Homsi Doris, Rached Jihane Abou, Aouad Samer, Gennequin Cédric, Dahdah Eliane, Estephane Jane, Tidahy Haingomalala Lucette, Aboukaïs Antoine, Abi-Aad Edmond
Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV, E.A. 4492), MREI, Université du Littoral-Côte d'Opale, 145 Avenue Schumann, 59140, Dunkerque, France.
Department of Chemistry, University of Balamand, P.O. Box 100, Tripoli, Lebanon.
Environ Sci Pollut Res Int. 2017 Apr;24(11):9907-9913. doi: 10.1007/s11356-016-7480-9. Epub 2016 Aug 23.
The performances of different 5Cu/CoMgAl (x = 0; 2; 4; 6) catalysts prepared by the wet impregnation method were investigated in the ethanol steam-reforming reaction (ESR) at 450 °C during 4 h under a steam/ethanol ratio of 3 (S/E = 3). The best catalyst among the prepared solids was 5Cu/CoAl as it showed a complete ethanol conversion and the highest hydrogen and carbon dioxide productivities. However, following 50 h of aging, the catalyst deactivated due to the formation of a high amount of carbonaceous products detected by differential scanning calorimetry/thermogravimetry. On the other hand, the 5Cu/CoMgAl catalyst showed a much lower quantity of coke deposition with no deactivation due to the basic character conferred by the magnesium oxide phase.
通过湿浸渍法制备的不同5Cu/CoMgAl（x = 0；2；4；6）催化剂在450℃、蒸汽/乙醇比为3（S/E = 3）的条件下进行了4小时的乙醇蒸汽重整反应（ESR）性能研究。所制备的固体催化剂中，最佳催化剂是5Cu/CoAl，因为它实现了乙醇的完全转化以及最高的氢气和二氧化碳产率。然而，经过50小时的老化后，通过差示扫描量热法/热重分析法检测发现，由于形成了大量含碳产物，该催化剂失活。另一方面，5Cu/CoMgAl催化剂由于氧化镁相赋予的碱性，焦炭沉积量低得多且未失活。
