ABSTRACT In confined mesoscopic spaces, the unraveling of a catalytic mechanism with complex mass transfer and adsorption processes such as reactant enrichment is a great challenge. In this study, a hollow nanoarchitecture of MnOx-encapsulated Pt nanoparticles was designed as a nanoreactor to investigate the reactant enrichment in a mesoscopic hollow void. By employing advanced characterization techniques, we found that the reactant-enrichment behavior is derived from directional diffusion of the reactant driven through the local concentration gradient and this increased the amount of reactant. Combining experimental results with density functional theory calculations, the superior cinnamyl alcohol (COL) selectivity originates from the selective adsorption of cinnamaldehyde (CAL) and the rapid formation and desorption of COL in the MnOx shell. The superb performance of 95% CAL conversion and 95% COL selectivity is obtained at only 0.5 MPa H2 and 40 min. Our findings showcase that a rationally designed nanoreactor could boost catalytic performance in chemoselective hydrogenation, which can be of great aid and potential in various application scenarios.
- Reactant enrichment in hollow void of Pt NPs@MnOx nanoreactors for boosting hydrogenation performance
- Yanfu Ma - Dalian Institute of Chemical PhysicsLiwei Wang - Dalian Institute of Chemical PhysicsWantong ZhaoTianyi Liu (Author) - University of Surrey, School of Chemistry and Chemical EngineeringHaitao Li - Dalian Institute of Chemical PhysicsWenhao Luo - Inner Mongolia UniversityQike Jiang - Dalian Institute of Chemical PhysicsWei Liu - Dalian National Laboratory for Clean EnergyQihua Yang - Zhejiang Normal UniversityJun Huang - University of SydneyRiguang Zhang - Taiyuan University of TechnologyJian Liu (Author) - University of Surrey, School of Chemistry and Chemical EngineeringG Q Max Lu (Author) - University of SurreyCan Li - Dalian Institute of Chemical Physics
- National science review
- 20/07/2023
- This work was supported by the National Natural Science Foundation of China (21905271 and 62227815) and the China Postdoctoral Science Foundation (2021M703142). This work was also supported by the Shanghai Science and Technology Committee (19DZ2270100).
- 99812260402346
- © The Author(s) 2023.
- School of Chemistry and Chemical Engineering
- English
- Journal article
- nwad201_Supplemental_File - pdf file