Selective Hydrogenation of Phenol to Cyclohexanone in Water over Pd@N‐Doped Carbon Derived from Ionic‐Liquid Precursors

Abstract

Abstract In this report, a kind of mesoporous N‐doped carbon (CN‐ x ) derived from N‐containing ionic‐liquid (IL) precursors were synthesized, and Pd@CN‐ x prepared by a simple ultrasound‐assisted method showed higher catalytic activity for the selective hydrogenation of phenol and its derivatives under mild reaction conditions in water than commercial Pd@C and other common Pd heterogeneous catalysts. The catalytic activities of Pd@CN‐ x derived from different ILs were different, and further study into the influencing factors, including physical properties, N species of CN‐ x , and Pd status of Pd@CN‐ x , were performed.