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In the upgrading of lignin\u2010derived\n                    <jats:italic>4<\/jats:italic>\n                    \u2010propylguaiacol, single\u2010atom catalyst (SAC) Pt\/TiO\n                    <jats:sub>2<\/jats:sub>\n                    \u2212H achieved a conversion of 96.9\u2009% and a demethoxylation selectivity of 93.3\u2009% under 3\u2005MPa H\n                    <jats:sub>2<\/jats:sub>\n                    at 250\u2009\u00b0C for 3\u2005h, markedly different from the performance of nanoparticle counterpart that gave deep deoxygenation selectivity over 99.0\u2009%. The high demethoxylation activity of SAC Pt\/TiO\n                    <jats:sub>2<\/jats:sub>\n                    \u2212H is mainly attributed to its weak hydrogen spillover capacity that suppressed the benzene ring hydrogenation and the deep deoxygenation. Additionally, SAC Pt\/TiO\n                    <jats:sub>2<\/jats:sub>\n                    \u2212H reduced the energy barrier of C\n                    <jats:sub>Ar<\/jats:sub>\n                    \u2212OCH\n                    <jats:sub>3<\/jats:sub>\n                    bond cleavage and accordingly lowered the Gibbs free energy of the demethoxylation reaction. This facile method could fabricate single\u2010atom Au, Pd, Ir, and Ru supported on TiO\n                    <jats:sub>2<\/jats:sub>\n                    \u2212H, demonstrating the generality of this strategy for the establishment of a library of SACs. Moreover, SAC exhibited versatile capacity in demethoxylation of different lignin\u2010derived monomers and high stability. This study showcases the superiority of atomically dispersed metal catalysts for selective demethoxylation reactions and proposes a renewable alternative to fossil\u2010based 4\u2010alkylphenols through upgrading of lignin\u2010derived monomers.\n                  <\/jats:p>","DOI":"10.1002\/anie.202404683","type":"journal-article","created":{"date-parts":[[2024,5,21]],"date-time":"2024-05-21T08:55:05Z","timestamp":1716281705000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":41,"title":["Catalytic Refining Lignin\u2010Derived Monomers: Seesaw Effect between Nanoparticle and Single\u2010Atom Pt"],"prefix":"10.1002","volume":"63","author":[{"given":"Weiyan","family":"Wang","sequence":"first","affiliation":[{"name":"School of Chemical Engineering Xiangtan University  Xiangtan, Hunan 411105 P.R. 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