1. Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua University Beijing 100084 P. R. China
2. Beijing Key Laboratory of Lignocellulosic ChemistryBeijing Forestry University Beijing 100083 P. R. China
3. Advanced Research Institute of Multidisciplinary ScienceBeijing Institute of Technology Beijing 100081 P. R. China
4. Center for Lignocellulose Science and EngineeringDalian Polytechnic University Dalian 116034 P. R. China