1. Beijing Engineering Research Center of Process Pollution Control, Division of Environmental Engineering and Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
2. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
3. State Key Laboratory of Catalytic Materials and Reaction Engineering, Research Institute of Petroleum Processing Sinopec, Beijing 100083, P. R. China