CATALYTIC MATERIAL BASED ON ALUMINA OXIDE, NICKEL OXIDE AND PRASEODYME OXIDE AND USE THEREOF FOR METHANATION

摘要

The catalytic material comprises praseodymium oxide (Pr6O11) associated with nickel oxide (NiO) and alumina (Al2O3), the respective proportions of which, relative to the total mass of these three compounds: - Pr6O11: 1 to 20% by weight, - NiO: 1 to 20% by weight and - Al2O3: 60 to 98% by weight. Preferably, the nature of the alumina support is mesoporous and of gamma structure. The specific surface SStel of the catalytic material is preferably between 50 and 300 m 2 / g. The use of the catalytic material is for the conversion of carbon monoxide (CO) and / or carbon dioxide (CO2) to methane (CH4), preferably by bringing the catalytic material in the presence of a gaseous mixture containing mainly CO , CO2 and H2, with an H2 content greater than that of CO and CO2, preferably at a temperature below 300 ° C.