Abstract:
A Ni-based steam reforming catalyst having excellent carbon deposition resistance and sintering resistance is provided. The steam reforming catalyst is constituted by including nickel as a catalytically active metal, lanthanum as a first co-catalyst component, manganese as a second co-catalyst component, and a carrier containing γ-alumina as a main component.
Abstract:
Provided is a facilitated CO2 transport membrane having an improved CO2 permeance and an improved CO2/H2 selectivity. The facilitated CO2 transport membrane includes a separation-functional membrane that includes a hydrophilic polymer gel membrane containing a CO2 carrier and a CO2 hydration catalyst. Further preferably, the CO2 hydration catalyst at least has catalytic activity at a temperature of 100° C. or higher, has a melting point of 200° C. or higher, or is soluble in water.
Abstract:
A power generation system comprises a fuel gas supply device 13 for controlling methane concentration or carbon dioxide concentration in a mixed gas MG containing methane and carbon dioxide within a setting range for the concentration in the fuel gas of a gas engine 11, and for supplying the mixed gas MG to the gas engine 11 as the fuel gas, and a gas concentration sensor 14 for measuring the carbon dioxide concentration or the methane concentration of the mixed gas MG. The fuel gas supply device 13 comprises a carbon dioxide removal device 16 for removing carbon dioxide in the mixed gas MG, and an operating condition control device 17 for controlling an operating condition that affects an increase or decrease of a carbon dioxide removal rate of the carbon dioxide removal device 16, and the operating condition control device 17 controls the operating condition of the carbon dioxide removal device 16 based on the measurement result of the gas concentration sensor 14, thereby controlling the concentration of methane and carbon dioxide in the mixed gas.
Abstract:
Provided is a facilitated CO2 transport membrane having improved CO2 permeance and improved CO2 selective permeability. The facilitated CO2 transport membrane includes a separation-functional membrane comprising a hydrophilic polymer gel membrane which contains a CO2 carrier and a CO2 hydration catalyst, wherein the hydrophilic polymer is a copolymer including a first structural unit derived from an acrylic acid cesium salt or an acrylic acid rubidium salt and a second structural unit derived from vinyl alcohol. More preferably, the CO2 hydration catalyst has catalytic activity at a temperature of 100° C. or higher.
Abstract:
Provided is a facilitated CO2 transport membrane having an improved CO2 permeance and an improved CO2/H2 selectivity. The facilitated CO2 transport membrane includes a separation-functional membrane that includes a hydrophilic polymer gel membrane containing a CO2 carrier and a CO2 hydration catalyst. Further preferably, the CO2 hydration catalyst at least has catalytic activity at a temperature of 100° C. or higher, has a melting point of 200° C. or higher, or is soluble in water.
Abstract:
Provided is a method for removing CO2 comprising: supplying a gas to be processed containing CO2, N2 and O2 to a feed side of a CO2/O2 selective permeation membrane within a temperature range of 15° C. to 50° C.; generating water vapor and supplying the water vapor to the CO2/O2 selective permeation membrane; selectively removing CO2 from the gas to be processed by permeating CO2 in the gas to be processed from the feed side to a permeate side of the CO2 selective permeation membrane selectively to O2 and N2 in the gas to be processed; and using a CO2 facilitated transport membrane having CO2/O2 selectivity and CO2/N2 selectivity within the temperature range as the CO2 selective permeation membrane, the CO2 facilitated transport membrane being configured with a hydrophilic polymer containing an amino acid and a deprotonating agent for preventing protonation of an amino group of the amino acid supported by a porous membrane, wherein a CO2 concentration in the gas to be processed is 3 mol % or less on a dry basis.
Abstract:
Provided is a facilitated CO2 transport membrane having an improved CO2 permeance and an improved CO2/H2 selectivity. The facilitated CO2 transport membrane includes a separation-functional membrane that includes a hydrophilic polymer gel membrane containing a CO2 carrier and a CO2 hydration catalyst. Further preferably, the CO2 hydration catalyst at least has catalytic activity at a temperature of 100° C. or higher, has a melting point of 200° C. or higher, or is soluble in water.
Abstract:
Provided is a facilitated CO2 transport membrane having improved CO2 permeance and improved CO2 selective permeability. The facilitated CO2 transport membrane includes a separation-functional membrane comprising a hydrophilic polymer gel membrane which contains a CO2 carrier and a CO2 hydration catalyst, wherein the hydrophilic polymer is a copolymer including a first structural unit derived from an acrylic acid cesium salt or an acrylic acid rubidium salt and a second structural unit derived from vinyl alcohol. More preferably, the CO2 hydration catalyst has catalytic activity at a temperature of 100° C. or higher.
Abstract:
Provided is a facilitated CO2 transport membrane having an improved CO2 permeance and an improved CO2/H2 selectivity. The facilitated CO2 transport membrane includes a separation-functional membrane that includes a hydrophilic polymer gel membrane containing a CO2 carrier and a CO2 hydration catalyst. Further preferably, the CO2 hydration catalyst at least has catalytic activity at a temperature of 100° C. or higher, has a melting point of 200° C. or higher, or is soluble in water.