A series of CuBi co-doped mesoporous zeolite Beta (CuxBiy-mBeta) were prepared by a facile one-pot hydrothermal treatment approach and were characterized by XRD, N2 adsorption-desorption, TEM/SEM, XPS, H2-TPR, NH3-TPD and in situ DRIFTS. The catalysts CuxBiy-mBeta were applied to the removal of NOx by selective catalytic reduction with ammonia (NH3-SCR), especially the optimized Cu1Bi1-mBeta ac...

PtIr/TiO2 catalyst was prepared and investigated for the selective catalytic reduction of NOx by H2 (H2-SCR) in presence O2. It found that exhibited higher H2-SCR activity as well wider temperature window than Pt/TiO2 Ir/TiO2 catalysts, optimum mass ratio Pt/Ir 1:1. Characterization showed metallic Pt Ir were generated on PtIr/TiO2, both which favorable active sites process. In situ DRIFTS stud...