| Titre : | Hydrogenation of dimethyl oxalate using extruded Cu/SiO2 catalysts : Mechanical strength and catalytic performance (2013) |
| Auteurs : | Li Zhao, Auteur ; Yujun Zhao, Auteur ; Shengping Wang, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 51 N° 43, Octobre 2012) |
| Article en page(s) : | pp. 13935-13943 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | Catalytic reaction Strength Catalyst Hydrogenation |
| Résumé : | In this work, the extrusion process of Cu/SiO2 catalysts prepared by the ammonia-evaporation (AE) method has been investigated and optimized in order to obtain materials with convenient catalytic and mechanical properties for their application in the gas-phase hydrogenation reaction of dimethyl oxalate (DMO) to ethylene glycol (EG). Thereby, a variety of Cu/SiO2 extrudates were prepared with different Cu loading, It has been observed that a special microstructure including defects, flaws, and discontinuities plays a significant role on the mechanical strength. Larger CuO grains may act as fracture origins, which negatively affect the mechanical strength. The 20Cu/SiO2 extrudate with high Cu dispersion and high porosity is optimized for hydrogenation of DMO to EG, achieving a 98% conversion of DMO and 85% selectivity of EG under the liquid hourly space velocity (LHSV) of 1.0 h―1. |
| ISSN : | 0888-5885 |
| En ligne : | http://cat.inist.fr/?aModele=afficheN&cpsidt=26593320 |
