1. Beijing Key Laboratory of Lignocellulosic Chemistry, MOE Engineering Research Center of Forestry Biomass Materials and Energy, Beijing Forestry University, Beijing100083, China
2. China National Pulp and Paper Research Institute, Beijing 100102, China
3. Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China