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Chemical recycling promises to enable lower\u2010energy pathways and minimal environmental impacts compared with traditional incineration and mechanical recycling. Herein, we demonstrated that methanol as a hydrogen supplier assisted the depolymerization of PS (denoted as PS\u2010MAD) into alkylbenzenes over a heterogeneous catalyst composed of Ru nanoparticles on SiO\n                    <jats:sub>2<\/jats:sub>\n                    . PS\u2010MAD achieved a high yield of liquid products which accounted for 93.2\u2005wt\u2009% of virgin PS at 280\u2009\u00b0C for 6\u2005h with the production rate of 118.1\u2005mmol\n                    <jats:sub>carbon<\/jats:sub>\n                    \u2009g\n                    <jats:sub>catal.<\/jats:sub>\n                    <jats:sup>\u22121<\/jats:sup>\n                    \u2009h\n                    <jats:sup>\u22121<\/jats:sup>\n                    . The major components were valuable alkylbenzenes (monocyclic aromatics and diphenyl alkanes), the sum of which occupied 84.3\u2005wt\u2009% of liquid products. According to mechanistic studies, methanol decomposition dominates the hydrogen supply during PS\u2010MAD, thereby restraining PS aromatization which generates by\u2010products of fused polycyclic arenes and polyphenylenes.\n                  <\/jats:p>","DOI":"10.1002\/anie.202404952","type":"journal-article","created":{"date-parts":[[2024,4,8]],"date-time":"2024-04-08T09:26:40Z","timestamp":1712568400000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":40,"title":["Recycling Valuable Alkylbenzenes from Polystyrene through Methanol\u2010Assisted Depolymerization"],"prefix":"10.1002","volume":"63","author":[{"given":"Lin","family":"Zeng","sequence":"first","affiliation":[{"name":"Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes Department of Chemical Physics University of Science and Technology of China  Hefei Anhui 230026 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tao","family":"Yan","sequence":"additional","affiliation":[{"name":"Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes Department of Chemical Physics University of Science and Technology of China  Hefei Anhui 230026 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junjie","family":"Du","sequence":"additional","affiliation":[{"name":"Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes Department of Chemical Physics University of Science and Technology of China  Hefei Anhui 230026 P. R. 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