1. Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering; Guangxi University; Nanning 530004 P.R. China
2. School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 P.R. China
3. College of Resources and Metallurgy; Guangxi University; Nanning 530004 P.R. China