Nano ZnO was adopted to modify nano TiO2.TiO2/ZnO composite powder with the mole ratio of 9:1 is prepared with direct mi......

通过改变水蒸气分压来改变沸石的脱铝深度，提高催化剂的活性稳定性；采用稀土离子改性抑制副反应的发生；综合水蒸气处理、离子改性改善......