Energy Materials, Год журнала: 2025, Номер 5(8)

Опубликована: Апрель 21, 2025

Lignin-based guaiacol and its derivatives can be hydrogenated to synthesize 2-methoxycyclohexanols (2-MCHs), widely used in the pharmaceutical industry, while efficient catalytic conversion of guaiacols into 2-MCHs is challenging due interference side reaction CAr-OCH3 bond cleavage. In this work, highly selective hydrogenation various guaiacyl lignin-derived phenols (yields 86%-97%) was realized over a single-atom Ru-based catalyst (Ru1/o -CeO2-ov) that preferentially exposes CeO2(111) plane has abundant oxygen vacancies. Control experiments mechanism studies expounded Ru-O-Ce active site for aromatic ring guaiacols, exposed (111) vacancies ceria reduce activation energy hydrogenation, thereby enabling generate corresponding products with high selectivity. Response surface optimization indicated temperature time have relatively more significant effects on 2-MCH yield. Moreover, Ru1/o -CeO2-ov exhibited excellent reusability, extensively applicable hydrogenative dearomatization different types phenols, providing unique solution upgrading biomass feedstock specific structural chemicals.

Язык: Английский