A gas-generating mixture consists of a nitrogen-rich and low-carbon fuel from the group comprising nitroguanadine (NIGU), triaminoguanidine nitrate (TAGN), diguanidinium-5,5'-azotetrazolate (GZT) and 3-nitro-1,2,3-triazol-5-on (NTO) and copper diammindinitrate Cu(NH<-3 )<-2 (NO<-3 )<-2 as oxidizer and V<-2 O<-5 /MoO<-3 mixing oxides and/or oxide mixtures as catalyst.