An apparatus for setting the ignition property of at least one fuel, configured to reduce the ignition readiness by altering the chemical composition comprising • at least one fuel inlet and at least one oxidant inlet, • at least one dispersion zone for dispersing the fuel by means of at least one dispersion structure for the fuel, • at least one oxidation zone for the at least partial oxidation of the fuel, comprising at least one catalyst support with at least one catalyst, • at least one conversion zone for the catalytic and/or thermal conversion of the fuel and • at least one outlet for fuel having an altered ignition property, wherein the oxidant inlet, the catalyst support and the dispersion zone are arranged and configured in such a way that heat evolved in the oxidation zone can be transferred to a gas or gas mixture flowing into the dispersion zone, wherein the dispersion zone is configured in such way, that liquid fuel can vaporized in the dispersion zone, characterized in that the catalyst support is arranged between the dispersion structure for the fuel and oxidant inlet in such a way, that gas or gas mixture flowing out from the oxidant inlet is conducted onto the dispersion zone in such a way that it is subsequently discharged together with the fuel into the oxidation zone and/or conversion zone, wherein the catalyst support contains an open-pored structure or flow channels, which assist flow of the oxidant through to the dispersion zone. • at least one fuel inlet and at least one oxidant inlet, • at least one dispersion zone for dispersing the fuel by means of at least one dispersion structure for the fuel, • at least one oxidation zone for the at least partial oxidation of the fuel, comprising at least one catalyst support with at least one catalyst, • at least one conversion zone for the catalytic and/or thermal conversion of the fuel and • at least one outlet for fuel having an altered ignition property, wherein the oxidant inlet, the catalyst support and the dispersion zone are arranged and configured in such a way that heat evolved in the oxidation zone can be transferred to a gas or gas mixture flowing into the dispersion zone, wherein the dispersion zone is configured in such way, that liquid fuel can vaporized in the dispersion zone, characterized in that the catalyst support is arranged between the dispersion structure for the fuel and oxidant inlet in such a way, that gas or gas mixture flowing out from the oxidant inlet is conducted onto the dispersion zone in such a way that it is subsequently discharged together with the fuel into the oxidation zone and/or conversion zone, wherein the catalyst support contains an open-pored structure or flow channels, which assist flow of the oxidant through to the dispersion zone. wherein the oxidant inlet, the catalyst support and the dispersion zone are arranged and configured in such a way that heat evolved in the oxidation zone can be transferred to a gas or gas mixture flowing into the dispersion zone, wherein the dispersion zone is configured in such way, that liquid fuel can vaporized in the dispersion zone, characterized in that the catalyst support is arranged between the dispersion structure for the fuel and oxidant inlet in such a way, that gas or gas mixture flowing out from the oxidant inlet is conducted onto the dispersion zone in such a way that it is subsequently discharged together with the fuel into the oxidation zone and/or conversion zone, wherein the catalyst support contains an open-pored structure or flow channels, which assist flow of the oxidant through to the dispersion zone.