1. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
2. Ganzhou Branch of Jiangxi Tobacco Corporation, Ganzhou 341000, P. R. China
3. Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P. R. China