Facile synthesis of birnessite-type K2Mn4O8 and cryptomelane-type K2-xMn8O16 catalysts and their excellent catalytic performance for soot combustion with high resistance to H2O and SO2

Di Yu, Yu Ren, Xuehua Yu, Xiaoqiang Fan, Lanyi Wang, Ruidan Wang, Zhen Zhao, Kai Cheng, Yongsheng Chen, Zbigniew Sojka, Andrzej Kotarba, Yuechang Wei, Jian Liu