1. State Key Lab of Fine Chemicals School of Chemical Engineering Liaoning Key Lab for Energy Materials and Chemical Engineering Dalian University of Technology Dalian 116024 P. R. China
2. School of Mechanical Engineering Purdue University West Lafayette IN 47907 USA
3. Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park CA 94025 USA
4. School of Materials Science and Engineering Tianjin University Tianjin 300072 P. R. China
5. State Key Laboratory of Chemical Resource Engineering, College of Chemical Engineering Beijing University of Chemical Technology Beijing 100029 P. R. China