Kinetic behaviour of commercial catalysts for methane reforming in ethanol steam reforming process  

作　　者：Jorge Vicente Javier Erea Martin Olazar Pedro L.Benito Javier Bilbao Ana G.Gayubo 

机构地区：[1]Departamento de Ingeniería Química, Universidad del País Vasco UPV/EHU, Apartado 644, 48080 Bilbao, Spain [2]Departamento de Ingeniería Minera y Metalúrgica y Ciencia de los Materiales, Universidad del País Vasco UPV/EHU,Nieves Cano 12, 01006 Vitoria-Gasteiz, Spain

出　　处：《Journal of Energy Chemistry》2014年第5期639-644,共6页能源化学（英文版）

基　　金：supported by financial support of the Ministry of Science and Technology of the Spanish Government(Projects CTQ2009-13428 and CTQ2012-35263);the University of the Basque Country(UFI 11/39);the Basque Government(Project IT748-13)

摘　　要：Ethanol steam reforming has been studied in a fluidized bed （in order to ensure bed isothermicity） on commercial catalysts for methane reforming. The results allow analyzing the effect of temperature （in 300-700℃ range）, and both metal and support nature on the reaction indices （ethanol conversion, yields and selectivities to H2 and byproducts （CO2, CO, CH4 and C2H4O））. Special attention has been paid to catalysts＇ stability by comparing the evolution of the reaction indices with time on stream at 500°C （minimum CO formation） and 700℃ （minimum deactivation by coke deposition）. Although they provide a slightly lower H2 yield, the results evidence a good behaviour of Ni based catalysts, indicating that they are an interesting alternative of more expensive Rh based ones.Ethanol steam reforming has been studied in a fluidized bed （in order to ensure bed isothermicity） on commercial catalysts for methane reforming. The results allow analyzing the effect of temperature （in 300-700℃ range）, and both metal and support nature on the reaction indices （ethanol conversion, yields and selectivities to H2 and byproducts （CO2, CO, CH4 and C2H4O））. Special attention has been paid to catalysts＇ stability by comparing the evolution of the reaction indices with time on stream at 500°C （minimum CO formation） and 700℃ （minimum deactivation by coke deposition）. Although they provide a slightly lower H2 yield, the results evidence a good behaviour of Ni based catalysts, indicating that they are an interesting alternative of more expensive Rh based ones.

关 键 词：ethanol steam reforming hydrogen commercial catalyst SELECTIVITY DEACTIVATION 

分 类 号：O643.36[理学—物理化学]