","year":"2020","journal-title":"Appl. Catal. A"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"550","DOI":"10.1016\/j.mencom.2019.09.024","article-title":"Catalytic system based on nickel(II) acetate and hypophosphorous acid for the selective hydrodeoxygenation of guaiacol","volume":"29","author":"Golubeva","year":"2019","journal-title":"Mendeleev Commun."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"670","DOI":"10.1134\/S0965544121040022","article-title":"In situ generated nickel phosphide based catalysts for hydroprocessing of levulinic acid","volume":"61","author":"Golubeva","year":"2021","journal-title":"Pet. Chem."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.jcat.2009.02.008","article-title":"Alternative synthesis of bulk and supported nickel phosphide from the thermal decomposition of hypophosphites","volume":"263","author":"Guan","year":"2009","journal-title":"J. Catal."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"2113","DOI":"10.1021\/cm970175g","article-title":"Convenient route for the synthesis of transition-metal pnictides by direct reduction of phosphate, arsenate, and antimonate precursors","volume":"9","author":"Gopalakrishnan","year":"1997","journal-title":"Chem. Mater."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"165","DOI":"10.1016\/S0039-9140(96)02026-7","article-title":"Spectrophotometric and inductively coupled plasma atomic emission spectrometric determination of titanium in ilmenites after rapid dissolution with phosphoric acid","volume":"44","author":"Nunes","year":"1997","journal-title":"Talanta"},{"key":"ref_20","unstructured":"Naumkin, A.V., Kraut-Vass, A., Gaarenstroom, S.W., and Powell, C.J. (2023, May 08). NIST X-ray Photoelectron Spectroscopy Database, Version 4.1, National Institute of Standards and Technology, Gaithersburg MD, Available online: https:\/\/srdata.nist.gov\/xps\/."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1007\/s10924-008-0106-7","article-title":"PET waste management by chemical recycling: A review","volume":"18","author":"Sinha","year":"2010","journal-title":"J. Polym. Environ."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"4732","DOI":"10.1002\/chem.201203110","article-title":"Manipulating catalytic pathways: Deoxygenation of palmitic acid on multifunctional catalysts","volume":"19","author":"Peng","year":"2013","journal-title":"Chem. Eur. J."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1016\/j.cattod.2019.03.028","article-title":"The effect of metal loading over Ni\/\u03b3-Al2O3 and Mo\/\u03b3-Al2O3 catalysts on reaction routes of hydrodeoxygenation of rubber seed oil for green diesel production","volume":"355","author":"Ameen","year":"2020","journal-title":"Catal. 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