Sorbent, useful for e.g. purification of dry exhaust gas, comprises powdery carbon material that is reduced without addition of further inert components in its reactivity

A sorbent (I), for the purification of dry exhaust gas, comprises a powdery carbon material, which is reduced without the addition of further inert components in its reactivity. An independent claim is included for the preparation of (I), comprising subjecting the carbon (preferably hearth furnace coke) under atmospheric oxygen and subjecting to warm treatment to reduce the reactivity. Die Erfindung betrifft die Verwendung staubförmiger oder pulverförmiger bis körniger kohlenstoffhaltiger Reststoffe aus thermischen Prozessen als Sorbens zur trockenen Abgasreinigung.