Abstract: The invention relates to a method for converting a gas into methane (CH4) which includes: a step of activating a catalytic material including praseodymium oxide (Pr6O11) associated with nickel oxide (NiO) and alumina (Al2O3), the respective proportions of which are, relative to the total mass of these three compounds: Pr6O11: 1 wt % to 20 wt %, NiO: 1 wt % to 20 wt %, and Al2O3: 60 to 98 wt %; and a step of passing a gas including at least one carbon monoxide (CO) over the activated catalytic material.

Abstract: A method is provided for estimating at least one combustion characteristic of a fuel gas belonging to a family of fuel gases, where the at least one characteristic includes at least one of a Wobbe index or a higher heating value. The method includes measuring at least two flow properties of the fuel gas and measuring a dihydrogen content XH2 contained in the fuel gas. The method also includes estimating the at least one characteristic ? GN H ? ? 2 using an empirical affine relationship of ? GN H ? ? 2 = ? + ? · Y + ? · X H 2 . Here, ?, ?, and ? are coefficients predetermined for the family of fuel gases, and Y is a variable representative of physical properties of the fuel gas prepared from the measurements of the at least two flow properties of the fuel gas.

Abstract: The invention relates to a method for converting a gas into methane (CH4) which includes: a step of activating a catalytic material including praseodymium oxide (Pr6O11) associated with nickel oxide (NiO) and alumina (Al2O3), the respective proportions of which are, relative to the total mass of these three compounds: Pr6O11: 1 wt % to 20 wt %, NiO: 1 wt % to 20 wt %, and Al2O3: 60 to 98 wt %; and a step of passing a gas including at least one carbon monoxide (CO) over the activated catalytic material.

Abstract: The invention relates to a method for converting a gas into methane (CH4) which includes: a step of activating a catalytic material including praseodymium oxide (Pr6O11) associated with nickel oxide (NiO) and alumina (Al2O3), the respective proportions of which are, relative to the total mass of these three compounds: Pr6O11: 1 wt % to 20 wt %, NiO: 1 wt % to 20 wt %, and A12O3: 60 to 98 wt %; and a step of passing a gas including at least one carbon monoxide (CO) over the activated catalytic material.

Abstract: The invention relates to a method for converting a gas into methane (CH4) which includes: a step of activating a catalytic material including praseodymium oxide (Pr6O11) associated with nickel oxide (NiO) and alumina (Al2O3), the respective proportions of which are, relative to the total mass of these three compounds: Pr6O11: 1 wt % to 20 wt %, NiO: 1 wt % to 20 wt %, and A12O3: 60 to 98 wt %; and a step of passing a gas including at least one carbon monoxide (CO) over the activated catalytic material.

Abstract: A method is provided for estimating at least one combustion characteristic of a fuel gas belonging to a family of fuel gases, where the at least one characteristic includes at least one of a Wobbe index or a higher heating value. The method includes measuring at least two flow properties of the fuel gas and measuring a dihydrogen content XH2 contained in the fuel gas. The method also includes estimating the at least one characteristic ? GN H ? ? 2 using an empirical affine relationship of ? GN H ? ? 2 = ? + ? · Y + ? · X H 2 . Here, ?, ?, and ? are coefficients predetermined for the family of fuel gases, and Y is a variable representative of physical properties of the fuel gas prepared from the measurements of the at least two flow properties of the fuel gas.

Abstract: A device includes a gasifier to produce a gaseous compound from a biomass. The gasifier includes inlets for the biomass and for an oxidizing agent and an outlet for the gaseous compound including carbon monoxide. A first methanation unit to methanate the carbon monoxide to produce a substitute natural gas exiting the gasifier. The first methanation unit includes at least one inlet for water and an inlet for the gaseous compound coming from the gasifier. A second methanation unit to methanate the carbon dioxide to produce the substitute natural gas. The second methanation unit includes at least one inlet for water and one inlet for the carbon dioxide from the first methanation unit. A dihydrogen producing unit to produce dihydrogen from water and electric current. The dihydrogen producing unit includes an electrical power supply, an inlet for water and an outlet for dihydrogen supplying the second methanation unit.

Abstract: A device includes a gasifier to produce a gaseous compound from a biomass. The gasifier includes inlets for the biomass and for an oxidizing agent and an outlet for the gaseous compound including carbon monoxide. A first methanation unit to methanate the carbon monoxide to produce a substitute natural gas exiting the gasifier. The first methanation unit includes at least one inlet for water and an inlet for the gaseous compound coming from the gasifier. A second methanation unit to methanate the carbon dioxide to produce the substitute natural gas. The second methanation unit includes at least one inlet for water and one inlet for the carbon dioxide from the first methanation unit. A dihydrogen producing unit to produce dihydrogen from water and electric current. The dihydrogen producing unit includes an electrical power supply, an inlet for water and an outlet for dihydrogen supplying the second methanation unit.