1. Research Center of Green Catalysis College of Chemistry Zhengzhou University 100 Science Road Zhengzhou 450001 P. R. China
2. Institute of Chemical Industry of Forest Products CAF National Engineering Lab for Biomass Chemical Utilization Nanjing 210042 P. R. China
3. College of Science Henan Agricultural University Zhengzhou 450002 P.R. China
4. Department of Chemistry The Women University Kutchery Campus, L.M.Q. Road Multan 66000 Pakistan