Selective hydrogenation of alkenes using ZIF-67 shell membrane deposited on platinum/alumina core catalyst
| Autor: | Lei Zhao, Feng Jiao, Yongming Chai, Hailing Guo, Chenguang Liu, Svetlana Mintova, Liu Junjuan |
|---|---|
| Přispěvatelé: | China University of Petroleum, Laboratoire catalyse et spectrochimie (LCS), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Université de Caen Normandie (UNICAEN), Normandie Université (NU), Laboratoire Traitement et Communication de l'Information (LTCI), Institut Mines-Télécom [Paris] (IMT)-Télécom Paris |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Inorganic chemistry Cyclohexene chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 7. Clean energy 01 natural sciences Catalysis chemistry.chemical_compound Cyclooctene General Materials Science [CHIM.ORGA]Chemical Sciences/Organic chemistry [CHIM.CATA]Chemical Sciences/Catalysis General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Selective hydrogenation 0104 chemical sciences Core-shell catalyst Membrane chemistry Sulfur-tolerant material Mechanics of Materials Hexene engineering Noble metal 0210 nano-technology Selectivity Platinum |
| Zdroj: | Microporous and Mesoporous Materials Microporous and Mesoporous Materials, Elsevier, 2019, 276, pp.98-106. ⟨10.1016/j.micromeso.2018.09.026⟩ |
| ISSN: | 1387-1811 |
| Popis: | International audience; A new core–shell catalyst (Pt/Al2O3@ZIF-67) for selective hydrogenation of alkenes was prepared by coating platinum/alumina (Pt/Al2O3) core with ZIF-67 shell membrane. The aperture size of the ZIF-67 (0.34 nm) is sufficiently small thus exclude large reactant and toxic substances thereby preventing deactivation and leakage of noble metal (Pt) incorporated in the core. The Pt/Al2O3@ZIF-67 core−shell catalyst exhibited exceptional size-selective catalytic properties in hydrogenation reaction. The core-shell catalyst is selective toward alkenes (hexene 0.17 nm, cyclohexene 0.42 nm, cyclooctene 0.55 nm), and showed excellent resistance to sulfur poisoning. The Pt/Al2O3@ZIF-67 core−shell catalyst displayed outstanding stability and maintain high activity and selectivity after four subsequent working cycles. The conversion of hexene reached 100% at 200 °C, while the conversion of cyclohexene and cyclooctene was 40% and 10%, respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect