CO2 hydrogenation Fischer–Tropsch History of engineering & technology Technology: general issues activated carbon aspen plus basic oxygen furnace gas bifunctional catalyst biomass blast furnace gas catalyst poison and degradation catalytic dewaxing catalytic methanation caustic MgO coke oven gas gas cleaning gasification hydrogen hydroprocessing lubricant production methanation methanol methanol synthesis power-to-gas real gases steelworks steelworks sustainability synthetic natural gas