Züttel, AndreasGallandat, Noris2019-12-052019-12-052019-12-052019https://infoscience.epfl.ch/handle/20.500.14299/163656The present relates to a chemical reactor comprising a catalyst bed enclosed in a reactor vessel and at least one cooling tube placed in the reactor vessel and passing through the catalyst bed, characterized in that the cooling tubes are disposed within the reactor so as to generate thermal gradients of at least 20°C/cm thereby generating hot spots throughout the reactor upon carrying out a reaction. The invention further relates to a methanation process.patentUS2021046441EP3749443EP3632530WO201915498265279571