Phase Transformation-Tailored In-Plane Sulfur Vacancies in MoS 2 for Enhanced Hydrodeoxygenation Performance

MoS 2 -based catalysts can effectively achieve the hydrodeoxygenation of lipids or fatty acids into biojet fuel, alleviating the energy crisis and environmental problems. Nevertheless, the active sites of MoS 2 are predominantly concentrated at the edges or rims, while the more extensive inert plane is deficient in effective catalytic sites. In this study, based on a phase transformation strategy, sulfur atoms in the inert plane are activated through annealing 1T MoS 2, generating 2H MoS 2 with abundant in-plane sulfur vacancies. Specifically, MoS 2 (U)-400 achieves 100% conversion of palmitic acid and over 99% hexadecane yield at 2 MPa H 2 and 260 °C. This phase transformation-induced active site construction strategy provides a simple and effective catalyst for the hydrodeoxygenation of lipids and fatty acids.