1. Institute of Applied Chemistry, College of Chemistry; Nanchang University; Nanchang Jiangxi 330031 P.R. China
2. School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
3. State Key Laboratory Cultivation Base of Natural Gas Conversion; Ningxia University; Yinchuan 750021 P.R. China